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gogolik [260]
3 years ago
11

What are the x-intercepts of the equation y=4x^2-16

Mathematics
2 answers:
nekit [7.7K]3 years ago
6 0

Answer:

I love algebra anyways  

the ans is in the picture with the steps  

(hope it helps can i plz have brainlist :D hehe)

Step-by-step explanation:

jenyasd209 [6]3 years ago
3 0

Answer:

x = ± 2

Step-by-step explanation:

To find the x- intercepts let y = 0 , that is

4x² - 16 = 0 (add 16 to both sides )

4x² = 16 ( divide both sides by 4 )

x² = 4 ( take the square root of both sides )

x = ± \sqrt{4} = ± 2

The x- intercepts are x = - 2 and x = 2

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nikdorinn [45]

Answer: D

Step-by-step explanation:

7 0
3 years ago
Ben needs 1 3/8 feet of fabric to make one banner. How many banners can he make from 4 1/2 yards of fabric?
skelet666 [1.2K]

Answer:

x = 9.818

x≈10

The number of banners that can be made are 10

Step-by-step explanation:

We can use the knowledge of proportion to solve this.

First we need to convert yard to feet.

  1  yard      = 3 foot

4 1/2 yard    = y

cross-multiply

y =  4 1/2  ×  3

    =9/2  ×   3

y = \frac{27}{2} feet

This implies 4 1/2 yards =  \frac{27}{2} feet

Let x be the numbers of banners needed to make from 4 1/2 yards of fabric.

1 3/8 feet  = 1 banner

\frac{27}{2}  feets    =    x

cross multiply

1 3/8 × x =  \frac{27}{2}

\frac{11x}{8}  =  \frac{27}{2}

cross-multiply

22x = 216

Divide both-side of the equation by 22

22x/22 = 216/22

x = 9.818

x≈10

The number of banners that can be made are 10

3 0
3 years ago
Point W is located at (-2,3) on a coordinate plane. Point W is reflected over the x-axis to create point w'. Point W' is then re
aniked [119]

ANSWER

W''(2, - 3)

EXPLANATION

The given point bas coordinates

W(-2,3).

The mapping for reflection over the x-axis is

(x,y)\to(x, - y)

W(-2,3)\to \: W'(-2, - 3)

This point W'(-2,-3) is then reflected over the y-axis.

The mapping for reflection over the y-axis is

(x,y)\to (-x, y)

W'(-2,-3)\to \: W''(2, - 3)

5 0
3 years ago
The mean of (x + 5), (x + 3), (2x + 1) and (x - 6) is 12. What is the<br> value of x?
navik [9.2K]

Answer:

x=9

Step-by-step explanation:

answers too short so cigdtusrysyksrytf7hiuf6s4td6figiio

7 0
2 years ago
543.3 + 3..28 help me
Dahasolnce [82]

Answer:546.58

Because if u add it all together it gives u that answer

5 0
3 years ago
Read 2 more answers
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