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Inessa [10]
3 years ago
13

The square below has an area of 22 - 10.2 + 25 square meters.

Mathematics
1 answer:
ZanzabumX [31]3 years ago
6 0

Answer:

x = 1.89

Step-by-step explanation:

Solve 22 - 10.2 + 25 to get 36.8 as the square's area.

Set up the equation 36.8 = (-10x + 25)^2 to represent the relationship between one side length and the area.

Reverse the equation to solve for x! Find the square root of both sides to cancel out the exponent. This gets you: 6.07 = -10x + 25.

Subtract 25 from both sides, then divide by -10 to get x by itself.

x = 1.89

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y = 3x + 2

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Answer:

see explanation

Step-by-step explanation:

The sum of the 3 angles in a triangle = 180°, thus

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∠2 = 90° - 72° = 18°

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Answer:

\boxed {\boxed {\sf C. \ 4 \ inches}}

Step-by-step explanation:

Circumference is the perimeter of a circle. It can be found using the formula:

c= \pi d

However, we are given the radius.

  • The radius measures from the center to the edge of the circle.
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The formula can be rewritten as:

c= \pi 2 r

We know the circumference is 25.12 inches.

25.12 \ in = \pi 2r

Let's round pi to 3.14

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Divide both sides by 3.14 because the inverse of multiplication is division.

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Divide both sides by 2.

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The radius of the disc is <u>4 inches.</u>

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