Answer:
395.84
Step-by-step explanation:
The radius squared is nine. 9 times pi then 14, is 395.84
can plants the seed of one and a half inch below the ground
Answer:
The plant is 2.5 inches above the ground!
Step-by-step explanation:
i just did it
Answer:
Could you please rephrase this?
Solve the two-step equation. -9x + 0.4 = 4 Which operation must be performed to move all the constants to the right side of the equation? Then, which operation must be performed to isolate the variable? The solution to the equation is x = .
Answer:
x=-0.4
Step-by-step explanation:
We have the equation:
[tex]-9x+0.4=4[/tex]
First, the operation to move all the constants to the right side is subtraction since we would have to subtract 0.4 from each side, let's see this:
[tex]-9x+0.4=4\\-9x+0.4-0.4=4-0.4\\-9x=3.6[/tex]
Now, we have all the constants on the right side of the equation.
Now, the operation we need to perform to isolate the variable is division (since the x has a -9 that is being multiplied by x) we need to do the opposite operation:
[tex]-9x=3.6\\\frac{-9x}{-9} =\frac{3.6}{-9} \\x=-0.4[/tex]
Thus, the answer to this equation is x= -0.4
Answer:
a)
Subtract 0.4 from both side.
-9x +0.4 = 4
-9x + 0.4 - 0.4 = 4 - 0.4
-9x = 3.6
b)
divide by -9 both side
-9x/-9 = 3.6/-9
x = -0.4
Step-by-step explanation:
-9x+0.4=4
-0.4 -0.4
_______________
-9x=3.6
__ __
-9 -9
________________
x=-0.4
AM really good !
Step-by-step explanation:
The distance between the towns of Averton and Brackston is 10km. On map the distance is 5cm. What is the scale of the map in its simplest form
Answer: The scale of the map in its simplest form is 1:200,000
Step-by-step explanation: From the question,
The distance between the two towns is 10km which is a distance of 5cm on the map.
This means, 5cm represents 10km. Now we will determine what 1cm represents.
If 5cm represents 10km
Then 1cm will represent (10÷5) km
Hence, 1 cm will represent 2km
Now, convert 2km to cm
2km = 2000m = 200,000cm
Hence, 1cm represents 200,000cm
This means on the map 1cm represents 200,000cm.
The scale of the map is therefore
1:200,000
Suppose you’re on a game show, and you’re given the choice of three doors: Behind one door is a car; behind the others, goats. You pick a door, say No. 1, and the host, who knows what’s behind the doors, opens another door, say No. 3, which has a goat. The host then says to you, "Do you want to pick door No. 2 instead of door No. 1?" Is it to your advantage to switch your choice?
Answer:
I think it is to my advantage to switch my choice to door 2.
Step-by-step explanation:
Under the normal circumstances, switching to another choice has increased one,s chances to getting a car which is 2/3 and just sticking to a choice gets one 1/3.
Since we already have a vague idea bout what is already behind doors 1 and 3, I think it is to my advantage to switch my choice to door 2.
A 65 ft. long swimming pool is to be constructed. The pool will be 4 ft. deep at one end and 11 ft. deep at the other. To the nearest degree, what will be the measure of the acute angle the bottom of the pool makes with the wall at the deep end
Answer:
Measure of the acute angle = 84°
Step-by-step explanation:
In the figure attached,
ABDE is a swimming pool having length 'AB' = 65 feet
Depth of one end of the pool is BE = 4 feet
And depth of the other end AD = 11 feet
Acute angle between the bottom of the pool (DE) and wall of the deep end (AD) is ∠ADE.
