3 years ago

Help please really need it fast :)

Mathematics

1 answer:

Serga [27]3 years ago

5 0

Answer:

.4 x .9

Step-by-step explanation:

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alexgriva [62]

The answer would be the first one

4 0

3 years ago

Help would be appreciated :)

Orlov [11]

Answer:

3y-x=-18

Step-by-step explanation:

3y-x=-18

3y=x-18

y=1/3x-6

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8 0

3 years ago

Solve each equation by substitution:<br><br>y = 6x - 17<br>y= -4x +23

NISA [10]

Answer:

$y = 6x - 17 \\ y = - 4x + 23 \\ then \\ 6 x - 17 = - 4x + 23 \\ 10x = 40 \\ x = 4 \\ y = 7$

7 0

2 years ago

What is the answer for 7-2(8/2)+9

photoshop1234 [79]

$7-2( \frac{8}{2} )+9 =$

Remove parentheses:

$7-2* \frac{8}{2} +9 =$

$7 - 2 * 4 + 9 =$

$7 - 8 + 9 =$

$= -1 + 9$

$= 8$

hope this helps!

6 0

3 years ago

X-4y=28 2x+y=2 Elimination

makvit [3.9K]

$\left\{\begin{array}{ccc}x-4y=28\\2x+y=2&\text{multiply both sides by 4}\end{array}\right\\\\\underline{+\left\{\begin{array}{ccc}x-4y=28\\8x+4y=8\end{array}\right}\qquad\text{add both sides of the equations}\\.\qquad9x=36\qquad\text{divide both sides by 9}\\.\qquad\boxed{x=4}\\\\\text{Put the value of x to the second equation:}\\\\2(4)+y=2\\8+y=2\qquad\text{subtract 8 from both sides}\\\boxed{y=-6}\\\\Answer:\ \boxed{x=4\ and\ y=-6\to(4,\ -6)}$

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3 years ago