Answer:
f(-2) = 0
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
BracketsParenthesisExponentsMultiplicationDivisionAdditionSubtractionLeft to RightAlgebra I
Functions
Function NotationStep-by-step explanation:
Step 1: Define
Identify given function.
f(x) = x² - 4
Step 2: Find f(-2)
[Function] Substitute in x:∴ the function when x = -2 is equal to 0.
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Topic: Algebra I
Auden rolled two number cubes and recorded the results. What is the experimental probability that the sum of the next two numbers rolled is greater than 5? Enter your answer as a simplified fraction.
Roll #1 Roll #2 Roll #3 Roll #4 Roll #5 Roll #6 Roll #7
5, 5 5, 6 6, 5 1, 2 2, 4 6, 5 1, 2
1 and 2 is 3 (2)
1 and 3 is 4 (3)
1 and 4 is 5 (4)
2 and 1 is 3 (5)
2 and 2 is 4 (6)
2 and 3 is 5 (7)
3 and 1 is 4 (8)
3 and 2 is 5 (9)
4 and 1 is 5 (10)
you have 36 different ways you can role and 10 of them are 5 or less so you have a 26/36 chance of rolling greater than 5
Find the value of x that will make A||B.
A
B.
14x
2x
X =
= [?]
Answer:
x = 30
Step-by-step explanation:
if A||B, then 4x + 2x must equals to 180 (interior angles of 2 parallel lines)
6x = 180
x = 30
A doctor observes a graph that shows the electrical activity (in volts) of the heart of a patient over a period of time (in seconds). Each spike corresponds to one heart beat. The doctor needs to calculate the heart rate of the patient in beats per minute.
What is the heart rate of this patient?
To calculate a patient's heart rate, the doctor must take into account a segment of time, such as a minute, and count the number of times the heart beats in that segment.
What is heart rate?Heart rate is a term that refers to the number of heart contractions or beats per unit of time.
Heart rate is usually measured at various points, but most commonly it is measured at the wrist, neck, or chest.
According to the above, the most common way for the doctor to establish the patient's heart rate is to count the heart beats in a segment of time such as one minute.
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60 beats per minute
I got it right on the Kahn Academy Unit Test, trust me <3
Convert the angle \frac{11\pi}{12} 12 11π radians to degrees
The angle 11π/12 radian after converting it to degree it become 165 degree.
What is an angle?The measurement between the two lines is called an "Angle" when the two lines or rays converge at a common location.
We have given:
An angle 11π/12
Let's denote it with β
[tex]\rm \beta = \dfrac{11\pi}{12}[/tex]
To convert it to degree, replace π with 180°, we get:
[tex]\rm \beta = \dfrac{11\times180}{12}[/tex]
β = 165°
Thus, the angle 11π/12 radian after converting it to degree it become 165 degree.
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create an expression equivalent to 4 (2x-3) -3x
When an integer m is divided by 5, the remainder is 3. When m is divided by 7, the remainder is 1. If m is greater than 40 but less than 80, what is one possible value of m.
Answer:
Possible value of m is 14
Step-by-step explanation:
The graph of a quadratic equation is shown here, and the intercepts with the axes are marked. Explain how you can use the graph to write the polynomial as a product of linear factors C(x - x1)(x - x2). Be sure to state the values of x1 and x2.
The graph is a quadratic function, and the equation of the function is C(x) = (x + 4)(x - 3)
How to determine the equation of the graph?From the graph the x-intercepts are:
x = -4 and x = 3
Rewrite as:
x + 4 = 0 and x - 3 = 0
Evaluate the product of both equations
(x + 4) * (x - 3) = 0* 0
This gives
(x + 4)(x - 3) = 0
Express as a function
C(x) = (x + 4)(x - 3)
Hence, the equation of the function is C(x) = (x + 4)(x - 3)
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PLS HELP!!! BRAINLY UP FOR GRABS!!! what are triangles with same angles but varying side lengths called??
Answer:
Congruent triangles
Or
Similar triangles
-5 x + y = -1
-5x + y = 10
Answer:
No solution
Step-by-step explanation:
As the coefficient of x is the same, and the constant terms are different, the lines will lie parallel to each other and never intersect.
Hence, this system of equations has no solution.
