3 years ago

What number must i add to complete the square x^2+8x=-3

Mathematics

1 answer:

Sonja [21]3 years ago

7 0

Answer:

Step-by-step explanation:

(b/2)^2

(8/2)^2 = (4)^2 = 16

(x^2+8x+16) = -3+16

(x+4)^2 = 13

so on so forth, but basically you add 16 which completes the square

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mrs_skeptik [129]

Answer:

1/2

Step-by-step explanation:

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$\frac{2}{4}$ = $\frac{3}{6}$ Same ratio. Both reduce to $\frac{1}{2}$

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3 years ago

When 1600 is increased by 20% and the resulting number is decreased by y% the answer is 1536. Find the value of y?

svet-max [94.6K]

100% = 1600
120% = 1920

1920/120 = 1536/y
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3 years ago

What is the distance between two points(2,-6)(-7,1)

Ilia_Sergeevich [38]

Answer:

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Step-by-step explanation:

Find the distance in the x-direction between the x-components: 2 - (-7) = 9.

Similarly: between the y-components: 1 - (-6) = 7

Apply the Pythagorean Theorem: 9^2 + 7^2 = d^2, where d is the desired distance:

81 + 49 = d^2, or d^2 = 130

The distance d is approximately √130 ≈ 11.4

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3 years ago

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A flare was launched straight up from the ground with an initial velocity of 176ft/s and returned to the ground after 11 s.

posledela

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Step-by-step explanation:

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3 years ago

Laketown had 215 inches of snowfall last year, but only 155 inches this year. What was the percent decrease in snowfall for Lake

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3 years ago

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