3 years ago

X^2+10x-25=0solve by completing the square

Mathematics

1 answer:

julsineya [31]3 years ago

7 0

Hope this is the answer

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Solve for x ???????????

Aleks04 [339]

Do you recognize that the hypotenuse here has the length 22 and that the opposite side is the unknown (x)? The angle is 21 degrees.

This is a perfect application of the tangent function:

tan 21 deg = opp / adj = opp / 22 = x / 22

tan 21 deg = 0.384 so x would be 22 tan 21 deg, or
x = 22*(0.384)
= 8.45 (answer)

6 0

3 years ago

There is maybe be answer two

dolphi86 [110]

I believe it would be the first choice

Hope that helps!

4 0

2 years ago

Read 2 more answers

A square has an area of 150 square centimeters. Which of the

Sergio [31]

Answer:

C) 12.2 cm

Step-by-step explanation:

To find the area of a square, you multiply length and width, which for a square, are the same. So to find the length of one of its sides, you have to take the square root of the area.

$L^{2} = 150\\\\L=\sqrt{150} \\L= 12.2\\$