A. Kyle swam 4 laps in the pool on Monday. He swam 6 times as many laps on Tuesday.
a. The expression 6 x 4 represents the number of laps Kyle swam on Tuesday.
b. The words "6 times as many as 4" represent the number of laps Kyle swam on Tuesday.
c. The number of laps Kyle swam on Tuesday can be found by solving the equation x = 6 x 4.
d. Kyle swam 10 laps on Tuesday.
a) True. Since Kyle swam 6 times as many laps on Tuesday as he did on Monday (4 laps), you would multiply 6 by 4 to find the number of laps he swam on Tuesday.
b) True. This phrase means that Kyle swam 6 times the number of laps he swam on Monday (4 laps), which gives you the number of laps he swam on Tuesday.
c) True. This equation represents the total number of laps Kyle swam on Tuesday. By solving the equation, you can determine that Kyle swam 24 laps on Tuesday.
d) False. Based on the information given and the calculations made, Kyle actually swam 24 laps on Tuesday, not 10.
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The temperature at a point (x, y, z) is given byT(x, y, z) = 10e¯2x² − y² − 3z².In which direction does the temperature increase fastest at the point (1, 3, 1)?Express your answer as a UNIT vector.
The direction of fastest increase in temperature at the point (1, 3, 1) is given by the unit vector (-5/sqrt(10) , -3/sqrt(10) , -9/sqrt(10)).
To find the direction of fastest increase in temperature at the point (1, 3, 1), we need to find the gradient of the temperature function T(x, y, z) at that point.
The gradient of a function is a vector that points in the direction of steepest increase, and its magnitude is the rate of change in that direction. So, we can find the gradient vector ∇T(x, y, z) as follows:
∇T(x, y, z) = ( ∂T/∂x , ∂T/∂y , ∂T/∂z )
=[tex]( -20xe^(-2x^2-y^2-3z^2) , -2ye^(-2x^2-y^2-3z^2) , -6ze^(-2x^2-y^2-3z^2) )[/tex]
Therefore, at the point (1, 3, 1), the gradient of T(x, y, z) is:
∇T(1, 3, 1) = [tex]( -20e^(-8) , -6e^(-8) , -18e^(-8) )[/tex]
To find the direction of fastest increase, we need to normalize this vector to a unit vector. The magnitude of the gradient vector is:
|∇T(1, 3, 1)| = sqrt( (-[tex]20e^(-8))^2 + (-6e^(-8))^2 + (-18e^(-8))^2 )[/tex]
= sqrt( 640e^(-16) )
= 8e^(-8) sqrt(10)
So, the unit vector in the direction of fastest increase is:
( -20e^(-8) / (8e^(-8) sqrt(10)) , -6e^(-8) / (8e^(-8) sqrt(10)) , -18e^(-8) / (8e^(-8) sqrt(10)) )
= ( -5/sqrt(10) , -3/sqrt(10) , -9/sqrt(10) )
Therefore, the direction of fastest increase in temperature at the point (1, 3, 1) is given by the unit vector (-5/sqrt(10) , -3/sqrt(10) , -9/sqrt(10)).
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A tank in the shape of a hemisphere has a diameter of 8 feet. If the liquid that fills the tank has a density of 86 pounds per cubic foot, what is the total weight of the liquid in the tank, to the nearest full pound?
Answer:
209.07 pounds
Step-by-step explanation:
radius= 8÷2=4 feet
volume of hemisphere=((4/3)×(22/7)×r^3)/2
=134.09 cubic feet
Mass=density × volume
=86×134.09
=209.07 pounds
A right square pyramid is shown. A plane intersects the pyramid through the apex and is perpendicular to the base.
Answer:
Trapezoid.
Step-by-step explanation:
What is 3x-(2x+9) + 4x?
Please help^^
Answer:
5x-9
Step-by-step explanation:
Distribute: 3x-(2x+9) + 4x
3x - 2x - 9 + 4x
Combine Like Terms: 3x - 2x - 9 + 4x
5x-9
Aleks and Melanie used a protractor to measure the angle below. Aleks thinks the angle measures 50° but Melanie says it is actually 130°. Their teacher confirms that Melanie has the correct answer. What mistake did Aleks make while measuring the angle?
