3 years ago

Which number is rational? Please help me

Mathematics

1 answer:

aliya0001 [1]3 years ago

6 0

Answer:A

Step-by-step explanation:

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Twice the sum of a number and ten

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2(x+10)

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Gas prices have really decreased in the past month. At the beginning of March I paid $2.15 per gallon. I just recently filled my

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3 years ago

A right triangle has legs of length 4x and 20x. What is an expression for the hypotenuse of the right triangle

kherson [118]

Answer:

$4x\sqrt{26}$ .

Step-by-step explanation:

Given information:

$Leg_1=4x$

$Leg_2=20x$

According to the Pythagoras theorem,

$(hypotenuse)^2=(Leg_1)^2+(leg_2)^2$

Using Pythagoras theorem, we get

$(hypotenuse)^2=(4x)^2+(20x)^2$

$(hypotenuse)^2=16x^2+400x^2$

$(hypotenuse)^2=416x^2$

Taking square root on both sides.

$hypotenuse=\sqrt{416x^2}$

$hypotenuse=4x\sqrt{26}$

Hence, the expression of the hypotenuse is $4x\sqrt{26}$ .

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