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zavuch27 [327]
3 years ago
5

PLEASE HELP ASAP! Will mark brainliest :)

Mathematics
2 answers:
gavmur [86]3 years ago
7 0

Answer:

x = abc/  (a+b)

Step-by-step explanation:

x/a + x/b = c

Multiply by ab to get rid of the fractions

ab(x/a + x/b) = abc

bx + ax = abc

Factor out an x

x( b+a) = abc

Divide each side by (a+b)

x ( a+b)/ (a+b) = abc/  (a+b)

x = abc/  (a+b)

Vinvika [58]3 years ago
7 0

Answer:

x=\frac{abc}{b+a}

Step-by-step explanation:

So we have:

\frac{x}{a}+\frac{x}{b}=c

And we want to solve for x.

To do so, let's remove the fractions. We can multiply both sides by the LCM of a and b, which is ab. So:

(ab)\frac{x}{a}+\frac{x}{b}=c(ab)

On the left, distribute. On the right, multiply:

\frac{x(ab)}{a}+\frac{x(ab)}{b}=abc

Simplify:

xb+xa=abc

Now, factor out an x on the left:

x(b+a)=abc

Divide both sides by (b+a):

x=\frac{abc}{b+a}

And we're done!

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A phone cost 199$ and is on sale for 25% off. What is the sale price?
andrey2020 [161]

Answer:

<em>See below.</em>

Step-by-step explanation:

Divide the percentage by 100 to turn it into decimal form.

\frac{25}{100}=.25

Then, multiply the percentage by the original amount.

199*.25=49.75

Last, subtract that from the original price.

199-49.75=149.25

<em>Answer: </em>149.25

<em>:)</em>

6 0
2 years ago
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erastova [34]

Answer:

a.

Step-by-step explanation:

2√3/16 - √75/16 + 2√27/16

2/4√3 - 5/4√3 + 6/4√3

3/4√3

5 0
2 years ago
(2x+2y=10)+(-x+y=1)
ruslelena [56]
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7 0
3 years ago
HELP FAST FAST FAST PLS ILL LOVE YOU FOREVER &lt;3
worty [1.4K]

Answer:

5

Step-by-step explanation:

2x5x7=70

4 0
2 years ago
8. A stock decreases $11 a day for 9 days. Which integer represents the total decrease?
user100 [1]

Answer:

D. 99

Step-by-step explanation:

Well they were losing money so 11 times 9 = 99

3 0
3 years ago
Read 2 more answers
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