Now from ΔCDE,
tanx = [tex]\frac{EC}{DC}[/tex]
tanx = [tex]\frac{7}{65}[/tex]
x = [tex]\text{tan}^{-1}(\frac{7}{65})[/tex]
x = 6.15°
Now measure of acute angle the bottom of the pool makes with wall at he deep end,
m∠ADE = (90 - 6.15)°
= 83.85°
≈ 84°
The following statement is either true (in all cases) or false (for at least one example). if false, construct a specific example to show that the statement is not always true. such an example is called a counterexample to the statement. if the statement is true, give a justification. if v_1, v_2, v_3 are in ropf^3 and v_3 is not a linear combination of v_1, v_2, then {v_1, v_2, v_3} is linearly independent. fill in the blanks below. the statement is take v_1 and v_2 to be multiples of one vector and take v_3 to be not a multiple of that vector. for example, v_1 = [1 1 1], v_2 = [2 2 2], v_3 = [1 0 0] since at least one of the vectors is a linear combination of the other two, the three vectors are linearly
Answer:
Step-by-step explanation:
The following statement is either true (in all cases) or false (for at least one example). if false, construct a specific example to show that the statement is not always true. such an example is called a counterexample to the statement. if the statement is true, give a justification. if v_1, v_2, v_3 are in ropf^3 and v_3 is not a linear combination of v_1, v_2, then {v_1, v_2, v_3} is linearly independent. fill in the blanks below. the statement is take v_1 and v_2 to be multiples of one vector and take v_3 to be not a multiple of that vector. for example, v_1 = [1 1 1], v_2 = [2 2 2], v_3 = [1 0 0] since at least one of the vectors is a linear combination of the other two, the three vectors are linearly
Find the size of each of two samples (assume that they are of equal size) needed to estimate the difference between the proportions of boys and girls under 10 years old who are afraid of spiders.
Answer:
The size will be "431".
Step-by-step explanation:
On assuming:
P1 = 0.5
P2 = 0.5
Now,
[tex]q1=1-p1[/tex]
[tex]=1-0.5[/tex]
[tex]=0.5[/tex]
and,
[tex]q2=1-p2[/tex]
[tex]=1-0.5[/tex]
[tex]=0.5[/tex]
Margin's error will be,
E = 0.07
For 96% CI critical will be:
Z = 2.054
So,
Sample size = [tex](p1q1+p2q2)\times (\frac{Z}{E})^2[/tex]
On putting the estimated values, we get
= [tex](0.5\times 0.5+0.5\times 0.5)\times (\frac{2.054}{0.07})^2[/tex]
= [tex](0.25+0.25)\times (29.3)^2[/tex]
= [tex](0.5)\times (858.49)[/tex]
= 431
What transformations were applied to ABC to obtain A'B'C'?
Answer: rotated 90 degrees counterclockwise and shifted 2 units up.
Step-by-step explanation:
After sitting out of a refrigerator for a while, a turkey at room temperature 71 f is placed into an oven. The oven temperature is 325 f. Newton's Law of Heating explains that the temperature of the turkey will increase proportionally to the difference between the temperature of the turkey and the temperature of the oven.
The turkey reaches the temperature of 117 f after 1.5 hours. Using this information, find the value of kk, to the nearest thousandth. Use the resulting equation to determine the Fahrenheit temperature of the turkey, to the nearest degree, after 4.5 hours.
Answer: The value of k to the nearest thousandth is -0.133
The of the turkey to the nearest degree after 4.5 hours is 186F
Step-by-step explanation: Please see the attachments below
Cars lose value the farther they are driven. A random sample of
11
1111 cars for sale was taken. All
11
1111 cars were the same make and model. A line was fit to the data to model the relationship between how far each car had been driven and its selling price.
Complete Question
which on these linear equations best describe the given model
The description and diagram of the model is shown on the first uploaded image
Answer:
The linear equation is [tex]y = -\frac{1}{4}x + 40[/tex]
Step-by-step explanation:
Generally a linear equation is mathematically represented as
[tex]y = mx+c[/tex]
m is the slope which can be obtained from the graph diagram as
[tex]s = \frac{30 -20}{80 -40}[/tex]
[tex]s = \frac{1}{4}[/tex]
Now this slope is a negative slope as seen from the diagram so
[tex]s =-\frac{1}{4}[/tex]
The intercept is 40 as seen from the graph
So the linear equation is
[tex]y = -\frac{1}{4}x + 40[/tex]
Answer:
sorry i need the points
Step-by-step explanation:
What is the definition of an acute angle?
Answer:
Measure less 90 degrees
Step-by-step explanation:
Less than 90 degrees measure acute angle. 90 degrees in right corner. Obtuse corners are larger than 90 degrees
Hope this helps.
Answer: An angle less than 90 degrees
Step-by-step explanation:
An angle that is less than 90° is known as an acute angle. The acute angle is otherwise called the angle which is less than the right angle.
