= Let Martina's cousin's age be = n
= Let her age be = n+12
After four years,
Cousin's age = n+4
Her age = n+12+4=n+16
But according to the question her age = 3(n+4) = 3n+12
Thus,
3n+12=n+16
3n-n=16-12
2n=4
n=4/2
Thus ,
Her cousin's present age = n = 2
Her cousin's present age = n = 2Her present age = n+12 = 2+12=14
Base = x^2 + 5x + 4
volume = base × height
volume = ( x^2 + 5x + 4 ) × 7
volume = 7x^2 + 35x + 28
A, the -4 x 6 = 24 +5 = 29 so -29/6 and the -3/5 stays the same. You just have to put the mixed fraction into a improper fraction. That should be the answer.
You can do 144 times 1/8, which is the same thing as <span>144÷8.
The answer is 18.</span>
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