3 years ago

What is distance between -8 and 3 on the number line

Mathematics

2 answers:

Anastasy [175]3 years ago

6 0

Answer:

Step-by-step explanation:

You do -8 - 3 and you get 11

Anna11 [10]3 years ago

5 0

Answer:

Step-by-step explanation:

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1) 5x-2y=4. 2) 3x-5y=13 x-2y=5 3x+y=9

Natali [406]

$\left\{\begin{array}{ccc}5x-2y=4\\3x+y=9&/\cdot2\end{array}\right\\+\left\{\begin{array}{ccc}5x-2y=4\\6x+2y=18\end{array}\right\\----------\\.\ \ \ \ \ 11x=22\ \ \ \ /:11\\.\ \ \ \ \ \ \ x=2\\\\3\cdot2+y=9\\6+y=9\\y=9-6\\y=3\\\\Answer:x=2;\ y=3$

$\left\{\begin{array}{ccc}3x-5y=13\\x-2y=5\end{array}\right\\\left\{\begin{array}{ccc}3x-5y=13\\x=2y+5\end{array}\right\\\\substitute:\\\\3(2y+5)-5y=13\\6y+15-5y=13\\y=13-15\\y=-2\\\\x=2\cdot(-2)+5=-4+5=1\\\\Answer:x=1;\ y=-2.$

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3 years ago

What is -10=10(x+9) and could you tell me how to do it cause I don't understand.

timofeeve [1]

-10=10x+90
80=10x
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marysya [2.9K]

Answer:

3/2y - 5

Step-by-step explanation:

-1/2(-3y+10)

Expand the brackets.

-1/2(-3y) -1/2(10)

Multiply.

3/2y - 5

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Step-by-step explanation:

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