Students are designing a new town as part of a social studies project on urban planning. ey want to place the town’s high school at point A and the middle school at point B. they also plan to build roads that run directly from point A to the mall and from point B to the mall. the average cost to build a road in this area is $550,000 per mile. . c. Draw the road from point A to the mall and find its length. d. Draw the road from point B to the mall and find its length. e. How much farther from the mall is point B than point A? How much more will it cost to build the longer road?
Answer:
c, d. see attached
e. about 2.96 miles; about $1.63 million
Step-by-step explanation:
e. The x-coordinates of points A and B are 1/3 and 2/3 of the x-coordinate of "Downtown", respectively. The y-coordinates of A and B are 2/3 and 1/3 of the y-coordinate of "Town pool", respectively. Then the distances from A and B to the Mall can be found using the Pythagorean theorem:
A to Mall = √(4² +(10/3)²) = √(244/9) ≈ 5.20683 . . . miles
B to Mall = √(8² +(5/3)²) = √(601/9) ≈ 8.17177 . . . miles
The difference in distance is ...
(BM -AM) = 8.17177 -5.20683 = 2.96493 . . . miles
The mall is about 2.96 miles farther from point B than from point A.
The additional cost is the difference in miles multiplied by the cost per mile:
(2.96 mi)($0.550 M/mi) = $1.63 M
The additional cost of the longer road is about $1.63 million.
Which expression is equivalent to 4 (x + 2)? 6 x 4 (x) + 4 (2) 4 (x) + 4 8x
Answer:
4x+8 or 4 (x) + 4 (2)
Step-by-step explanation:
Hope it helps.
Answer:
B
Step-by-step explanation:
4(x+2).
By expanding the expression we have;
4(x+2) = 4× x + 4× 2 = 4(x) + 4(2)
(geometry) PLZ HELP ASAP!
Answer:
About 25.1 cubic meters
Step-by-step explanation:
The diameter of a circle is twice the radius, meaning that the radius of the base of this cone is 4/2=2 meters. The formula for the volume of a cone is:
[tex]V=\dfrac{1}{3} \pi r^2 h=\\\\\dfrac{1}{3} \cdot \pi \cdot 2^2 \cdot 6\approx 25.1[/tex]
Hope this helps!
∆LMN ∼ ∆PON. What is the value of x? Select one: a. 28 1/3 b. 36 c. 20 d. 25
Answer:
Option B. 36
Step-by-step explanation:
From the figure attached,
ΔLMN ~ ΔPON
Therefore, corresponding sides of these similar triangles will be in the same ratio.
[tex]\frac{LM}{OP}=\frac{MN}{ON}=\frac{LN}{PN}[/tex]
[tex]\frac{LM}{OP}=\frac{MN}{ON}[/tex]
[tex]\frac{42}{14}=\frac{x}{12}[/tex]
x = [tex]\frac{42\times 12}{14}[/tex]
x = 36
Therefore, measure of side MN = x = 36 units
Option B. will be answer.
Jane is using a sextant to measure her distance from a building of height 270 feet. Her eyes
are 5 feet 3 inches above the ground. The angle of elevation from her viewpoint using the
sextant is 40°. How far away, measured to the nearest foot, is Jane from the building?
a) 221 feet b) 203 feet c) 170 feet d) 316 feet e) none of these.
Answer:
d) 316 feet
Step-by-step explanation:
Now 3 Inches = 0.25 feet
Therefore: 5 feet 3 inches =5.25 feet
The problem forms a right triangle in which the height of the triangle
= 270 -5.25 =264.75 feet.
Using Trigonometric ratios
[tex]\tan 40^\circ=\dfrac{264.75}{y} \\$Cross multiply\\y\tan 40^\circ=264.75\\y=264.75 \div \tan 40^\circ\\y=315.5$ feet[/tex]
Therefore, Jane is approximately 316 feet from the building.
Answer: d) 316 feet
Step-by-step explanation:
A right angled triangle ABC is formed.
BC represents the height of the building minus the height of Jane's eyes from the ground. AB represents Jane's distance from the building.
12 inches = 1 feet
3 inches = 3/12 = 0.25 feet
Therefore, the height of her eyes from the ground is 5 + 0.25 = 5.25 feet
Therefore, BC = 270 - 5.25 = 264.75 feet
To determine AB, we would apply the the tan trigonometric ratio which is expressed as
Tan# = opposite side/adjacent side
Tan 40 = 264.75/AB
AB = 264.75/tan40
AB = 264.75/0.839
AB = 316 feet
Want brainliest? Get this correct , What is one of the negative effects of globalization?
