Answer:
a
Step-by-step explanation:
We know that
area of rectangle A=L*W
A=L*W------> solve for W
W=A/L
case 1) L=5 cm A=31.25 cm²
W=A/L-----> 31.25/5----> W=6.25 cm
the answer part 1) is W=6.25 cm
case 2) L=9.25 cm A=55.5 cm²
W=A/L----->55.5/9.25----> W=6 cm
the answer part 2) is W=6 cm
case 3) L=7.5 cm A=48.75 cm²
W=A/L-----> 48.75/7.5----> W=6.5 cm
the answer part 3) is W=6.5 cm
case 4) L=5 cm A=44 cm²
W=A/L-----> 44/5----> W=8.8 cm
the answer part 4) is W=8.8 cm
You can do any problem first because they will all come out to be the same answer. The property that I am going to be using for all of them is commutative property of multiplication. -5*1=-5 is the first step you could do. -5*4=-20, it doesn't matter is you skip a number or not it will be okay. -20*11=-220. You can start with any one and the answer will still be -220.
I think (jk) (x) means j times k
(jk) (x) = -7x(9 - 2x) //Using Distributive Property.
(jk) (x) = -63x + 14x^2 = 14x^2 - 63
//Hope it helps.
Answer:
They can earn $665,370 more. So, d.
64,473 - 42,294 = 22,179
22,179 * 30 = 665,370