The mistake, Aleks made, while measuring the angle is, he measure the angle from the wrong side of the line.
Angle is a dimensionless vector quantity, that is, it is very important, to take care of the directions, while measuring the angle.
That is, to measure the angle, say ∠ABC, the 0°(reference) line of the protractor, must be on one either AB or BC, to measure the angle rightly.
And since the angles between two lines are supplementary in nature, that is, the two angles will add up to make 180°, that is why, the angle measure by Alek and Melanie, add up to make 180°.
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Dixon made a $2,000 down payment on an $8,000 car. The down
payment was what percent of the price?
Answer:
25%
Step-by-step explanation:
one 4th of 8,000 is 2,000 convert it to a percent and there you go!
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In the coordinate plane, the point X(1,4) is translated to the point X(0,6) . Under the same translation, the points Y(-1,2) and Z(-3,1) are translated to Y and Z , respectively. What are the coordinates of Y and Z ?
Help!!!!!! URGENT
Thus, the coordinates of Y and Z after the translation is obtained as :
Y'(-2,4) and Z'(-4, 3).
Define about the translation:A figure is translated when it is moved from one point to another without changing in size, form, or rotation.
A figure can be translated to move it up, down, left, or right while maintaining the same size. This is carried out using a coordinate system in order to be done properly and accurately.The pre-image is the original object that needs to be translated, and the image is the translated object.Given translation:
Point X(1,4) ---> point X'(0,6)
There is 1 unit shift to left as 1 is subtracted to x coordinate to get 0.
There is 2 unit shift to upward as 2 is added to y coordinate to get 6..
Translation:
(x,y) --->(x - 1, y + 2)
Applying same on points Y and Z,
Y(-1,2) --> Y'(-2,4)
Z(-3,1) --> Z'(-4, 3)
Thus, the coordinates of Y and Z after the translation is obtained as :
Y'(-2,4) and Z'(-4, 3).
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KAP
1 IN PU
1. Luis parents give him x dollars for his monthly allowance. Each month, he must
pay $35 for his cell phone. One-sixth of the remaining money can be spent on
entertainment. Which function can be used to find the amount in dollars Luis can
spend on entertainment?
A f(x) =*735
B. F(x) = 35x - 3
C. F(x) = 35 - $
D. F(x) = § - 35
The function can be used to find the amount in dollars Luis can spend on entertainment is 1/6(x-35)
Total amount of money luis get from his parent = x dollars
The amount luis has to pay to his parents for his cell phone is $35
After giving money for cell phone the amount of money left with luis will be x - 35
so, remaining money with luis = x - 35
One sixth of the remaining money which can be spent on entertainment by luis is 1/6(x-35)
The function can be written in the form of
f(x) = 1/6(x-35)
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An airplane is circling an airport at a height of 500m. the angle of depression of the control tower of the aiport is 15 degrees. what is the distance between the airplane and the tower
The distance between the airplane and the tower is approximately 1864.5 meters.
To solve this problem, we can use trigonometry. Let's draw a diagram to help us visualize the situation:
```
T
/|
/ |
/ | 500m
/a |
--------
x
```
In this diagram, "T" represents the control tower, "a" represents the airplane, and "x" represents the distance between them. We know that the height of the airplane is 500m, and the angle of depression from the tower to the airplane is 15 degrees. This means that the angle between the horizontal ground and the line from the tower to the airplane is also 15 degrees.
Using trigonometry, we can set up the following equation:
```
tan 15 = 500 / x
```
We can solve for "x" by multiplying both sides by "x" and then dividing by tan 15:
```
x = 500 / tan 15
```
Using a calculator, we can find that tan 15 is approximately 0.2679. Therefore:
```
x = 500 / 0.2679
x ≈ 1864.5m
```
So the distance between the airplane and the tower is approximately 1864.5 meters.
