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STatiana [176]
3 years ago
13

HELP IM FAILING MATH OOOOFFFF

Mathematics
1 answer:
meriva3 years ago
4 0

The point-slope form:

y-y_1=m(x-x_1)\\\\m=\dfrac{y_2-y_1}{x_2-x_1}

We have the points (-4,\ -1) and \left(\dfrac{1}{2},\ 3\right).

Substitute:

m=\dfrac{3-(-1)}{\frac{1}{2}-(-4)}=\dfrac{4}{4\frac{1}{2}}=\dfrac{4}{\frac{9}{2}}=4\cdot\dfrac{2}{9}=\dfrac{8}{9}\\\\y-(-1)=\dfrac{8}{9}(x-(-4))\\\\y+1=\dfrac{8}{9}(x+4)

The standard form: Ax + By = C

y+1=\dfrac{8}{9}(x+4)\qquad\text{multiply both sides by 9}\\\\9y+9=8(x+4)\qquad\text{use distributive property}\\\\9y+9=8x+32\qquad\text{subtract 9 from both sides}\\\\9y=8x+23\qquad\text{subtract 8x from both sides}\\\\-8x+9y=23\qquad\text{change the signs}\\\\\boxed{8x-9y=23}

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3 years ago
What is 22% of 45<br><br><br><br> what is 32.5% of 250
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Answer:

22%*45=

(22:100)*45 =

(22*45):100 =

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32.5%*250=

(32.5:100)*250 =

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7 0
2 years ago
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Nikitich [7]

Answer:

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hope this helps.

6 0
3 years ago
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Pls help im really bad at math no links pls​
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Answer:

-\frac{1}{2}

Step-by-step explanation:

-\frac{5}{6} +\frac{6}{18}

-\frac{5}{6} +\frac{2}{6}        reduced

\frac{-5+2}{6}            transformed the expression to make it easier

-\frac{3}{6}               add

-\frac{1}{2}               reduce

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2 years ago
Solve this problem using the proper formula. A carpenter is building a bookcase the perimeter of the top is 108 in. What length
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Assuming the length is y and the width is x
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Length = 46 inches
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3 years ago
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