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Fudgin [204]
3 years ago
14

Someone please help me with this question

Mathematics
2 answers:
const2013 [10]3 years ago
8 0

Answer:

9

Step-by-step explanation:

Because you do subtract 3 on both sides then divide 5x by 5 and 45 by 5

Archy [21]3 years ago
3 0

Answer:

your answer would be 9

Step-by-step explanation:

please mark this as brainlists

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which is the rationalized form of the expression the square root of x divided by the square root of x +the square root of 7
Ilya [14]

Answer:

I assume your goal is to rationalize the denominator -

So you need to multiply the denominator by its conjugate.

So we have:

\frac{\sqrt{x} }{\sqrt{x}-\sqrt{7} } *\frac{\sqrt{x} +\sqrt{7} }{\sqrt{x} +\sqrt{7}}

->

\frac{x-\sqrt{7}\sqrt{x} }{x-7}

gg

8 0
3 years ago
What are the zeros of f(x) = x2 + 2x - 80?
Lubov Fominskaja [6]

Answer:

The zeros are 8 and -10, all u have to do is substitute x for those values, factor it, or graph it.

8 0
3 years ago
Home heating oil is sold by the gallon. Last winter, the Romano family used 370 gallons of oil at $2.56 per gallon. If the price
belka [17]

Answer:

$1030

Step-by-step explanation:

Last winter:

Total expense = 370 * 2.56 = $947.2

Next year,

price increases 9% per gallon

which means, per gallon cost is $2.7904

Approx. expense = 370 * 2.7904 = $1032.448 which is round down to $1030

4 0
3 years ago
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Kayla buys 5 candles for x dollars each and 5 candle holders for $3.50 each. Kayla spends a total of $27.50 for the candles and
wolverine [178]
What is the question?
7 0
3 years ago
1. Change the given equation from general form to standard form,identify the vertex, focus, directrix,
Nuetrik [128]

Answer:

The answer is simply 9x

Step-by-step explanation:

2x2=4-16+16x+80+0=2+7=9x

5 0
2 years ago
Read 2 more answers
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