8th grade math, please help.

Answer: it’s a

Step-by-step explanation: took the test got it right

The required measurement closest to the area of the circle in square centimeters is 78.5cm². Option B is correct.

The area of the circle is given by the pie times square of the radius.

Area of circle = πr^2

Here,
Let the radius of the given circle be r = 5 cm
Area of the circle = πr²

Substitute the value in the above expression,
Area of the circle = π 5²
Area of the circle = 78.5cm²

Thus, the required measurement closest to the area of the circle in square centimeters is 78.5cm². Option B is correct.

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Answer:

The correct answer is 51%

Answer:

(photo)

Step-by-step explanation:

Since the b in the format is +3 you would have to graph it on the positive three on the y axis then you graph the rise/ run which is 3x

Answer:

250 hamburgers were sold on Sunday

Answer:

30 yards of fence

Step-by-step explanation:

First, convert 60 feet to yards and 30 feet to yards. Remember, 1 foot= 3 yards.

60/3= 20 yards

30/3= 10 yards

Then you add the length and the width of the fence (in yards) to find the total yards of fence.

20+ 10= 30 yards of fence

Answer:

$69

Step-by-step explanation:

Price of book after the price increase

= 60 + 15% of 60

= 60 + 0.15*60

= 60 + 9.0

= $69

Answer:

T=39.46

Step-by-step explanation:

13(t+13)=676

multiply 13 by t and by 13

then you will have 13t + 169=676

isolate the variable

13t + 169= 676

substract 169 from both sides

13=507 divided both side by 13

T=39

Step-by-step explanation:

G(x) = 2/3 x - 6     switch x and y around and solve for y.

y = 2/3 x - 6

x = 2/3 y - 6

x + 6 = 2/3 y

3/2  x + 9 = y

Answer:

Step-by-step explanation:

The solution is, The answer for this case is given by:

y = 2 ^ (x + 2) +3

option 2

Function, in mathematics, an expression, rule, or law that defines a relationship between one variable (the independent variable) and another variable.

here, we have,

For this case we observe the cut point with the y axis in:

(0, 7)

The function that complies with this is:

y = 2 ^ (x + 2) +3

We have then:

y = 2 ^ (0 + 2) +3

y = 2 ^ (2) +3

y = 4 + 3

y = 7

Answer:

The answer for this case is given by:

y = 2 ^ (x + 2) +3

option 2

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Answer:

30.24

Step-by-step explanation:

I times the base by the height then divided by 2

Answer:

Add the equations together

Step-by-step explanation:

The reason why I know this is because they are all like terms so that would be the smartest choice to do first.

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Answer:

49.093

Step-by-step explanation:

Given the regression equation :

ŷ = –0.227x + 50.455

x represents the price of bobbleheads (measured in dollars)

ŷ is the predicted demand of bobbleheads (in units).

Preductwd demand ; when x = 6

ŷ = –0.227(6)+ 50.455

= 49.093

Answer:

108 %

Step-by-step explanation:

Answer:

51%

Step-by-step explanation:

(Amount of change/original value)

25.99÷49.99=0.51

Answer:

Multyplying by 1 third is the same as dividing by 3, so it's the opposite as multiplying by 3.

Answer:

40%

Step-by-step explanation:

Answer:

40%

Step-by-step explanation:

Given:

The graph of line.

To find:

The gradient of the line using rise/run method.

Solution:

We know that the gradient of a line is also known as slope.

[tex]Slope=\dfrac{Rise}{Run}[/tex]

Consider the two intercepts, then rise is distance between origin and y-intercept and run is the distance between origin and the x-intercept. But rise must be negative because the value of y decreased from 3 to 0.

[tex]Rise=-3[/tex]

[tex]Run=2[/tex]

Now,

[tex]Slope=\dfrac{Rise}{Run}[/tex]

[tex]Slope=\dfrac{-3}{2}[/tex]

The gradient of the line is [tex]-\dfrac{3}{2}[/tex].

Therefore, the correct option is C.

Answer:

5.2 feet

Step-by-step explanation:

It helps if you can make a drawing.

You are looking for the adjacent side of the 71° angle in a right triangle and 15 is the opposite side of the angle.

Let x = the distance from the building to the base of the ladder

Tan 71 = 15/x

xtan71 = 15

x = 15/tan 71 = 5.2 feet

Answer:

Step-by-step explanation:

The terms are:

Given:

Use the nth term formula:

Substitute:

Divide the second equation by the first:

Use the first equation to find the first term:

We have two sequences:

r = 4

r = -4

Answer:

hi thx................

Answer:

75/100

Step-by-step explanation:

15/20 = x/100

20x = 1500

x = 1500/20

x = 75

Answer:

[tex]3x^{2} + 3x +12[/tex]

Hope that helps!

Step-by-step explanation:

Answer:

x= -3 , y= - 1

Step-by-step explanation:

hope I was able to help:)

Answer:

900 cubes with side of 1/10 ft will fill the prism completely for a total volume of 9/10 ft ³

Answer:

total volume=l×b×h=1 1/2×1 1/5×1/2=3/2×6/5×1/2

=18/20=9/10ft³

I think

Answer:

$10.39 is the change

Step-by-step explanation:

We start by calculating the total score

9.55 + 18.12 = 27.67

we now calculate the sales tax

This is 7% of the total

= 7% of 27.67

7/100 * 27.67

= $1.94

The total now comes;

1.94 + 27.67 = $29.61

The total was 2 * 20 = $40

The change was;

$40 - $29.61 = $10.39

Answer:

-8i + 12

Step-by-step explanation:

-4i(2 + 3i) = -8i - [tex]12i^{2}[/tex] = -8i - 12 * (-1) = -8i + 12

Answer:

12−8i

Step-by-step explanation:

-(-4 *3+4*2i)

-4*3=12

4*2=8

=12-8i

Answer:

b = 75m

Step-by-step explanation: