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irina [24]
2 years ago
13

Simplify the following expression by combining like terms 2x+7x^2-5x+8x^2

Mathematics
1 answer:
olga2289 [7]2 years ago
3 0

Answer:15x^2-3x

Step-by-step explanation:

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Three plus the reciprocal of a number equals 7 divided by that number. What is the number?
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3+1/x *x = 7/x*x
3x+1 = 7
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x =2


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3 years ago
The figure below shows square ABCD inscribed on square PQRM on a coordinate plane. Which of the following expressions represents
vova2212 [387]
The hypotenuse of the triangle is given by:
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 Substituting values:
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 Clearing CB we have:
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 CB = \sqrt{ 4 + 16}  

 CB = \sqrt{20}  

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 Then, the perimeter of the triangle is:
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 P = 6 + 2 \sqrt{5}
 Answer:
 the perimeter of triangle BRC in units is:
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7 0
2 years ago
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A 22-foot ladder is leaning up against the side of a house. The ladder makes an angle of 77o with the ground. How far up the sid
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21.44 ft

Step-by-step explanation:

(sketch to understand)

use SOH/CAH/TOA rules to solve

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Step-by-step explanation:

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