3 years ago

Which of the following represents the multiplicative inverse of -90?

Mathematics

2 answers:

Fynjy0 [20]3 years ago

6 0

I think the answer is B

storchak [24]3 years ago

4 0

B because -90/1 and inverse is -1/90

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Step-by-step explanation:

Equations

In a right triangle, Pythagora's Theorem is satisfied. Being a the hypotenuse, b and c the legs of the triangle, then:

$a^2=b^2+c^2$

Let's call

x=the shorter leg of the triangle

The longer leg is 1 cm longer than the shorter leg, thus:

x+1=the longer leg.

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Operating:

$25=x^2+x^2+2x+1$

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$2x^2+2x+1=25$

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$x^2+x-12=0$

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Thus, the solution is:

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