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Ivanshal [37]
3 years ago
14

Which is an equation of a line with an x-intercept of -4 and a y-intercept of 3? A. Y= 3/4x-4 B. y=3/4x+3 C. Y=-3/4x-4 D. Y=-3/4

x+3
Mathematics
1 answer:
bonufazy [111]3 years ago
7 0

Answer:

B.  y = 3/4x + 3.

Step-by-step explanation:

Using  the general form y = mx + c where m = the slope and c the y-intercept we have

Y = mx + 3

The  x intercept is at (-4, 0) ( that is x = -4 when y = 0), so:

0 = m(-4) + 3

-4m = -3

m = 3/4

The answer is y = 3/4 x + 3.

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the total height of the stack is 2.25
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What is the perimeter?
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6 0
3 years ago
It takes Fred 32 minutes to type and spell check 5 pages of a manuscript. Find how long it takes
sveta [45]

Answer:

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6 0
2 years ago
Marco is 8 years younger than his brother Paolo. If their product of their ages is 105, how old is Marco? plz help
Nina [5.8K]

Answer:

Marco's age is 7 years old

Step-by-step explanation:

Let

x ----> Marco's age

y ----> Paolo's age

we know that

x=y-8 ----> y=x+8 ----> equation A

xy=105 ----> equation B

substitute equation A in equation B

x(x+8)=105

x^2+8x-105=0

Solve the quadratic equation

The formula to solve a quadratic equation of the form

ax^{2} +bx+c=0

is equal to

x=\frac{-b(+/-)\sqrt{b^{2}-4ac}} {2a}

in this problem we have

x^2+8x-105=0

so

a=1\\b=8\\c=-105

substitute in the formula

x=\frac{-8(+/-)\sqrt{8^{2}-4(1)(-105)}} {2(1)}

x=\frac{-8(+/-)\sqrt{484}} {2}

x=\frac{-8(+/-)22} {2}

x=\frac{-8(+)22} {2}=7

x=\frac{-8(-)22} {2}=-15

Remember that the solution cannot be a negative number

so

The solution is x=7

therefore

Marco's age is 7 years old

4 0
3 years ago
Michael is paid $9 per hour to work at the movie theater and $7 per hour when he helps his aunt at her bakery. Michael cannot wo
evablogger [386]

if he works at the theater he can make $288 in 32 hours, if he works at his aunts he can make $224 in 32 hours. he should work at the theater to meet his goal.

I really hope this helps

4 0
3 years ago
Read 2 more answers
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