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PolarNik [594]
3 years ago
8

Solve y = x^2 - 18 for x.

Mathematics
1 answer:
viva [34]3 years ago
3 0

Answer:

x = √y+18

Step-by-step explanation:

Given

y = x^2-18

In order to solve the equation for x, we have to isolate x on one side of the equation

So,

y+18 = x^2 -18 + 18\\y + 18 = x^2

We have to find the value for x, so taking square root on both sides

\sqrt{x^2} = \sqrt{y+18}

Solving the squre root

x = x = \sqrt{y + 18}

Hence,

x = √y+18 is the correct answer ..

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Jacky read at the rate of 15 pages per hour. Johnny read at the rate of 1/3 of a pages per minute. Who was reading faster? By ho
o-na [289]
We can compare by converting Johnny's reading time into the same unit of Jacky's, hours.

There are 60 minutes in an hour, so use this:

\frac{1}{3} *  \frac{60}{1} = 20

15 < 20, so Johnny read faster. This is 5 pages faster per hour than Jacky.
3 0
3 years ago
Factor 27 + d^ 3completely.
Sedaia [141]

Answer:

(3+d)(9-3d+d^2)

Step-by-step explanation:

a^3 + b^3 = (a+b)(a^2-ab+b^2)

a= 3

b= d

7 0
3 years ago
If x+1/x = 5 find the value of x^3 +1/x^3. pls solve​
Korolek [52]

Answer:

1) solve x+1/x = 5

\frac{x + 1}{x}  = 5

x + 1 = 5x

x - 5x =  - 1

- 4x =  - 1

x =  \frac{ -1}{ - 4}

x =  \frac{1}{4}

2) solve x³+1/x³

x {}^{3}  +  \frac{1}{x {}^{3} }

substitute x = 1/4 into the expression

( \frac{1}{4} ) {}^{3}  +  \frac{1}{( \frac{1}{4}) {}^{3}  }

\frac{1}{64}  +  \frac{1}{ \frac{1}{64} }

\frac{1}{64}  +  \frac{64 \times 1}{1}

\frac{1}{64}   + 64

\frac{4097}{64}  \: or \: 64.02

5 0
3 years ago
What is the largest square factor of 49896
alexira [117]

Answer:

The biggest factor of 49896 is 24948

3 0
3 years ago
2/5 of a bag of soil fills 1/3 of a container, Is 1 bag of soil enough to fill 1 container?
natka813 [3]

Answer:

No.

Step-by-step explanation:

Let's find out if 1 bag of soil is enough to fill 1 container.

<u>Given:</u>

2/5 of a bag fills 1/3s of a containter.

With the given, multiplying 2/5 by 2.5 represents one. Multiply 1/3 by 2.5 aswell.

<u>Products:</u>

1, and 2.5/3 or 5/6

1 bag can fill 5/6 of a container.

Therefore, 1 bag can't fill 1 container.

7 0
2 years ago
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