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Rasek [7]
10 months ago
11

Which of the following phrases translates to m - 7?

Mathematics
1 answer:
Sindrei [870]10 months ago
6 0

m is an unknown number that is being decreased by 7.

OPTION A IS WRONG BECAUSE MATHEMATICALLY IT IS WRITTEN AS

7 - m

B IS WRONG BECAUSE IT MEANS

7 - m

C IS WRONG BECAUSE IT MEANS

7 - m

BUT D IS THE ANSWER BECAUSE IT MEANS

m - 7

SINCE m IS TREATED AS AN UNKNOWN NUMBER.

GOODLUCK!!!!

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What are the roots of the quadratic equation 2x2+7x+4=0? Select all that apply.
skad [1K]

Answer:

option A and B

x=\frac{-7+\sqrt{17}} {4}

and

x=\frac{-7-\sqrt{17}} {4}

Step-by-step explanation:

we have

2x^2+7x+4=0

The formula to solve a quadratic equation of the form

ax^{2} +bx+c=0

is equal to

x=\frac{-b\pm\sqrt{b^{2}-4ac}} {2a}

in this problem we have

2x^2+7x+4=0

so

a=2\\b=7\\c=4

substitute in the formula

x=\frac{-7\pm\sqrt{7^{2}-4(2)(4)}} {2(2)}

x=\frac{-7\pm\sqrt{17}} {4}

so

x=\frac{-7+\sqrt{17}} {4}

and

x=\frac{-7-\sqrt{17}} {4}

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2 years ago
Please help me and take a picture and show your work​
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Answer:

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3 0
2 years ago
Graph the equation on the coordinate plane.<br><br><br><br> y = 4x+4
Alla [95]

To graph the equation of the line, find the x-intercept and the y-intercept of the function

we have

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we know that

The x-intercept is the value of x when the value of y is equal to zero

The y-intercept is the value of y when the value of x is equal to zero

Step 1

<u>Find the x-intercept</u>

For y=0

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the x-intercept is the point (-1,0)

Step 2

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For x=0        

y=4*0+4

y=4

the y-intercept is the point (0,4)

Step 3

Graph the points and draw the line

see the attached figure

therefore

the answer in the attached figure

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3 years ago
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