MATHEMATICS HIGH SCHOOL

3x+8y=-1
-3x+y=-17

Solve with addition method and get the points for x and y

Answers

Answer 1
Answer: 3x+8y=-1 \n\underline{-3x+y=-17} \n8y+y=-1-17 \n9y=-18 \ny=(-18)/(9) \ny=-2 \n \n-3x+y=-17 \n-3x-2=-17 \n-3x=-17+2 \n-3x=-15 \nx=(-15)/(-3) \nx=5 \n \n\boxed{(x,y)=(5,-2)}
Answer 2
Answer: \left \{ {{3x+8y=-1} \atop {-3x+y=-14}} \right. \n+-------\nadd\ both\ equations\n\n9y=-15 \ \ \ | divide\ by\ 9\n\ny=-(15)/(9)=-(5)/(3)\n\n3x=-1-8y\ \ \| divide\ by\ 3\n\nx=(-1-8y)/(3)=(-1-8*(-(5)/(3)))/(3)=(-1+(40)/(3))/(3)=(37)/(3)*(1)/(3)=(37)/(3)

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What is the sum of the quotients of 25x^2/5x and the quotient of 8x^2/x

Answers

If you would like to solve (25 * x^2) / (5 * x) + (8 * x^2) / x, you can calculate this using the following steps:

(25 * x^2) / (5 * x) + (8 * x^2) / x = 5 * x + 8 * x = 13 * x

The correct result would be 13 * x.

What is 3 root of − 1331 end root ?

Answers

∛-1331
∛-11 · (-11) · (-11)
∛-11∛-11∛-11
-11

okay i got the first one down what about this one GUYS PLEASE HELP BECAUSE I HAVE TO BE SOMEWHERE AND IF I DONT GET THIS THEN I CANT GO PLEEEAASEE REEEEEEE

Answers

Answer:

6

Step-by-step explanation:

The product of 7 and 0.04 is 0.28.

[True]

or

[False]

Answers

The product of 7 and 0.04 is 0.28=true

Answer:

the answer is true

Estimate the sum by rounding each number to the nearest half or whole.

2 1/2+ 5 5/8

Answers

I believe the answer should be 9. 

Triangle PQR is right angle at Q. |PQ| = 3a cm and |QR| =4a cm. Determine |PR| in terms of a

Answers

A^2 + B^2=C^2 Pythagorean’s Theorem

(3a)^2 + (4a)^2 = C^2

9a^2 + 16a^2 = C^2

a^2(9+16) = C^2

a^2(25) = C^2

sqrt ((a^2(25)) = sqrt (C^2)

5a=C=|PR|

shortcut would have been to recognize a 3-4-5 triangle
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