Answer:
no solution
Step-by-step explanation:
the equation has no solution
The triangle on the right is a scaled copy of the triangle on the left. Identify the scale factor. Express your answer as a whole number or fraction in simplest form.
Step-by-step explanation:
let x=8 for a small triangle
y=10 for a big triangle
Find the value of p .
A. 15
B. 3
C. 30
D. 28
Answer:
7p+7=37-3p
10p=30
p=3
answer : p=3 because ke=be
She is serving hot coffee and cold coffee in two rectangular-shaped tanks, each with dimensions width 8.75 inches, length 8.75 inches, height 23 inches.
The hot coffee has a density of 5.8 oz/in3 and the cold coffee has a density of 3.5 oz/ in3
(A) What is the volume of the coffee in each tank?
Show all math work needed to complete this problem.
(B) What is the mass of the coffee in each the tank?
Show all math work needed to complete this problem.
(C) How many tanks can be placed on a table which can support a maximum weight of 800 lb?
Explain why or why not.
Show all math work needed to complete this problem.
The volume of the coffee in each tank will be 1760. in³. The mass of cold coffee and hot coffee will be 6163.29 oz and 10213.45 oz. Then the number of the tank placed on a table is one only.
How to find the density and volume?She is serving hot coffee and cold coffee in two rectangular-shaped tanks, each with dimensions width of 8.75 inches, a length of 8.75 inches, and a height of 23 inches.
The hot coffee has a density of 5.8 oz/in³ and the cold coffee has a density of 3.5 oz/ in³.
Then the volume of the coffee in each tank will be
We know that the dimension of both tanks is equal. Then the volume will remains equal.
Volume = L × B × H
Volume = 8.75 × 8.75 × 23
Volume = 1760.9375 ≅ 1760.94 in³
Then the mass of the coffee in each the tank will be
The mass of hot coffee will be
Mass = Density × Volume
Mass = 5.8 × 1760.94
Mass = 10213.45 oz
The mass of cold coffee will be
Mass = Density × Volume
Mass = 3.5 × 1760.94
Mass = 6163.29 oz
Then the number of the tank placed on a table is one only.
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the area of the triangle below is 29.25 square centimeters the height is 6.5. what is the length of the base?
Answer: 9
Step-by-step explanation:
½bh = 29.25
½ × 6.5 × b = 29.25
B= 29.25/ 3.25
The length of the base of the triangle is 9 centimeters.
What is the base length of the triangle?The area of a triangle is simply expressed as half base multiplied by height.
Area A = 1/2 × base length × height
Given the dimensions of the triangle:
Area A = 29.25 square centimeters
Height = 6.5 centimeters
Base length =?
To find the height of the triangle, plug the given values into the above formula and solve for h:
Area A = 1/2 × base length × height
29.25 = 1/2 × base length × 6.5
29.25 = base length × 3.25
Base length = 29.25 / 3.25
Base length = 9 cm.
Therefore, the base length measures 9 centimeters.
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The product of a number y and 3 is 6.
Answer:
y=2
Step-by-step explanation:
y*3=6
divide both sides by 3
y=2
there are 75 students on the sapphire team and 1/5 of them are in the band . how many students are in band?
Answer:
15
Step-by-step explanation:
75/5 = 15
This spilts the 75 students into 5 different groups and each one has 15 which is 1/5 of the students
HELP ME WITH THIS PLEASEEE
Answer:
0.125%
Step-by-step explanation:
area of square
10*10=100
area of triangle
(5*5)/2=12.5
[tex]\frac{12.5}{100}[/tex]=0.125
helpppppp adappppppppppp
Answer:
MEAN = 14 (AS PER ESTIMATION)
MEDIAN = 17
Step-by-step explanation:
Mean=Sum of terms/No.of terms
Then,
→13+16+14+17+17+8+16/ = 101/7 = 14.428571....…
Given, there is a chance to estimate,Thus, The mean is 14 as per estimation.And.....Median = The middle number
= 17
ThankYouAB is a straight line.
Work out the size of angle x.
Not drawn accurately
132%
х
ܬ
B
Answer:
x would be 48
Step-by-step explanation:
180 (because its a straight line) take away 132 and it gives you 48
Circle A has center of (0,4) and a radius of 6, and circle B has a center of (-3,5) and a radius of 24. What steps will help show that circle A is similar to circle B?
