You have to square the binomial.
(x^3 + 4y) (x^3 + 4y)
Using FOIL:
x^9 + 4(x^3)y + 4(x^3)y + 16y^2
x^9 + 8(x^3)y + 16y^2
You could also use the formula: (a+b)^2 = (a^2 + 2ab + b^2).
Well 106 divided by 7 is 15 so 15 times 7 is 106
It’s in the tens place, 50
Answer:
Below
Step-by-step explanation:
● Orders of 8 gallons or more can be modeled as: x》 8
● For each gallons in the situation above the company charges 11.99 per gallon so: 11.99x
● For orders that are less than 8, the comapny charges 14.78 per gallon
● => 14.78x for x < 8
So the function that represent the situation is the second one
R = k / t where r = speed, t = time and k is a constant
Given r = 66 when t = 66 so we have
66 = k / 66
so k = 66^2 = 4356
so when t = 55
speed r = 4356 / 55 = 79.2 mph
