3 years ago

What value of x makes this equation true?

Mathematics

1 answer:

Alex73 [517]3 years ago

4 0

Answer:

$x=9/4=2.25$

Step-by-step explanation:

The model is essentially saying:

$3(-x)+10(1)=5(x)+8(-1)$

Simplify:

$-3x+10=5x-8$

Subtract 5x from both sides:

$-8x+10=-8$

Subtract 10 from both sides:

$-8x=-18$

Divide both sides by -8. The negatives cancel:

$x=18/8$

Reduce:

$x=9/4=2.25$

And we're done!

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Step-by-step explanation:

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3 years ago

Read 2 more answers

Graph the system of equations on your graph paper to answer the question.

scZoUnD [109]

y=x-4
y=-x+6
---------------------
Substitute x - 4 for y in y=-x+6
x-4=-x+6
--------------------------------
Add X on each side
x-4+x=-x+6+x
2x - 4 = 6
--------------------------------------
Add 4 on each side
2x-4+4=6+4
2x = 10
------------------------------------------------
Divide by 2 on each side
2x ÷ 2 = 10 ÷ 2
x = 5
Now we have X
================================================================
To find Y we substitute 5 for x in y=x-4
y = 5 - 4
y = 1
-----------------------------------------------------
Your answers are Y = 1 and X = 5

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3 years ago

What is 1000 rounded to the nearest ten?

Serga [27]

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