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Andrews [41]
3 years ago
7

The point (2, -1) is on the line 2x + y = 5.

Mathematics
1 answer:
malfutka [58]3 years ago
3 0

Answer:

No

Step-by-step explanation:

Substitute by x = 2 and y = - 1

You will get 2*2 + (-1) = 3 not 5

Then it doesn't lie

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A student's grade for the four quarters are 95, 83, 91, and 85. What does the student need to earn on the final exam to have an
gulaghasi [49]

Answer:

The least score the student can get is 71 to get an overall B average at the end of the year.

Step-by-step explanation:

Let the score she needs to get be = x

We now have to take the mean of all the five subjects <em>(including x)</em> and equate it to the least score she can have to get a B grade.

Let us take the least score the student needs to get a B grade to be 85

Mean of all 5 scores =

\frac{95+83+91+85+x}{5}=85

\frac{354+x}{5} =85

354+x = 425

x = 71

The least score the student can get is 71 to get an overall B average at the end of the year.

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3 years ago
What is an equation that models the sequence 400, 200, 100, 50, ?
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400 / 2 = 200
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3 years ago
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bearhunter [10]

Answer:

112.491 = one hundred twelve and four hundred ninety-one

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Step-by-step explanation:

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2 years ago
10. Petrolyn motor oil is a combination of natural oil and synthetic oil. It contains 3 liters of natural oil for every 4
jeyben [28]

you have the ratio of natural:synthetic so;

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7 0
2 years ago
Which lines are parallel?
Reptile [31]

Answer:

Lines 'p' and 'q' are parallel I believe!

Step-by-step explanation:

They are the only two lines relating to angles 8 and 11 of the three listed pairs.

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