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2 years ago

14

What is the exact circumference of the circle? Circle A with diameter 40 feet. 10π feet 20π feet 40π feet 60π feet

1 answer:

Lunna [17]2 years ago

6 0

20 pi is the answer r=d/2

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Solve.<br> y=x - 7<br> 5+2y=7

lesantik [10]

Answer:

$\huge\boxed{x=8;\ y=1\to(8;\ 1)}$

Step-by-step explanation:

$\left\{\begin{array}{ccc}y=x-7&(1)\\5+2y=7&(2)\end{array}\right\\\\\text{Substitute (1) to (2) and solve for x:}\\\\5+2(x-7)=7\qquad\text{use the distributive property}\\\\5+(2)(x)+(2)(-7)=7\\\\5+2x-14=7\\\\2x+(5-14)=7\\\\2x-9=7\qquad\text{add 9 to both sides}\\\\2x-9+9=7+9\\\\2x=16\qquad\text{divide both sides by 2}\\\\\dfrac{2x}{2}=\dfrac{16}{2}\\\\\boxed{x=8}$

$\text{Substitute it to (1):}\\\\y=8-7\\\\\boxed{y=1}$

8 0

2 years ago

Read 2 more answers

Find the area of the figure.

Gnoma [55]

15.5 x 12.4 = 192.2 so the answer is 192.2 square feet.

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2 years ago

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Solve -12>3x then graph on a number line that you create and please please show all of your work step by step.

V125BC [204]

The work has one step: divide the expression by 3.
.. -4 > x

Because the symbol is "greater than", the circle at x=-4 is an open circle.

5 0

3 years ago

Look at the screenshot

melomori [17]

Answer:

4

Step-by-step explanation:

the graph goes from aprox (0, 1) to (2, 8)

3 0

2 years ago

Student Council sells bottled water at the cheerleading completion. At this rate, how many cases of bottled water would they sel

amid [387]

Answer:

27

Step-by-step explanation:

Lets find the rate of selling:

Let v= the rate of selling, b = number of bottles of water, and t = time:

b over t gives us the $v=\frac{b}{t}=\frac{3}{20}=\frac{6}{40}=0.15$ rate of selling:

3 hours is 60min * 3 = 180 mins, and since v=b/t, vt=b:

(0.15) * 180 = 27 bottles of water

4 0

2 years ago