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4 years ago

Find the value of c to complete the square: x^2+8x+c

Mathematics

1 answer:

Fed [463]4 years ago

3 0

C=16, then you would solve to get (x+4)(x+4) which is (x+4)^2

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Mrrafil [7]

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4 years ago

2 Question help

Travka [436]

Step-by-step explanation:

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3 years ago

Read 2 more answers

(-6,8); perpendicular to y = -3/2x -1

UNO [17]

Answer:

$y = \frac{2}{3} x + 12$

Step-by-step explanation:

$y = - \frac{3}{2} x - 1$

The gradient of a line is the coefficient of x when the equation of the line is written in the form of y=mx+c.

Thus, gradient of given line= $- \frac{3}{2}$ .

The product of the gradients of perpendicular lines is -1.

(Gradient of line)(-3/2)= -1

Gradient of line

$- 1 \div ( - \frac{3}{2} ) \\ = - 1( - \frac{2}{3} ) \\ = \frac{2}{3}$

Substitute m= $\frac{2}{3}$ into y=mx+c:

$y = \frac{2}{3} x + c$

To find the value of c, substitute a pair of coordinates.

When x= -6, y= 8,

$8 = \frac{2}{3} ( - 6) + c \\ \\ 8 = - 4 + c \\ c = 8 + 4 \\ c = 12$

Thus, the equation of the line is $y = \frac{2}{3} x + 12$ .

7 0

3 years ago

A little monkey had some peaches. On the first day he decided to keep ½ of his peaches. He gave the rest away. Then he ate one.

Hunter-Best [27]

Answer:

Step-by-step explanation:

Working backwards

1+1 then x2 is 4

4+1 then x2 is 10

10+1 then x2 is 22

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2 years ago

The transversal is crossing two parallel lines. Find the value of x.

ira [324]

Answer:

x=32

Step-by-step explanation:

5x+20=180 can be used to solve this problem because those two angles are supplementary

5 0

3 years ago