2 years ago

LMN and QRS are similar. Find the value of X.

Mathematics

1 answer:

Trava [24]2 years ago

5 0

x+5/30 = 50/75

x+5/10 = 2

x+5 = 20

x = 15

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Step-by-step explanation:

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2 years ago

The sum of reciprocals of rehman’s ages 3 years ago and 5 years from now is 1/3. Find his present age

Afina-wow [57]

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His age is 7 years.

Step-by-step explanation:

Let Rehman's present age be x years.

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3 years ago

Zack bought a coat for $69.78. He paid with a $100 bill and received $26.73 in change.How Much was the sales tax? Show your work

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3 years ago

At the beginning of the year, 40% of the students at the art club were boys. In the middle of the year, 25% of the girls left bu

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3 years ago

If y varies directly with x when y=8,x=20 find the value of x when y=42

Alecsey [184]

The value of x is 105 when y=42

Step-by-step explanation:

A direct proportion means that the change in one quantity will also cause the change in other quantity

Given

y varies directly with x

x ∝ y

when the proportionality symbol is removed a proportionality constant is introduced

$x=ky\\k=\frac{x}{y}\\Putting\ y=8\ and\ x=20\\k=\frac{20}{8}\\k = \frac{5}{2}\\So,\ the\ equation\ will\ be\\x=\frac{5}{2}y\\Putting\ y=42\\x=\frac{5}{2}*42\\x=5*21\\x= 105$

The value of x is 105 when y=42

Keywords: Proportion, Direct variation

Learn more about proportion at:

#LearnwithBrainly

5 0

3 years ago

LMN and QRS are similar. Find the value of X.​

LMN and QRS are similar. Find the value of X.