All categories

2 years ago

What number must you add to complete the square? x^2+6x=23

Mathematics

1 answer:

Shalnov [3]2 years ago

8 0

Answer:

Step-by-step explanation:

using the formula (b/2)^2 you will divide 6 by 2 and square it. you will get 9. if you add 9 to the left side, you would have to add it on the right side as well (23+9=32). your answer should look like x^2+6x+9=32

You might be interested in

Find the slope of the line that passes through (-3,-1) and (-5,4)

tester [92]

Line is Passing through the Points (-3 , -1) and (-5 , 4)

Slope of a Line Passing through two points (x₁ , y₁) and (x₂ , y₂) is given by :

$\heartsuit\;Slope(m) = \frac{y_1 - y_2}{x_1 - x_2}$

here x₁ = -3 and x₂ = -5 and y₁ = -1 and y₂ = 4

$\heartsuit\;Slope(m) = \frac{-1 - 4}{-3 + 5} = \frac{-5}{2}$

3 0

3 years ago

HELP IM TAKING THE TEST IN CLASSSS

Flura [38]

Answer: the 1 one

Step-by-step explanation:

5 0

2 years ago

Calculate the gradient of BD

den301095 [7]

Step-by-step explanation:

part 1 : explaining how to get the coordinates of B

part 2 : the gradient of BD

7 0

2 years ago

For a rectangle with length of

AveGali [126]

Answer:

2x+5

Step-by-step explanation:

Formula for the perimeter of a reactangle= 2(l+b)

So,

2(l+b) = 10x+18

2(3x+4 + b) = 10x+18

Rearrange and solve

3x+4+b = 5x+9

b = 5x+9 - 3x - 4

b = 2x+5

Thus the measurement of the width = 2x+5

Hope this helps

6 0

2 years ago

A teacher wants to give three markers to each of her 25 students. Markers come in packages of eight. How many packages of marker

Whitepunk [10]

3*25=75
so the question is 75/8
you would 10 packages since
8*8=64
8*9=72
but 8*10=80 is enough, remainder 5

5 0

3 years ago

Read 2 more answers