The first few steps in deriving the quadratic formula are shown
Which best explains why is not added to the left
side of the equation in the last step shown in the table?
Use the subtraction property of
eguan
Factor of a
Find half of the wave and Souare
it to determine the constant of the
perfect square trinomail
M
The term is added to the right side of the
equation, so it needs to be subtracted from the left
side of the equation to balance the sides of the
equation
The distributive property needs to be applied to
determine the value to add to the left side of the
equation to balance the sides of the equation
O The term needs to be converted so it has a
common denominator before adding it to the left side
of the equation to balance the equation
The square root of the term needs to be found
herre adding them to the left side of the nation

d

step-by-step explanation:

given

y + 3 = - 4(x - 2) ← distribute the parenthesis

y + 3 = - 4x + 8 ( subtract 3 from both sides )

y = - 4x + 5 → d

step-by-step explanation:

coldest temperature they recorded add me europa2433

europa2433

answer:

your answer is: c. 196 7/8 in^3.

(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