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Find the distance from the plane 6x + 5y + z = 54 to the plane 6x + 5y + z = 48. The distance is d= (Type an exact answer, using radicals as needed.)
The exact distance between the planes, using radicals as needed, is d = 6√62 / 62.
To find the distance d between the two planes 6x + 5y + z = 54 and 6x + 5y + z = 48, we can use the formula for the distance between parallel planes:
d = |C1 - C2| / √(A^2 + B^2 + C^2)
where A, B, and C are the coefficients of the x, y, and z terms respectively, and C1 and C2 are the constants in the two equations.
In this case, A = 6, B = 5, C = 1, C1 = 54, and C2 = 48. Plugging these values into the formula, we get:
d = |54 - 48| / √(6^2 + 5^2 + 1^2)
d = 6 / √(36 + 25 + 1)
d = 6 / √62
So the distance between the two planes is d = 6/√62. You can simplify this expression by rationalizing the denominator:
d = (6/√62) * (√62/√62)
d = 6√62 / 62
Thus, the exact distance between the planes, using radicals as needed, is d = 6√62 / 62.
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Flo ate
3
2
of a sandwich and Arnie ate- of a sandwich. If Arnie ate more, what
3
must be true?
A Flo's sandwich is bigger.
B Arnie's sandwich is bigger.
C) The sandwiches are the same size.
D) It doesn't matter which sandwich is bigger.
Flo ate more of the sandwich than Arnie.
Option A is the correct answer.
We have,
We need to compare the values 3/4 and 2/3 to determine which fraction represents a larger amount of sandwiches eaten.
To make the fractions comparable, we need to find a common denominator.
The least common multiple of 4 and 3 is 12.
So we can rewrite 3/4 and 2/3 with 12 as the denominator:
3/4 = 9/12
2/3 = 8/12
Comparing these fractions, we see that 9/12 (or 3/4) is greater than 8/12
(or 2/3).
Therefore,
Flo ate more of the sandwich than Arnie.
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A student usally saves $20 a month. He would like to reach a goal of saving $350 in 12 months the students writes the equation 350=12(x + 20) to represent this situation
Answer: x=55/6 or 55 over 6
Step-by-step explanation: Step 1: Distribute:
- 350= 12(x+20)
- 350= 12x + 240
Step 2: Subtract 240 from both sides:
- 350-240= 12x+240-240
Step 3: Simplify:
Subtract the numbers: 350-240= 12x+240-240= 110=12x+240-240
Subtract again: 110=12x+240-240= 110=12x
Step 4: Divide both sides by the same factor:
110=12x= 110/12= 12x/12
Step 5: Simplify:
- Divide the numbers: 110/12=12x/12= x=55/6=12x/12
- Cancel terms that are in both the numerator and denominator: 55/6=12x/12= 55/6=x
- Move the variables to the left: 55/6=x = x=55/6
Answer: x=55/6 or 55 over 6
A magic square is shown below. Every row, column and long diagonal adds to the same total. Each number can only be used once. Copy the magic square into your book and complete it using the numbers provided. 2 Numbers to use 3 -1 0 3 X 2 4 Magic square -3 2 1 -4 -2
Answer:
Here is the complete magic square:
-3 4 -1
2 0 -2
1 -4 3
Every row, column, and long diagonal adds to 0.
Two scout patrols start hiking in opposite directions. Each patrol hikes 5 kilometers. Then the scouts turn 90 degrees to their right and hike another 6 kilometers. How many kilometers are there between the two scout patrols?
The distance between the two scout patrols is approximately 11.66 kilometers.
We can see that the situation forms a right triangle with the hypotenuse representing the distance between the two scout patrols. Let's call this distance d.
Each patrol initially hikes 5 kilometers in opposite directions. This means that the distance between them at this point is 10 kilometers (5 km + 5 km).
Then, each patrol turns 90 degrees to their right and hikes 6 kilometers. This means that they travel along the legs of the right triangle, which have a length of 6 kilometers.
