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2 years ago

What number should be added to both sides of the equation to complete the square? x^2+ 8x = 4

Mathematics

1 answer:

Sonbull [250]2 years ago

3 0

Answer:

Step-by-step explanation:

use the formula (b/2)^2 to find what number to add to each side of the equation

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Through(-2,-3); parallel to 3x+2y=5

Vilka [71]

Step-by-step explanation:

Hey there!

Firstly find slope of the given equation.

Given eqaution is: 3x + 2y = 5.......(i)

Now;

$slope(m1) = \frac{ - coeff. \: of \: x}{coeff. \: of \: y}$

$or \: m1 = \frac{ - 3}{2}$

Therefore, slope (m1) = -3/2.

As per the condition of parallel lines,

Slope of the 1st eqaution (m1) = Slope of the 2nd eqaution (m2) = -3/2.

The point is; (-2,-3). From the above solution we know that the slope is (-3/2). So, the eqaution of a line which passes through the point (-2,-3) is;

(y-y1) = m2 (x-x1)

~ Keep all values.

$(y + 3) = \frac{ - 3}{2} (x + 2)$

~ Simplify it.

$2(y + 3) = - 3x - 6$

$2y + 6 = - 3x - 6$

$3x + 2y + 12 = 0$

Therefore, the eqaution of the line which passes through the point (-2,-3) and parallel to 3x + 2y= 5 is 3x + 2y +12 =0.

Hope it helps...

8 0

2 years ago

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The polynomial −16t^2+550 gives the height of a ball t seconds after it is dropped from a 550-foot-tall building. Find the heigh

zhenek [66]

Answer:

486 feet

Step-by-step explanation:

h = -16t² + 550

h = -16(2)² + 550

h = 486

7 0

2 years ago

Evaluate the exponential function f(x)=(1/2)^x. Which value completes this table?

zheka24 [161]

0.5^-1=2
the answer is 2

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2 years ago

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A 9-inch diameter pizza has 30 calories per square inch. About how many calories are in the entire pizza?

Yuliya22 [10]

Answer:

113.04 calories

Step-by-step explanation:

please mark answer as brainlest

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2 years ago

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What is the expanded form of 3×(x+3)^2

saul85 [17]

3x(x+3)^2
3x(x^2 + 6x + 9)
= 3x^3 + 18x^2 + 27x

answer
3x^3 + 18x^2 + 27x

7 0

2 years ago