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nata0808 [166]
3 years ago
13

Let b = 10. What is the value of 6b – 21?

Mathematics
2 answers:
IrinaVladis [17]3 years ago
5 0
6(10)-21
60-21
39 is the answer.
Dimas [21]3 years ago
4 0
Substitute the answer for b in the equation.

=6b - 21
=6(10) - 21
=60 - 21
=39

Hope this helps! :)
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Step-by-step explanation:  5 23  8 03

the lenght of the longer leg of a right triangle is 9 ft longer than the lenght of the shorter leg x. The hypotenuse is 9 ft shorter than twice the lenght of the shorter leg.

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longer leg     = x + 9

hypotenuse  =  2x - 9

Pythagorean theorem  =    a² + b²  = c²

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longer leg     = 36

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divided all the values by 9 and you get a 3, 4, 5  right triangle, so the answer checks correct  

           

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