Using the Pythagorean theorem, we can solve for the hypotenuse:
d² = 10² + 6²
d² = 136
d ≈ 11.66 km
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Shandra has $760 to spend at a bicycle store for some new gear and biking outfits. Assume all prices listed include tax. ⢠She buys a new bicycle for $433. 54. ⢠She buys 2 bicycle reflectors for $18. 41 each and a pair of bike gloves for $10. 76. ⢠She plans to spend some or all of the money she has left to buy new biking outfits for $66. 40 each. Write and solve an inequality which can be used to determine o, the number of outfits Shandra can purchase while staying within her budget. â
We can use an inequality to determine the number of biking outfits Shandra can purchase while staying within her budget.
Let o represent the number of outfits she can purchase. Here are the given terms and costs:
- Initial budget: $760
- Bicycle cost: $433.54
- 2 reflectors cost: 2 * $18.41 = $36.82
- Bike gloves cost: $10.76
- Outfit cost: $66.40 each
Now, we can set up the inequality:
760 >= 433.54 + 36.82 + 10.76 + 66.40 * o
First, combine the constants:
760 >= 481.12 + 66.40 * o
Now, subtract 481.12 from both sides:
278.88 >= 66.40 * o
Finally, divide both sides by 66.40:
o <= 4.2
Since Shandra can only purchase whole outfits, the maximum number of outfits she can buy is 4. So the inequality representing this situation is o <= 4.
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According the April 12, 2017 Pew Research survey, 58% of Americans approve of U. S. Missile strikes in
Syria in response to reports of the use of chemical weapons by Bashar al-Assad's government (the
Syrian government). A sample of 50 Americans are surveyed. Let o be the sample proportion of
Americans who approve the U. S. Missile strikes.
1. What is the population proportion?
(decimal form)
2. What is the sample size?
3. Can the normal approximation be used with this distribution?
4. What is the mean of the sampling proportion?
Answer:
The population proportion is given as 58% or 0.58 in decimal form.
The sample size is given as 50 Americans.
Yes, the normal approximation can be used with this distribution because the sample size is sufficiently large (n=50) and the underlying population is assumed to be large enough to satisfy the independence requirement.
The mean of the sampling proportion (o) can be calculated using the formula:
mean = population proportion = 0.58
Therefore, the mean of the sampling proportion is 0.58 or 58%.
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Hallar la altura de una asta bandera, si un estudiante la observa desde un punto a, con un ángulo de 30° y entre el estudiante y la asta hay una distancia de 10m.
Answer:
The height of the flagpole is approximately 5.774 meters.
Step-by-step explanation:
Let's call the height of the flagpole h. We can use trigonometry to set up the following equation:
tan(30°) = h/10
Simplifying this equation, we get:
h = 10 tan(30°)
Using a calculator, we find that tan(30°) ≈ 0.5774, so:
h ≈ 5.774 meters
Therefore, the height of the flagpole is approximately 5.774 meters.
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Calculate d²y/d²x y= -5x2 + x d²y/d²x= Calculate d²y/dx² y= 7/x d²y/dx²=
To calculate the second derivative of a function, we need to take the derivative of the first derivative. The second derivative gives us information about the curvature of the function. A positive second derivative indicates that the function is concave up, while a negative second derivative indicates that the function is concave down. A second derivative of zero indicates that the function has no curvature at that point.
In the first example given, y = -5x^2 + x, we first find the first derivative by taking the derivative of the function with respect to x. This gives us dy/dx = -10x + 1. To find the second derivative, we take the derivative of dy/dx with respect to x. This gives us d²y/d²x = -10. This indicates that the function has a constant negative curvature, meaning it is concave down everywhere.
In the second example given, y = 7/x, we first find the first derivative by taking the derivative of the function with respect to x. This gives us dy/dx = -7/x^2. To find the second derivative, we take the derivative of dy/dx with respect to x. This gives us d²y/dx² = 14/x^3. This indicates that the function is concave up for positive values of x and concave down for negative values of x. The second derivative is undefined at x = 0, indicating a point of inflection.
Overall, the second derivative gives us important information about the behavior of a function and can help us identify points of inflection and concavity.
