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2 years ago

PLZZZ HELPPPP!!!!

Mathematics

1 answer:

valentina_108 [34]2 years ago

3 0

The answer is a
Explanation: I’m not too sure about it

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Follow the directions to solve the system of equations by elimination. 8x + 7y=39 4x – 14y = -68

harina [27]

Step-by-step explanation:

Hey there!

Here;

The equations are;

$8x + 7y = 39.......(i)$

$4x - 14y = - 68..........(ii)$

Multiplying equation (i) by 2.

16x + 14y = 78

4x - 14y = -68

20x = 10

$x = \frac{10}{20}$

x = 1/2.

Putting value of 'x' in equation (i).

$8 \times \frac{1}{2} + 7y = 39$

$4 + 7y = 39$

$7y = 3 9 - 4$

$y = \frac{35}{7}$

Therefore the value of y is 5.

Check:

Put value of x and y in equation (i).

8x + 7y = 39

$8 \times \frac{1}{2} + 7 \times 5 = 39$

$4 + 35 = 39$

$39 = 39$

(True).

Therefore, the solution is ; (1/2,5).

Hope it helps...

8 0

3 years ago

Q#1 IF CORRECT ILLL BIVE U BRAINLIEST NEED FAST PLS

Orlov [11]

Answer:

The amount Chris started within his savings is $44. option C

Step-by-step explanation:

Amount Chris saved = $xAmount spent on video games = 1/2xAdditional amount earned = $10Total = $321/2x + 10 = 32subtract 10 from both sides1/2x = 32 - 101/2x = 22divide both sides by 1/2x = 22 ÷ 1/2x = 22 × 2/1x = $44Therefore, the amount Chris started within his savings is $44. option C

Hope this helped !!!!

8 0

1 year ago

Read 2 more answers

The endpoints of a line segment graphed on the coordinate system are (−7, 3) and (2, 5). What is the range of the graph?

Eduardwww [97]

I think the answer would be C

4 0

3 years ago

Determine from the following(choice one or choice two) mapping is a Function. Choice One Choice Two 3 1 0 2 3 2 -1 3 2 3 -2 0 Ex

saul85 [17]

Answer: