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Serhud [2]
4 years ago
13

Susie knows that cos(18°) = 0.9511. She writes another equation, shown below.

Mathematics
1 answer:
nadezda [96]4 years ago
5 0
I think its sin(72)=0.9511 


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how many circles can be drawn passing through three non collinear points and how many circles can be drawn passing through three
MrRissso [65]

Answer:

Only one circle can be drawn through three non nonlinear points, No circle can be drawn through three nonlinear points

Step-by-step explanation:

A circle has a curve. As long as the three non nonlinear points both have the same amount of distance from the center of the circle it can be a circle drawn. No circle can be drawn through three points on the line.

7 0
3 years ago
-5a + 15/2a - 25 = 53.2 + 21.8​
dedylja [7]

Answer:

a= 40

Step-by-step explanation:

-5a + 7.5a - 25 = 53.2 + 21.8​

add like terms on both sides: 2.5a - 25 = 75

add 25 on both sides: 2.5a = 100

divide both sides by 2.5: a = 40

5 0
3 years ago
Read 2 more answers
A rectangle has perimeter 20 m . Express the area of the rectangle as a function of the length of ones its side.
kondor19780726 [428]

Answer:

A = 10W - W²

Step-by-step explanation:

Perimeter of a rectangle = 2(L+W)

Area of a rectangle =LW

L is the length

W is the width

Given

Perimeter = 20m

20 = 2 (L+W)

10 = L+W

L = 10 - W ....2

Substitute equation 2 into the formula for calculating the area

Recall that A = LW

A = (10-W)W

A = 10W - W²

Hence the area of the rectangle as a function of the length of ones its side is expressed as A = 10W - W²

6 0
3 years ago
Solve for the problem 13^3x-1=91
gogolik [260]

Answer:

{13}^{3} x - 1 = 91 \\  {13}^{3}x = 91 - 1 \\  {13}^{3}x   = 90 \\  2,197x = 90 \\  \frac{2197x}{2197}  =  \frac{90}{2197}  \\ x = 0.04

7 0
4 years ago
It is not a function because both (2, 2) and (2,−2) have the same x-coordinate. It is a function because both (2, 2) and (2,−2)
olya-2409 [2.1K]

Answer:

It is not a function because both (2,2) and (2,-2) have the same x-coordinate.

Step-by-step explanation:

To be a function for the same x value there should NOT be two different y values.

So, in (2, 2) and (2,-2)

For the same x value 2, there are two different y values 2, -2.

So, this is not a function.

3 0
3 years ago
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