The function y= -5(x-4)2 + 10 shows the daily profit (in hundreds of dollars) of a taco food truck, where x is the price of a taco (in dollars). Find
and interpret the zeros of this function.
Select two answers: one for the zeros and one for the interpretation.
A. Zeros: x= 4 and x = -4
B. Interpretation: The zeros are where the price of a taco is $0.00.
C. Zeros: x = 4 - = 2.58 and x = 4 + 2 = 5.41
D. Interpretation: The zeros are where the daily profit is $0.00

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answer: d.) the total number of protons and neutrons is 15

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(b) 240

step-by-step explanation:

first, we use the pythagorean formula using the given side lengths to find x. then we use x to find the side lengths. then we add the side lengths to find the perimeter.

pythagorean theorem formula:

a^2 + b^2 = c^2

(x - 20)^2 + (x - 40)^2 = x^2

x^2 - 40x + 400 + x^2 - 80x + 1600 = x^2

x^2 -120x + 2000 = 0

(x - 100)(x - 20) = 0

x - 100 = 0 or x - 20 = 0

x = 100 or x = 20

we see that the solution x = 20 must be discarded because it will give a negative side length and a side length of 0. the only valid solution is x = 100.

perimeter = sum of the lengths of the sides

perimeter = x + x - 20 + x - 40

perimeter = 3x - 60

replace x with 100.

perimeter = 3(100) - 60

perimeter = 300 - 60

perimeter = 240

  answer:

  write 548 as 500 + 40 + 8. multiply each addend by 5. then add the three products to get 2,740.