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Vikki [24]
3 years ago
6

PLEASE HELP!!!I will mark you as brainleist. !!!!!

Mathematics
1 answer:
SpyIntel [72]3 years ago
5 0

Answer:

7.722cm^2, x=129

Step-by-step explanation:

12*12=144- area of the whole square

the diameter for the circle is 12

radius is 6

Area for circle= pi* r²

3.142*6^2=113.112

144-113.112=30.888

30.888/4=7.722

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–2x + 1 – (–7x + 3) = –4 + 3(x – 2)
natali 33 [55]

Answer:

x = -4

Step-by-step explanation:

–2x + 1 – (–7x + 3) = –4 + 3(x – 2)

-2x + 1 + 7x - 3 = -4 + 3x - 6

-2x + 7x - 3x = -4 - 6 - 1 + 3

2x = -8

x = -8/2

x = -4

8 0
3 years ago
Solve the system of equations.<br> - 5y + 8x = -18<br> 5y + 20 = 58
likoan [24]

Answer:

Step-by-step explanation 2

6 0
4 years ago
The perimeter of the base of a square pyramid is 16 feet and it stands 20 ft tall. Calculate the volume.​
Vikentia [17]

Answer: 1706.67 feet

Step-by-step explanation:

Formula: Volume = \frac{1}{3} \alpha^{2}h

a is the length of the base's edge and h is the height. Since 16 is the length we would square it as it is the length, then we would multiply it by the height which is 20 ft.

<u>Steps: Multiply</u>

Volume = \frac{1}{3} \alpha^{2}h

= \frac{1}{3} * 16^{2} * 20

= 1706.67 feet

~I hope I helped you :)~

6 0
3 years ago
Help please and thank u​
LUCKY_DIMON [66]

Answer:

The line is y = (1/2)x + 3

Step-by-step explanation:

We can calculate a slope.  I'll use the two points (-4,1) and (-1,2.5).

Rise = (2.5-1) = 1.5

Run = (-1-(-4)) = 3

Rise/Run = Slope = (1.5/3.0) = 1/2

Find b, the y-intercept, by using point (-4,1) in the equation y = (1/2)x + b

y = (1/2)x + b

1 = (1/2)*(-4) + b

1 = -2 + b

b=3

The line is y = (1/2)x + 3

8 0
3 years ago
A bank deposit that earns interest annually is given by the function f(x)=500(1.03)^x. What was the initial deposit?
Margarita [4]
That formula means $500, earning 3% interest, compounded at the end of each year, for ' x ' years.
3 0
4 years ago
Read 2 more answers
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