3 years ago

What is the value of x? A.128o B.138o C.118o

Mathematics

1 answer:

Bad White [126]3 years ago

6 0

Answer:

124°

Step-by-step explanation:

This is an Isosceles triangle so the measure of the neighbouring corner to x is

(180 - 76) ÷ 2 = 56

Since x + 56 would be 180 the value of x is 180 - 56 = 124

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The diameter of a parabolic mirror is 22 centimeters, and the mirror has a depth of 0.5 centimeters at the center. What is the e

a_sh-v [17]

1/242x^2 is your answer

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3 years ago

5x increased by 120%

Vlad [161]

"Increased by" means to multiply.

First, change the percentage to a number.

% ⇒ # : %/100

120(%) (120 ÷ 100) = 1.2

Now, you multiply.

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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

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3 years ago

100 POINTS FRESHMAN MATH 1 FUNCTIONS HELP

Anvisha [2.4K]

Answer:

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Step-by-step explanation:

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3 years ago

Hi... can you tell me is this formula is right or wrong??

Llana [10]

Answer:

this formula is right

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