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3. What is the largest number that divides 626, 3127 and 15628 and leaves remainders of 1, 2 and 3 respectively?
Answer:
Step-by-step explanation:
625
16. Justin is joining a gym. The gym is currently offering a discount on the fee to join and on the monthly rate.
The discounted price,in dollars,the gym charges can be represented by the equation y=10x+5
a. What are the slope and the Y-intercept of the equation? What do the slope and the Y-intercept each represent in this equation?
Answer:
The equation y = 10x + 5 is in slope-intercept form, y = mx + b, where m is the slope and b is the y-intercept.
The equation y = 10x + 5 is in slope-intercept form, y = mx + b, where m is the slope and b is the y-intercept.Slope (m) = 10
The equation y = 10x + 5 is in slope-intercept form, y = mx + b, where m is the slope and b is the y-intercept.Slope (m) = 10Y-intercept (b) = 5
The equation y = 10x + 5 is in slope-intercept form, y = mx + b, where m is the slope and b is the y-intercept.Slope (m) = 10Y-intercept (b) = 5The slope represents the rate of change of the monthly rate with respect to the fee to join. For every increase of $1 in the fee to join, the monthly rate increases by $10.
The equation y = 10x + 5 is in slope-intercept form, y = mx + b, where m is the slope and b is the y-intercept.Slope (m) = 10Y-intercept (b) = 5The slope represents the rate of change of the monthly rate with respect to the fee to join. For every increase of $1 in the fee to join, the monthly rate increases by $10.The y-intercept represents the initial cost of joining the gym. It is the amount that the gym charges even if the fee to join is $0. In this case, the gym charges $5 to join.
54/g - 8 when g = 6 and h=3
The value of the simplified expression is -15.
What is the simplification of the expression?
The simplification of the expression is determined by substituting the appropriate values of the variables into the equation.
The given expression; = 54/g - 8h
The value of g = 6 and the value of h = 3,
The value of the expression is calculated as follows;
= 54/g - 8h
= 54/6 - 8(3)
= 9 - 24
= - 15
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The complete question is below:
54/g - 8h, when g = 6 and h=3
A builder is creating a scale drawing of a plot of land as shown. The original plot of land is 335 meters wide. The drawing uses a scale factor of 1500.
Find the missing side length of the original plot of land in meters and the missing side length of the scale drawing in centimeters.
Original plot of land's length:
m
Scale drawing width:
The calculated width of the scale drawing is 0.67 cm and the missing side length is undefined
Finding the missing side length in the original plotWe have the following statements from the question
The width of the original plot is 335 metersThe scale factor of the drawing is 1/500.The above statements means that the width of the scale is
Scale width = 335 cm * 1/500
When the products are evaluated, we have the following
Scale width = 0.67 cm
This means that the width of the scale drawing is 0.67 cm
Also, the missing side length of the original plot of land in meters cannot be calculated
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grade
Math
Z.1 Scale drawings of polygons WEA
Language
8
Polygon P is a scaled copy of polygon N.
10
4
Learn with an example
4
20
16
40
Polygon N
Polygon P
What scale factor takes polygon N to polygon P?
for
10
Watch a video ▸
To find the scale factor that takes polygon N to polygon P, you need to divide the corresponding side lengths of the two polygons.
How to Determine the Problem?To find the scale factor that takes polygon N to polygon P, you need to divide the corresponding side lengths of the two polygons.
For example, if one of the sides of polygon N is 6 units long, and the corresponding side of polygon P is 9 units long, then the scale factor is 9/6 or 1.5. This means that polygon P is 1.5 times larger than polygon N in all dimensions.
To determine the scale factor for all the corresponding sides of the polygons, you can compare each pair of sides and divide the length of the corresponding side of polygon P by the length of the corresponding side of polygon N.
It's important to note that when finding the scale factor between two polygons, you must compare corresponding sides. That is, you can't just choose any two sides to compare; you must compare the sides that are in the same position in the two polygons.
