2 years ago

Helpppppppppp asappppppppp 20 points

Mathematics

2 answers:

Lesechka [4]2 years ago

4 0

Here’s a small hint: “miles per hour”

Put the amount of miles over the amount of hours then calculate the amount from there! It’s either the 2nd option or the 4th one! Hope it’s helpful!

nikitadnepr [17]2 years ago

4 0

Answer:

i say its c

Step-by-step explanation:

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The Lee family pays an instructor $50 for Joylins 40-minute drum lesson

Lesechka [4]

Answer:

Nice. What is the question?

Step-by-step explanation:

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3 years ago

Find the length of the shorter leg of a right triangle with the longer leg is 9 feet more than the shorter leg the hypotenuse is

Jobisdone [24]

Answer:

Length of Shorter leg = 27 feet

Length of Longer leg = 36 feet

Length of Hypotenuse = 45 feet

Step-by-step explanation:

Given:

Let,

Length of Shorter leg = x,

According to the given condition we have

∴ Length of Longer leg = x + 9 feet

∴ Length of Hypotenuse = 2x - 9 feet

To Find:

Length of Shorter leg = ?

Solution:

Now In Right Angle Triangle, By Pythagoras theorem we have

$(\textrm{Hypotenuse})^{2} = (\textrm{Shorter leg})^{2}+(\textrm{Longer leg})^{2}$

substituting the given values we get

$(2x-9)^{2} = (x)^{2}+(x+9)^{2}\\$

By using Identity (A ± B)² = A² ± 2AB +B² we get

$4x^{2} -36x+81=x^{2} +(x^{2} +18x+81)\\\\4x^{2} -2x^{2} -36x-18x=81-81\\\\2x^{2} -54x=0\\2x(x-27)=0\\2x=0 or x-27=0\\\therefore x\ cannot\ be \ zero\\\therefore x = 27 \feet$

Substituting x=27 we get

∴ Length of Longer leg = x + 9 =27 +9 = 36 feet

∴ Length of Hypotenuse = 2x - 9 = 2×27 -9 = 45 feet

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3 years ago

Bruno is 4.5 times as old as Charles if Bruno is 27 how old is Charles

andrey2020 [161]

Answer:

Step-by-step explanation:

Bruno(B)= 4.5× Charles(C)

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dem82 [27]

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each side is a right angle
a right angle by definition is 90 degrees
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False

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Step-by-step explanation:

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