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Angelina_Jolie [31]
2 years ago
10

Which equation, when solved, glves 8 for the value of x?

Mathematics
2 answers:
photoshop1234 [79]2 years ago
6 0

Answer:

C

Step-by-step explanation:

\frac{5x}{2} +\frac{7}{2} =\frac{3x}{4} +14\ isolate the terms with the variable x

\frac{5x}{2} -\frac{3x}{4} =14-\frac{7}{2} get the same denominator and combine like terms

\frac{10x-3x}{4} = \frac{28-7}{2} solve

\frac{7x}{4} =\frac{21}{2} crossmultiply and solve for x

x=\frac{4*21}{7*2} =6 so is not the first option

try second

\frac{5x}{4} -9=\frac{3x}{2} -12 same steps as before

\frac{5x-6x}{4}=9-12\

\frac{-x}{4} =\frac{-3}{1}  so  x=12 not the second option

try third option

\frac{5x}{4} -2=\frac{3x}{2} -4

\frac{5x-6x}{4} =2-4

\frac{-x}{4} =\frac{-2}{1} so x=8

RoseWind [281]2 years ago
5 0

Answer:

C.

Step-by-step explanation:

5/4x-2=3/2x-4

5/4x-3/2x = -4+2

(multiply both sides by 4)

5x-6x=-16+8

-x=-8

(multiply by -1)

x=8

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The quotient of 8. 4 times 10 Superscript 9 and a number n results in 5. 6 times 10 Superscript 27. What is the value of n? 1. 5
Inessa05 [86]

By simplifying given statement we got that if the quotient of 8.4\times10^ 9 and a number n results in 5. 6\times 10 ^{27} then n is equal to 1.5\times10^{-18}

<h3>What is quotient?</h3>

Result obtained after division is called quotient

Here given that "The quotient of 8. 4 times 10 Superscript 9 and a number n results in 5. 6 times 10 Superscript 27"

We can write it as

The quotient of 8.4\times10^ 9 and a number n results in 5. 6\times 10 ^{27}

we can write it as

\frac{8.4\times10^ 9}{n} =5. 6\times 10 ^{27}

Now we can simplify it as

n= \frac{8.4\times10^ 9}{5. 6\times 10 ^{27}} \\\\n= \frac{8.4}{5.6} \times\frac{10^9}{10^27} \\\\n= 1.5\times 10^{-18}

By simplifying given statement we got that if the quotient of 8.4\times10^ 9 and a number n results in 5. 6\times 10 ^{27} then n is equal to 1.5\times10^{-18}

To learn more about quotient visit :brainly.com/question/673545

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