Answer:
B
Step-by-step explanation:
the reason is, i suffered it ;)
Which of the following terms describes a company's first sale of stock to the
public?
O A. Circular flow model
B. Debt financing
O C. Venture capital
D. Initial public offering
Answer:
D. Initial public offering
Step-by-step explanation:
A P E X
Find the y and x intercept
Answer: See below
The line goes through -4 on the x-axis (horizontal line) and 0 on the y-axis. Therefore the x-intercept is (-4, 0)
The line goes through -8 on the y-axis (vertical line) and 0 on the x-axis. Therefore the y-intercept is (0, -8)
need help fast this is time
Answer:
x= 34
Step-by-step explanation:
96 + 50 + x = 180
180 - 146 = x
x= 34
Answer: x = 34
Step-by-step explanation:
The interior angles of a triangle add up to 180.
So we can set an equation to 180 like this: [tex]180 = x + 96 + 50[/tex]
We can simplify this:
[tex]180 = x +146[/tex]
Now we need to isolate x to solve for it.
We do this by subtracting the 146.
[tex]34 = x[/tex]
venona is solving the equation-3+4x=9 in order to isolate the variable term
Answer:
x = 3
Step-by-step explanation:
-3 + 4x = 9 .... add the 3 over
4x = 12 .... divide by 4
x = 3
Find the y intercept of the line 3y=12x+15
Answer:
y- intercept = 5
Step-by-step explanation:
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
Given
3y = 12x + 15 ( divide all terms by 3 )
y = 4x + 5 ← in slope- intercept form
with y- intercept c = 5
The y-intercept of the given line, 3y=12x+15 is: 5.
What is the y-intercept of a line?The slope-intercept form equation of a line easily helps us to determine the y-intercept of the line, b.y = mx + b represents the equation of a line in slope-intercept form."b" is the y-intercept.Given:
3y=12x+15
Rewrite in slope-intercept formy = 12x/3 + 15/3
y = 4x + 5
Therefore, the y-intercept of the given line, 3y=12x+15 is: 5.
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What is the equation for Graph B? Use C for hours in class and S for hours studying. Use * to indicate multiplication
Answer:
[tex]S=\frac{C}{2}[/tex]
Step-by-step explanation:
From the graph B,
Let the equation of the line representing the relation between hours spent in studying 'S' and hours spent in class 'C' is,
S = mC + b
Where m = Slope of the line
b = y-intercept of the line
We choose two points (2, 1), and (4, 2) lying on the line.
Slope 'm' = [tex]\frac{y_{2}-y_{1}}{x_{2}-x_{1}}[/tex]
m = [tex]\frac{2-1}{4-2}[/tex]
m = [tex]\frac{1}{2}[/tex]
y-intercept 'b' = 0
Equation of the line will be
S = [tex]\frac{1}{2}C[/tex]
Aubrey is making cone-shaped hats for a birthday party. How much paper does Aubrey need for each hat? Use 3.14 for pi and round your answer to the nearest inch
Answer:
About 75 in²; Aubrey found the surface area of the cone and included the base.
Complete question:
Aubrey is making cone-shaped hats for a birthday party. She mistakenly thinks that she will need about 104 square inches of paper for each hat.Cone with diameter six inches and slant height eight inches.What is the correct amount of paper Aubrey will need per hat? Explain Aubrey’s mistake. Use 3.14 for π and round to the nearest inch.
Step-by-step explanation:
Lateral surface area of a cone = Paper required to for each hat
Lateral surface area = πrl
where, r is radius of the cone and l is lateral height of the cone
Lateral surface area = π(3)(8)
= 75.36 square inches
≈ 75 square inches
Therefore, total paper required for each cap is about 75 square inches.
Total surface area of the cone (Lateral area + Area of the base)
= πr(r + l)
= 3.14(3)(3 + 8)
= 103.62
≈ 104 square inches.
Aubrey did a mistake by finding the total surface area (including base area) of the cone instead of lateral surface area.
Answer:
~75 in
Step-by-step explanation:
In the diagram, m 23 = 120° and mZ12 = 80°. Which
angle measures are correct? Check all that apply.
