3 years ago

The expression in the form 9n

Mathematics

2 answers:

avanturin [10]3 years ago

7 0

9 ^2

So it’s 9 squared

san4es73 [151]3 years ago

4 0

9to the power of 2 because if you divide two exponents subtract the top and bottom ones 7-5=2

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3 years ago

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How do you simplify that question? For algebra 1.

motikmotik

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3 years ago

By driving 8 mph faster than Bob, John can make a 230 mile trip in one half hour less. How fast does Bob drive on the trip? Roun

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Step-by-step explanation:

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According to question, we get that

$\dfrac{230}{x}-\dfrac{230}{x+8}=\dfrac{3}{2}\\\\230\dfrac{x+8-x}{x(x+8)}=\dfrac{3}{2}\\\\\dfrac{230\times 8}{x^2+8x}=\dfrac{3}{2}\\\\\dfrac{1840}{x^2+8x}=\dfrac{3}{2}\\\\1840\times 2=3x^2+24x\\\\3680=3x^2+24x\\\\3x^2+24x-3680=0\\\\x\approx 56.8\ km/hr$

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3 years ago