3 years ago

What is the solution to this system of equations?

1 answer:

7 0

Answer:

the correct answer is b (4,2)

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Ilya [14]

To solve this you can use subtraction
186-27=159 (for the amount Eric gave away)
So Eric has 159 stars left!
Hope this helped!!

3 0

2 years ago

maks197457 [2]

The answer is 8.03x10^8

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3 years ago

zheka24 [161]

There should be 1 1/4 total cups

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3 years ago

Artyom0805 [142]

The answer is D
Type 1 Type 2 plants have somewhat similar height distributions

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2 years ago

adell [148]

Answer:

1800 oz.

Step-by-step explanation:

There are already 600 ounces of alloy of nickel.

Of this 600 oz, 50% is pure i.e. copper content = 600(0.5) = 300 oz

Now available is

Copper Other metals

300 300

Let x oz of 10% copper is added.

Then new alloy will have 300+0.1x oz copper in total of 600+x oz.

Percentage pure = $\frac{300+0.1x}{600+x} =20%$

Simplify to get

$\frac{300+0.1x}{600+x} =\frac{20}{100} \\\\Cross multiply:\\20(600+x) =100(300+0.1x)\\12000+20x =30000+10x\\10x = 18000\\x = 1800$

Hence answer is 1800 oz should be added.

3 0

3 years ago