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!!!HELPP ME ASAP!!!! Claude is reading a science fiction book in which aliens have dropped a fungus on a 10 square mile section of a planet. The fungus spreads rapidly, increasing the area it covers by 50% every hour. The total
area of the planet is 200 million square miles. Claude created an equation and determined that it will take approximately 41 hours for the fungus to cover planet What is the equation that Claude created?
The equation Claude created is: 10 * (1.5)^t = 200,000,000, where t represents the number of hours.
Let A be the initial area of the fungus that covers the 10 square mile section of the planet.
After 1 hour, the fungus increases in size by 50%, which means it multiplies by 1.5. Thus, the area covered by the fungus after 1 hour is:
A + 1.5A = 2.5AAfter 2 hours, the fungus increases again by 50%, so its area becomes:
2.5A + 1.5(2.5A) = 6.25A
In general, after n hours, the area of the fungus becomes: A(1.5)^n
Since we want the fungus to cover the entire planet, we need to solve the following equation: A(1.5)^41 = 200,000,000
Simplifying, we get:
A = 200,000,000 / (1.5)^41
Therefore, the equation that Claude created is:
A(1.5)^n = 200,000,000
where n is the number of hours it takes for the fungus to cover the planet.
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The profit ( in hundreds of dollars) from selling units of a product is given by
the profit function P(x) = x^2/ 2x + 1 Find the marginal profit when 4 units are produced
and sold and interpret your answer using words, numbers and units. Be very specific.
(Round the number part of your answer to the nearest cent.)
the marginal profit when 4 units are produced and sold is approximately -$69.14. This means that when producing and selling the 4th unit, the profit will decrease by $69.14.
To find the marginal profit when 4 units are produced and sold, we first need to find the derivative of the profit function P(x) with respect to x. The given profit function is:
P(x) = (x^2) / (2x + 1)
Now, let's find its derivative, which represents the marginal profit function:
dP/dx = (d/dx(x^2))/(2x + 1) - (x^2)(d/dx(2x + 1))/((2x + 1)^2)
First, find the derivative of x^2 and 2x + 1:
d/dx(x^2) = 2x
d/dx(2x + 1) = 2
Now, substitute these values into the marginal profit function:
dP/dx = (2x)/(2x + 1) - (x^2)(2)/((2x + 1)^2)
Next, we'll find the marginal profit when 4 units are produced and sold. So, let's substitute x = 4 into the marginal profit function:
dP/dx(4) = (2 * 4)/(2 * 4 + 1) - (4^2)(2)/((2 * 4 + 1)^2)
dP/dx(4) = (8)/(9) - (32)(2)/(81)
dP/dx(4) = (8 - 64)/(81)
dP/dx(4) = -56/81
Since the profit is in hundreds of dollars, we need to multiply the marginal profit by 100 to get the value in dollars. Then, round to the nearest cent:
Marginal profit in dollars = (-56/81) * 100 ≈ -$69.14
So, the marginal profit when 4 units are produced and sold is approximately -$69.14. This means that when producing and selling the 4th unit, the profit will decrease by $69.14.
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Jaime is cutting shapes out of cardboard to make a piñata. One of the shapes is shown in a
coordinate grid
c. (0,10)
d. (3,2)
e. (9,0)
f. (3,-2)
g (0,-10)
h. (3,-2)
a. (-9,0)
(it’s the shape of a star)
What is the length of side AB? Round your answer to the nearest tenth of a unit.
Show your work.
The length of side AB is 6.3 units.
How to find the length of side ABThe length of side AB is solved using the distance formula below
AB = √((x₂ - x₁)² + (y₂ - y₁)²
where
(x₁, y₁) = (-9, 0) and
(x₂, y₂) = (-3, 2).
AB = √((-3 - (-9))² + (2 - 0)²)
AB = √(6² + 2²)
AB = √(40)
AB = 2√(10)
AB = 6.3245
AB = 6.3 to the nearest tenth
Therefore, the length of side AB is 6.3 units.
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Need this fast
A) -24 Solve lim 69²-24 B) 4 a+2 2-a C) 24 D) - 4
The limit of (69²-24) as x approaches infinity is equal to infinity.
