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2 years ago

Help please thank you!

Mathematics

1 answer:

erastova [34]2 years ago

3 0

Angle B is 105 degrees, or answer B

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What are the x-intercepts of 4x^ + 8x - 5

mojhsa [17]

Assuming the exponent is supposed to be "^2" your equation will read:

4x² + 8x - 5

It must set equal to y to be a valid function and the y must be set equal to zero to find x-intercepts.

4x² + 8x - 5 = 0
4x² - 2x + 10x - 5 = 0
2x(2x - 1) + 5(2x - 1) = 0

(2x + 5)(2x - 1) = 0

Set each binomial equal to zero.

2x + 5 = 0
2x = 0 - 5
2x = - 5
Divide both sides by 2
x = - 5/2

2x - 1 = 0
2x = 0 + 1
2x = 1
x = 1/2

Your x-intercepts are x = - 5/2, 1/2 or (- 5/2, 0) and (1/2, 0)

6 0

2 years ago

Find the slope of (-2,1),(-2,2)

Natalija [7]

Answer:

there is no slope its undefined

Step-by-step explanation:

4 0

2 years ago

59:19

Vesna [10]

nA.Replace ''the difference with subtraction

B.Replace''the number of serving '' with a variable x.

C.Replace ''four'' with 4.

Step-by-step explanation: .

8 0

9 months ago

I NEED HELP ON THIS WHOLE PAGE MAKE SURE YOUR ANSWER MAKES SENSE

Otrada [13]

1: 5,800

2: 112.5 (total weight, divide by 2, subtract 17 lb)

5: .8 (4 divided by 5)

6: $\frac{66}{100}$

7: 1,728

9: 9 inches

10: 1.2

Sorry I couldn't give you all of them :(

5 0

2 years ago

The length of each side of a square was decreased by 2 inches so the perimeter is now 49 inches. What was the original length of

aleksley [76]

The Original length of each side of square was 14.25 inches.

Step-by-step explanation:

Perimeter of a square is given by:

Perimeter = 4 * side

Let x be the original length of each side of square

decreasing 2 inch will mean

$x-2$

Perimeter of square after reducing 2 inches from each side

$4(x-2) = 49\\4x-8 = 49\\4x = 49+8\\4x = 57\\\frac{4x}{4} = \frac{57}{4}\\x = 14.25$

So,

The Original length of each side of square was 14.25 inches.

Keywords: Perimeter, square

Learn more about perimeter at:

#LearnwithBrainly

5 0

3 years ago