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3 years ago

15

-2(x - 5) = -14 PLEASEEEEE HELPPPPPP

1 answer:

juin [17]3 years ago

8 0

Okay so you need to start off by using the distributive property, meaning you are going to multiply -2 by both items within the parentheses. this gives you -2x + 10 = -14. from here you want to isolate x, so you’ll subtract both sides by 10 to move it to the other side. this gives you -2x=-24. then you’ll divide both sides by -2 to completely isolate x. this gives you x=12. does that make sense?

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2 years ago

A first alloy contains x pounds of 55% silver. It is mixed with a second alloy containing 30% silver to make 60 pounds of an all

Ann [662]

Answer:

"24 pounds" is the appropriate answer.

Step-by-step explanation:

According to the question, the equation will be:

⇒ $x+y=60$ ...(equation 1)

or,

⇒ $\frac{55}{100}x+\frac{30}{100}y=\frac{40}{100}\times 60$

$55x+30y=2400$ ...(equation 2)

Now,

By multiplying (equation 1) by 55 and (equation 2) by 1, we get

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From equation 3 and 4, we get

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$y=\frac{900}{25}$

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By putting the values of "y" in equation 1, we get

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Thus the value of x be "24 pounds".

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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