As x approaches infinity, the value of (69²-24) becomes very large, and it goes to infinity. Therefore, the limit of (69²-24) as x approaches infinity is infinity.
B) The limit of (4a+2)/(2-a) as a approaches 2 from the left is equal to -6 and as a approaches 2 from the right is equal to 6.
As a approaches 2 from the left, the denominator (2-a) approaches zero from the negative side, and the numerator (4a+2) approaches -6. Therefore, the limit of (4a+2)/(2-a) as a approaches 2 from the left is -6.
As a approaches 2 from the right, the denominator (2-a) approaches zero from the positive side, and the numerator (4a+2) approaches 6. Therefore, the limit of (4a+2)/(2-a) as a approaches 2 from the right is 6.
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Small baskets of tomatoes are sold at a vegetable stand for $3 per basket. Large
baskets of tomatoes are sold at the stand for $5 per basket. Only whole numbers of
baskets may be purchased.
A customer purchases a total of 8 baskets of tomatoes and pays $36.
A. Write and solve a system of equations that models the number of small
baskets (x) and the number of large baskets () that the customer purchases.
Show or explain all your work.
The customer purchased 2 small baskets and 6 large baskets.
Let x be the number of small baskets and y be the number of large baskets that the customer purchases.
We can set up a system of two equations based on the information given:
Equation 1: x + y = 8 (The total number of baskets purchased is 8)
Equation 2 3x + 5y = 36: (The total amount paid for the baskets is $36)
To solve this system, we can use either substitution or elimination method.
Using substitution method:
From Equation 1, we have x = 8 - y.
Substitute this into Equation 2:
3(8 - y) + 5y = 36
24 - 3y + 5y = 36
2y = 12
y = 6
Now, we can substitute y = 6 back into Equation 1 to find x:
x + 6 = 8
x = 2
Therefore, the customer purchased 2 small baskets and 6 large baskets.
Using elimination method:
We can multiply Equation 1 by 3 and subtract it from Equation 2 to eliminate x:
3x + 5y = 36
- (3x + 3y = 24)
2y = 12
y = 6
Now, we can substitute y = 6 back into either Equation 1 or Equation 2 to find x. Let's use Equation 1:
x + 6 = 8
x = 2
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I have some coins in my pocket. Nickles and pennies I have a total of $. 41 I have 21 coins in total. How many Nickles and pennies do I have?
The number of nickels and pennies in the pocket is 5 and 16 respectively.
How to find the number of coins?To find the number of coins, Let's assume the number of nickels is x and the number of pennies is y.
According to the problem, we have two equations:
The total value of the coins is $0.41:
0.05x + 0.01y = 0.41
The total number of coins is 21:
x + y = 21
Now we can solve this system of equations to find x and y. One way to do this is to use substitution.
Solving the second equation for y, we get:
y = 21 - x
Substituting this into the first equation, we get:
0.05x + 0.01(21 - x) = 0.41
Simplifying:
0.05x + 0.21 - 0.01x = 0.41
0.04x = 0.2
x = 5
So we have 5 nickels.
Substituting this into the equation y = 21 - x, we get:
y = 21 - 5 = 16
So we have 16 pennies.
Therefore, the number of nickels and pennies in the pocket is 5 and 16 respectively.
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For each pair of numbers, decide if lines with these gradients are perpendicular or not. a) 5 and 1/ 5 b) 2/3 and -1/3 c) and -1/1 d) - and 3
The pair of numbers 3/5 and -5/3, -1/3 and 3 are perpendicular because two lines are perpendicular if and only if the product of their gradients is -1.
Each pair of numbers, we have to decide if lines with these gradients are perpendicular or not
Two lines are perpendicular if and only if the product of their gradients is -1.
For 5 and 1/5
The product is 1 which is not -1, so these are not perpendicular.
For 3/5 and -5/3
The product is -1 so these are perpendicular
For 1/4 and -1/4
The product is -1/16 so these are not perpendicular.
For -1/3 and 3
The product is -1 so these are perpendicular
Hence, the pair of numbers 3/5 and -5/3, -1/3 and 3 are perpendicular.
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