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Ostrovityanka [42]
3 years ago
8

PLEASE HELP ME!!!

Mathematics
2 answers:
rjkz [21]3 years ago
8 0

Answer: The answer is D. Hope this helps :)

Step-by-step explanation:

2(7) + 4(-1) = 10

_2(7) + (-1) = -15

Ivenika [448]3 years ago
6 0

Answer:

The answer is D

Step-by-step explanation: I solved by subsitution and found y=2x-15 So therefore 2x+4(2x-15)=10 and then x=7 and that was the only answer with7 as x but to check I did y=2(7)-15 and y=-1

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Answer:

<u>Hey there the correct to this is C. 750mm Squared.</u>

Step-by-step explanation:

All you really need to do is Add them and you times it then you get your answer from there.

6 0
3 years ago
It should take 5.22 minutes to clean a shower. You have 5 showers that need to be cleaned. How many minutes should it take for y
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This problem is simply multiplication as it is 5.22 minutes per shower. With this in mind, we can just multiply 5.22 by 5 and get our answer.

5.22
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4 0
4 years ago
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6 0
3 years ago
Read 2 more answers
line n passes through the points (-3, -7.5) and (2, -5). tahlia determined that the equation of line n is y = 0.5x. explain the
sweet-ann [11.9K]
<h2>Therefore Tahlia made mistake. Tahlia did not write -6 in her equation.</h2>

Step-by-step explanation:

Given , line n passes through the points (-3,-7.5) and (2,-5)

x_1 = -3 , y_1=-7.5   and     x_2 = 2 , y_2=-5

Therefore the slope of the line is (m)  =\frac{y_1-y_2}{x_2-x_1}

                                                        =\frac{-7.5+5}{2+3}

                                                        =\frac{2.5}{5}   =\frac{1}{2}

Therefore the equation of line is

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\Leftrightarrow y+7.5 =\frac{1}{2}(x+3)

\Leftrightarrow y+7.5 = 0.5x+1.5

\Leftrightarrow y = 0.5x+1.5 -7.5

\Leftrightarrow y = 0.5x -6

Therefore Tahlia made mistake. Tahlia did not write -6 in her equation.

5 0
3 years ago
I need help asap please
love history [14]

Answer:

k = 29

Step-by-step explanation:

5k - 3 + 9 + k = 180

6k + 6 = 180

6k = 180 - 6 = 174

k = 174/6 = 29

7 0
2 years ago
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