Translate circle A using the rule (x + 3y - 1). Rotate circle A 180° about the center
Dilate circle A by a scale factor of 4
Reflect circle A over the line y = x
Answer: Translate circle A using the rule (x + 3y - 1), Dilate circle A by a scale factor of 4
Step-by-step explanation:
You need to first map the centers onto each other, then make the radii equal using a dilation.
A map of your town has a scale of 1 inch to 0.25 miles. There are two roads that are 5 inches apart on the map. What is the actual distance between the two roads? CLEARCHECK The actual distance between the two roads is miles.
Answer:
Step-by-step explanation:
I'm not oversimplifying this answer.
If 1 inch is .25 miles then all you have to do is multiply .25 miles by 5 inches and u get 1.25 miles.
[tex]\begin{array}{ccll} \stackrel{in}{model}&\stackrel{mi}{actual}\\ \cline{1-2} 1 & 0.25\\ 5& x \end{array} \implies \cfrac{1}{5}=\cfrac{0.25}{x}\implies x=(5)(0.25)\implies x=1.25[/tex]
ANSWER FOR 25 POINTS
Answer:
2058
Step-by-step explanation:
every 5 years is 0.53 so you times that by 11 to get 7.61 and then half of .53 is .265 and round that up you get three more years so 2058 is the answer.
What is the value of x?
Input Output
1 5
2 7
3 9
Х 17
to get the equation of any straight line, we simply need two points off of it, so let's use the points in the picture below.
[tex](\stackrel{x_1}{1}~,~\stackrel{y_1}{5})\qquad (\stackrel{x_2}{3}~,~\stackrel{y_2}{9}) ~\hfill \stackrel{slope}{m}\implies \cfrac{\stackrel{rise} {\stackrel{y_2}{9}-\stackrel{y1}{5}}}{\underset{run} {\underset{x_2}{3}-\underset{x_1}{1}}}\implies \cfrac{4}{2}\implies 2 \\\\\\ \begin{array}{|c|ll} \cline{1-1} \textit{point-slope form}\\ \cline{1-1} \\ y-y_1=m(x-x_1) \\\\ \cline{1-1} \end{array}\implies y-\stackrel{y_1}{5}=\stackrel{m}{2}(x-\stackrel{x_1}{1})[/tex]
now, if we use the last point from the table, namely (x , 17), we can see that x = x and y = 17, so let's plug those in the equation
[tex](17)-5=2(x-1)\implies 12=2x-2\implies 14=2x\implies \cfrac{14}{2}=x\implies 7=x \\\\[-0.35em] ~\dotfill\\\\ ~\hfill (7~~,~~17)~\hfill[/tex]
ANOTHER BIG QUESTION, 100 POINTS
Write reciprocals, opposites, the same, or negative reciprocals in each blank.
The slopes of parallel lines are _.
The slopes of perpendicular lines are _.
Find the slopes of lines AB and CD. Show your work.
Line AB goes through points A(3, 4) and B(7, 7).
Line CD goes through points C(0, 0) and D(-6, 8).
Use Parts I and II to determine if AB and CD are parallel, perpendicular, or neither. Explain your answer.
Graph and on the grid to support your answer from Part III.
Answer:
The slopes of parallel lines are the same
The slopes of perpendicular lines are negative reciprocals
Line AB
[tex]\textsf{let}\:(x_1,y_1)=(3,4)[/tex]
[tex]\textsf{let}\:(x_2,y_2)=(7,7)[/tex]
[tex]\implies \textsf{slope}\:(m)=\dfrac{y_2-y_1}{x_2-x_1}=\dfrac{7-4}{7-3}=\dfrac{3}{4}[/tex]
Line CD
[tex]\textsf{let}\:(x_1,y_1)=(0,0)[/tex]
[tex]\textsf{let}\:(x_2,y_2)=(-6,8)[/tex]
[tex]\implies \textsf{slope}\:(m)=\dfrac{y_2-y_1}{x_2-x_1}=\dfrac{8-0}{-6-0}=-\dfrac{4}{3}[/tex]
As the slopes of AB and CD are negative reciprocals of each other, lines AB and CD are perpendicular.
Which linear inequality is represented by the graph?
