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Dvinal [7]
2 years ago
14

PLEASE HELP ME =(((((((((((((((((((((((

Mathematics
1 answer:
artcher [175]2 years ago
7 0

Answer:

The answer is

y =  - 5x  - 2

Step-by-step explanation:

❃Incase you forgot what the linear equation formula is ☟

y = mx + b

❃Incase you also forgot, The is what the slope formula is ☟

m = \frac{y_2 - y_1 }{x_2 - x_1}

➊ First: We are going to be solving for the slope.

m = \frac{  - 2 - 3}{0 - ( - 1)} = \frac{  - 5}{ \: \: \: 1} =  - 5

➋Second: We find the y-intercept.

y = mx + b \\ 3 = - 5( - 1) + b \\ 3 = 5 + b \\ \frac{  - 5 =  - 5 \ \ \:  \: \: \:  \: \: }{ - 2 = b}

➌Third: Plug in.

y =  - 5x - 2

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Linear system word problem
soldi70 [24.7K]
Good job, you got the equations! XD

I'll just help you solve

Multiply the 2nd row by 9
<span>9x+9y=117</span>
<span><span><span>9x+27y=207

</span></span></span>Subtract the 2nd row from the 1st row
<span><span><span>−18y=−90
</span></span></span>Divide both sides by <span>−18</span>
<span><span><span>y=<span><span>−90/</span><span>−18
</span></span></span></span>Two negatives make a positive
<span><span>y=<span><span>90/</span><span>18</span></span></span><span>​​</span></span><span>
y = 5

Substitute 5 into an equation
9x+9(5)=11<span>7
</span>9x+45=11<span>7
</span>Subtract <span>45</span> from both sides
<span><span><span>9x=117−45

</span></span></span>9x=7<span>2
</span>Divide both sides by <span><span>9</span></span>
x = ___

Hope this will help​​</span></span>

3 0
3 years ago
The length of a rectangle is 2 cm longer than its width. if the perimeter of the rectangle is 40 cm , find its area.
rusak2 [61]

width = w

 length = w +2

perimeter = 2L + 2w

40 = 2(w+2) + 2w

40 = 2w+4 +2w

40 = 4w+4

36=4w

w=36/4 = 9

with = 9

length = 9+2 = 11


 area = l x w = 9*11 = 99 square cm

4 0
3 years ago
The mass of a grain of sand is about 103 gram.
KatRina [158]

1 grain = 103g

2kg = 2000g

grains = 2000g/103g = 19.417

Answer:

About 19.417 grains

3 0
3 years ago
What is the purpose of using fraction strips and a 1srip
love history [14]
the one strip is a whole fraction strip and the others are just part of the whole
8 0
3 years ago
You received 1⁄3 pound of candy from your grandmother, 1⁄2 pound of candy from your sister, but your best friend ate 1⁄5 pound o
OverLord2011 [107]
Give them the same denominator.
19/30 is what you have left
3 0
3 years ago
Read 2 more answers
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