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liq [111]
3 years ago
8

What is the only solution of 2x2 + 8x = x2 – 16?

Mathematics
2 answers:
laiz [17]3 years ago
8 0
The answer is like 91
Irina18 [472]3 years ago
4 0

Answer:

the only sulition is 900000000000000000000000000000000000ueuy91

Step-by-step explanation:

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Let  x gallons be the amount of pure antifreeze that should be added to the 30% solution to produce a solution that is 65% antifreeze. Then the total amount of antifreeze solution will be x+3 gallons.

There are 30% of pure antifreeze in 3 gallons of solution, then

3 gallons - 100%,

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where a gallons is the amount of pure antifreeze in given solution.

Mathematically,

\dfrac{3}{a}=\dfrac{100}{30},\\ \\a=\dfrac{3\cdot 30}{100}=0.9\ gallons.

Now in new solution there will be x+0.9 gallons of pure antefreeze.

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or

\dfrac{x+3}{x+0.9}=\dfrac{100}{65},\\ \\65(x+3)=100(x+0.9),\\ \\65x+195=100x+90,\\ \\35x=105,\\ \\x=3\ gallons.

Answer: he should add 3 gallons of pure antifreeze.

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3 years ago
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GREYUIT [131]
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3 years ago
I need help with this geometry question.
sashaice [31]

Answer:

Step-by-step explanation:

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e).  Four co-planar points are G, F, H and C.

f). Intersection of planes ABC and ABE is the common line AB.

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If f(x) = -(-2x - 5), what is f(-5)?
sammy [17]

Answer:

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Step-by-step explanation:

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4 0
2 years ago
Read 2 more answers
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