Answer:
2/(x+7)
Step-by-step explanation:
x²+5x-14 factors as (x-2)(x+7)
SO - multiply the fraction on the right by x+7 (both top and bottom)
Then both have the same denominator (x-2)(x+7), and the 1 becomes x+7.
Then you combine the fractions to make ((3x+3)-(x+7))/(x-2)(x+7).
This becomes (2x-4)/(x-2)(x+7).
You can factor the 2 out of the numerator for 2(x-2).
You now have 2(x-2)/(x-2)(x+7)
The (x-2)’s cancel out and you are left with
2/(x+7)
You add 70 + 50 then you multiply it by 7.5 and you get, 900 gallons.
Answer:
9/40
Step-by-step explanation:
9/4 (5/6 - 11/15)
9/4 (1/10)
= 9/40
Yes 3/47 is a rational number because a rational number is any number that gives the results when divided one integer by another except ZERO.
3/47= 0.06383 so it is RATIONAL
Answer:
63
Step-by-step explanation:
To find the area of a trapezoid you have to use the formula
a+b/2 h
So we would substitute them
3 + 15 / 2 x 7
Which would equal
63
Hope this helps :)