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3 years ago

Does anyone know the whole answers to Lesson 2: Semester A Exam, please!! 50 POINTS

Mathematics

2 answers:

guajiro [1.7K]3 years ago

8 0

Answer:

What school do you go to and maybe I can help?

Step-by-step explanation:

SSSSS [86.1K]3 years ago

4 0

Answer:

can i help you study?

Step-by-step explanation:

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Simplify: 3r+n²-r+5-2n+2

lutik1710 [3]

3r+n2−r+5−2n+2=3r+n2+−r+5+−2n+2=3r+n2+−r+5+−2n+2=(n2)+(−2n)+(3r+−r)+(5+2)=n2+−2n+2r+7
=n2−2n+2r+7

7 0

3 years ago

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Select ALL the correct answers,

Margaret [11]

Answer:

The second and third

Step-by-step explanation:

4 0

3 years ago

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Use an equation to find the value of k so that the line that passes through the given points has the given slope. (

shutvik [7]

The formula of a slope:

$m=\dfrac{y_2-y_1}{x_2-x_1}$

We have the points (4, -4) and (k, -1) and the slope m = 34.

Substitute:

$\dfrac{-1-(-4)}{k-4}=34\\\\\dfrac{3}{k-4}=\dfrac{34}{1}\qquad|\text{cross multiply}\\\\34(k-4)=3\qquad|\text{use distributive property}\\\\34k-136=3\qquad|+136\\\\34k=139\qquad|:34\\\\k=\dfrac{139}{34}$

3 0

3 years ago

HELP!!! PLZZ THIS IS SO FRICKIN HARD!

krek1111 [17]

Answer:

14.3%

Step-by-step explanation:

1/7=0.142857142857

round that to the nearest tenth and that is 0.143

make it a percentage and it is 14.3%

8 0

2 years ago

Find the point-slope equation for

mars1129 [50]

Answer:

y-24=m(x--4)

Step-by-step explanation:

point slope form:

y-y₁=m(x-x₁)

1) find the slope or "m" first:

slope formula: (y2-y1)/(x2-x1)

(-53-24)/7+4

-77/11=-7

slope=-7

y-y₁=-7(x-x₁)

y1=24

x1=-4

y-24=m(x--4)

hope this helps!

8 0

3 years ago