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Rudik [331]
3 years ago
11

NEED HELP ASAP!!!! Okay, I have 5 proportional relationship questions, PLEASE HELP:

Mathematics
1 answer:
Natasha_Volkova [10]3 years ago
8 0

Answer:

The temperature yesterday was -6 because 7-13 is -6.

Step-by-step explanation:


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3 years ago
Find the area of the shaded region.
lbvjy [14]

Answer:

48\pi\\\approx 150.796

Step-by-step explanation:

1.Approach

To solve this problem, find the area of the larger circle, and the area of the smaller circle. Then subtract the area of the smaller circle from the larger circle to find the area of the shaded region.

2.Find the area of the larger circle

The formula to find the area of a circle is the following,

A=(\pi)(r^2)

Where (r) is the radius, the distance from the center of the circle to the circumference, the outer edge of the circle. (\pi) represents the numerical constant (3.1415...). One is given that the radius of (8), substitute this into the formula and solve for the area,

A_l=(\pi)(r^2)\\A_l=(\pi)(8^2)\\A_l=(\pi)(64)

3.Find the area of the smaller circle

To find the area of the smaller circle, one must use a very similar technique. One is given the diameter, the distance from one end to the opposite end of a circle. Divide this by two to find the radius of the circle.

8 ÷2 = 4

Radius = 4

Substitute into the formula,

A_s=(\pi)(r^2)\\A_s=(\pi)(4^2)\\A_s=(\pi)(16)

4.Find the area of the shaded region

Subtract the area of the smaller circle from the area of the larger circle.

A_l-A_s\\=64\pi - 16\pi\\=48\pi

\approx150.796

5 0
2 years ago
7 to the 6th power = n to the 8th power what is n
Valentin [98]

Answer:

n=7 3/4, -7 3/4

n=4.30351707...,-4.30351707...

8 0
3 years ago
What is the general form to find square roots
Effectus [21]

Answer:

see below (I hope this helps!)

Step-by-step explanation:

Square roots are usually in the form a√b where a and b are any rational number.

4 0
3 years ago
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