The answer is in hundred-liloud
mentally calculate the following products. use the rule for
decimal multiplication to write an equation in which the
decimal point is written in the correct location.
a. (-0..1) b. (0.03)-0.02) c. (0.7)(0.4)
d. stacey said, “stephanie, look at my answer to the last
problem, 0.7.0.4=0.28. usually when i multiply, i get a
bigger answer than the numbers i start with. twenty-eight-
hundredths, 0.28, is less than either 0.4 or 0.7. i must have
made a mistake.”
stephanie responded, "well, one-half times one-half is one-fourth, and one-
fourth is less then one-half. i think when you multiply by a fraction or
decimal less than one, you get less than you started with."
write a sentence or two about who you think is correct and why.

(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

52 \43 i don't know this i tried

write out the polynomial, with leading coefficient 1:

y = 1 (x+2)^1 (x-7)^1 (x-5)^2

next time, share the answer choices.   .