1
2
mZ1 = 60°
V
9 10
11 12
4
e
m2 13 = 80
56
13 14
m26 = 80
7
8 15 16
f
m25 = 60°
Om Z10 = 120°
'c
d
m2 14 = 100
Intro
Done
4 of 8
Answer:
A,B,D,F
Step-by-step explanation:
The angle measures that are true are:
m∠1 = 60
m∠13 = 80
m∠5 = 60
m∠14 = 100
What are corresponding angles?The angles that are in the same position on a given two parallel lines intersected by a transversal line are called the corresponding angles.
Corresponding angles are always equal.
We can also have alternate angles which are always equal.
We can also have alternate interior and exterior angles which are equal.
The angles on the same side make upto 180 degrees
We have,
m∠3 = 120
m∠12 = 80
Now,
1)
m∠1 = 60 (true)
m∠1 + m∠3 = 180
So,
m∠1 = 180 - 120 = 60
2)
m∠13 = 80 (true)
m∠12 and m∠13 are alternate angles.
So,
m∠13 = 80
3)
m∠6 = 80 ( false)
m∠6 and m∠3 are alternate angles.
So,
m∠6 = 120
4)
m∠5 = 60 (true)
m∠5 + m∠3 = 180
m∠5 = 180 - 120 = 60
5)
m∠10= 120 (false)
m∠10 + m∠12 = 180
m∠10 = 180 - 80 = 100
6)
m∠14 = 100 (true)
m∠14 + m∠12 = 180
m∠12 = 180 - 80 = 100
Thus,
The angle measures that are true are:
m∠1 = 60
m∠13 = 80
m∠5 = 60
m∠14 = 100
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The average mark of candidates in an aptitude test was 128.5 with a standard deviation of 8.2.Three scores extracted from the test are 148,102,152.What is the average of the extracted scores that are outliers
Answer:
102
Step-by-step explanation:
We have the mean (m) 128.5 and the standard deviation (sd) 8.2, we must calculate the value of z for each one and determine whether or not it is an outlier:
z = (x - m) / sd
In the first case x = 148:
z = (148 - 128.5) /8.2
z = 2.37
In the second case x = 102:
z = (102 - 128.5) /8.2
z = -3.23
In the first case x = 152:
z = (152 - 128.5) /8.2
z = 2.86
The value of this is usually between -3 and 3, therefore when x is 102 it goes outside the range of the value of z, which means that this is the outlier.
What is the answer to 2(-2)+3(-5)
Answer:
-19
Step-by-step explanation:
2*(-2)+3(-5)=-4+(-15)= -19
what is -5 + 4 please send help
Answer:
The answer is -1
Hope this helped :3
Notice that we had an overall accuracy greater than 96% in the training data, but the overall accuracy was lower in the test data. This can happen often if we overtrain. In fact, it could be the case that a single feature is not the best choice. For example, a combination of features might be optimal. Using a single feature and optimizing the cutoff as we did on our training data can lead to overfitting. Given that we know the test data, we can treat it like we did our training data to see if the same feature with a different cutoff will optimize our predictions. Which feature best optimizes our overall accuracy
Answer:
Step-by-step explanation:
Training data overall accuracy is >96%
Test data overall accuracy is <96%
A single feature is not the best choice but a combination of features might be optimal.
The feature that best optimizes your overall accuracy is the combination of both cut off scores. The mean of the two cut off scores will optimize your predictions of overall accuracy.
Find the median of the data. 12,33,18,28,29,12,17,4,2
Answer:
Step-by-step explanation:
2, 4, 12, 12, 17, 18, 28, 29, 33
(17+18)/2
35/2= 17.5 is the median
The median is 17 for the data. 12,33,18,28,29,12,17,4,2 which is a mid value of the data.
What is the median?A median is a middle number in a series of numbers that have been arranged to lift, and it might be more informative of the set of data than the average. When there are extremes in the sequences that might affect the average of the numbers, the median is sometimes employed instead of the mean.
We have data:
12, 33, 18, 28, 29, 12, 17, 4, 2
After arranging in accending orde:
2, 4, 12, 12, 17, 18, 28, 29, 33
As we can see the mid-value is 17
Median = 17
Thus, the median is 17 for the data. 12,33,18,28,29,12,17,4,2 which is a mid value of the data.
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