3 years ago

Solve the system by substitution 10x-2y=-16 and y=3x

Mathematics

1 answer:

lesantik [10]3 years ago

5 0

The answer would be x=-4.

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The time required to finish a test in normally distributed with a mean of 70 minutes and a standard deviation of 10 minutes. Wha

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Note that 60 minutes is 1 standard deviation away from the mean and from recalling the 68-95-99.7 rule, the area that will remain is (100 - 68) = 32%. However, we only want the leftmost portion of this area, so the answer is 32%/2 = 16%.

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Find the solution to the equations. 2х-у=-3 х+у=0 0,0 -1,1 1,-1

kobusy [5.1K]

It’s 0,0. The correct answer!

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Read 2 more answers

A+2/a-5÷a+1/a2-8a+15

krok68 [10]

For $A+\frac{2}{a}-\frac{5}{a}+\frac{1}{a^2}-8a+15$

Combine the fractions $\frac{2}{a} - \frac{5}{a} \ \textgreater \ \mathrm{Apply\:rule}\:\frac{a}{c}\pm \frac{b}{c}=\frac{a\pm \:b}{c} \ \textgreater \ \frac{2-5}{a}$

$\mathrm{Subtract\:the\:numbers:}\:2-5=-3 \ \textgreater \ \frac{-3}{a}$

$\mathrm{Apply\:the\:fraction\:rule}:\ \frac{-a}{b}=-\frac{a}{b} \ \textgreater \ -\frac{3}{a}$

Therefore our final answer is $A-\frac{3}{a}+\frac{1}{a^2}-8a+15$

Hope this helps!

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3 years ago

A store sells T-shirts $10 each and jeans for $20 a pair. Anna spends $150 for T-shirts and jeans. she buys x T-shirts and y pai

galben [10]

10x+20y=150 is the equation I don't quite understand how she would have money left because she spend $150 for her t-shirts and jeans.

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3 years ago

List the angles of the triangle in order from largest to smallest.

alina1380 [7]

Answer: A, C, B

Step-by-step explanation:

Because "a" has 8 across

And "c" has 10 across

and "b" has 13 across

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3 years ago