Answer:
y≤2/3x+1/5
or the very first one
Step-by-step explanation:
what’s the area and perimeter for this problem?
Answer:
area:1.9×0.75÷2
perimeter:2+0.75+2.25
What are the dimensions of the rectangular prisms you identified in parts a and b? list dimensions for all your decompositions (sets of shapes).
The dimensions of the rectangular prisms are the side lengths of the rectangular prism
How to determine the dimensions?
A rectangular prism has the following dimensions
Length, width and height
This means that the dimensions of the rectangular prisms are the length, width and height of the prism
To determine the dimension, we simply take the value of the above terms i.e. length, width and height
Note that the question is incomplete, so I gave a general explanation
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Consider the series [tex]\frac{1}{4} +\frac{1}{3} +\frac{4}{9} +\frac{16}{27} +\frac{64}{81}[/tex]
Does the series converge or diverge?
Answer:
Diverge
Step-by-step explanation:
Each successive term is larger than the previous one, so the series will diverge.
The given series can be condensed to
[tex]\displaystyle \frac14 + \frac13 + \frac49 + \frac{16}{27} + \frac{64}{81} + \cdots = \frac14 \left(1 + \frac43 + \frac{4^2}{3^2} + \frac{4^3}{3^3} + \cdots\right) = \frac14 \sum_{n=0}^\infty \left(\frac43\right)^n[/tex]
which is a geometric series with ratio 4/3. Since this ratio is larger than 1, the sequence of partial sums of the series diverges, so the infinite series also diverges.
We can also just the n-th term test:
[tex]\displaystyle \lim_{n\to\infty} \frac14 \left(\frac43\right)^n = \frac14 \lim_{n\to\infty} \frac{4^n}{3^n} = \infty[/tex]
since 4ⁿ > 3ⁿ for all n > 0.
Use the layout of the parking lot to answer the questions. what is the total area available for cars to park? m2. if the parking spaces are compact, they have an area of 12.5 m2. how many compact parking spaces will fit in the lot? . if the parking spaces are not compact, they will be 3 meters by 5.5 meters. how many noncompact parking spaces will fit in the lot? .
The true statements are:
The total area available is 858 square metersThe number of compact parking space is 68 The number of non-compact parking space is 52The total area available for cars to parkFrom the complete question, we have the dimensions of the parking lot to be: 78 meters by 19 meters
Also, the dimension of the aisle is: 8 meters by 78 meters
The total parking area is the difference between the parking lot area and the aisle area
This gives
Parking Area = 78 * 19 - 8 * 78
Parking Area = 858
The total area available for cars to park is 858 square meters
The number of parking spaceThe number of parking lot is the quotient of the total parking area and the area of each compact
So, we have:
n = 858/12.5
n = 68.64
Remove the decimal
n = 68
Hence, the number of parking space is 68
The number of parking space for non-compact parking spaceThe number of parking lot is the quotient of the total parking area and the area of each non-compact space
So, we have:
n = 858/(5.5 * 3)
n = 52
Hence, the number of parking space is 52
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help due today this might be confusing but try to answer
Answer:
56
Step-by-step explanation:
25 times 4 = 100
14 times 4 = 56
Solve this system of linear equations. Separate
the x- and y-values with a comma.
15x = -42 - 19y
3x = -54 - 19y
15x=-42-19y
15x+19y+42=0-(1)3x=-54-19y
3x+19y+54=0--(2)Subtract both
12x-12=012x=12x=1Put in second
3(1)+19y+54=019y+57=0y=-3So
(x,y)=(1,-3)Answer:
1, -3
Step-by-step explanation:
QuestionSolve the system of linear equations:
15x = -42 - 19y3x = -54 - 19y-------------------------------------------------------------------------------------
SolutionSubtract the equations to eliminate y:
15x = -42 - 19y
- 3x = -54 - 19y
----------------------
12x = 12
⇒ x = 12 ÷ 12
⇒ x = 1
Now substitute the found value of x into one of the equations and solve for y:
⇒ 15x = -42 - 19y
⇒ 15(1) = -42 - 19y
⇒ 15 = -42 - 19y
⇒ 19y = -42 - 15
⇒ 19y = -57
⇒ y = -57 ÷ 19
⇒ y = -3
Therefore, x = 1 and y = -3
