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Karo-lina-s [1.5K]

3 years ago

15

you bought a magazine for $5 and four erasers. you spent a total of $25. How much did each eraser cost ? show your work please t

o how u got your answer

1 answer:

algol133 years ago

6 0

25-5 = 20

20/4 = 5

each eraser cost $5

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You go to a restaurant with a friend. You purchase the items shown in the table below. There is a 7% sales tax and you wish to l

DENIUS [597]

Answer:

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3 years ago

The factorization of x^2 + 3x-4 is modeled with algebra tiles

o-na [289]

Answer:

(x-1) (x+4)

Step-by-step explanation:

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5 0

3 years ago

Find the x-intercepts of the parabola with vertex (5,-4) and y-intercept (0,96). Write your answer in this form: (x1,y1),(x2,y2)

lesya692 [45]

Answer:

The x-intercepts are

(x1,y1)=(4,0)

(x2,y2)=(6,0)

Step-by-step explanation:

we know that

The equation of the given parabola is

$(y-k)=a(x-h)^{2}$

we have

the vertex is the point (5,-4)

substitute

$(y+4)=a(x-5)^{2}$

The y-intercept is the point (0,96)

substitute and solve for a

$(96+4)=a(0-5)^{2}$

$100=a(25)$

$a=100/25=4$

The equation of the vertical parabola is equal to

$(y+4)=4(x-5)^{2}$

Find the x-intercepts

Remember that

The x-intercepts are the values of x when the value of y is equal to zero

For y=0

$4=4(x-5)^{2}$

Simplify

$1=(x-5)^{2}$

Rewrite

$(x-5)^{2}=1$

square root both sides

$(x-5)=(+/-)1$

$x=(+/-)1+5$

$x=(+)1+5=6$

$x=(-)1+5=4$

therefore

The x-intercepts are

(x1,y1)=(4,0)

(x2,y2)=(6,0)

4 0

3 years ago

Please help I will give a brainless or brainly

enot [183]

Answer:

2x - 12 + 6 = 4x - 4

2x- 6 = 4x - 4

-6 +4 = 4x - 2x

-2 = 2x

x= -2/2

x = -1

5 0

2 years ago

Read 2 more answers

What's is the answer to (-5)^4

Dmitriy789 [7]

Answer:

625

Step-by-step explanation:

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8 0

3 years ago