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3 years ago

Answer the following questions CORRECTLY I will know if this is wrong. I WILL REPORT ANY INCORRECT ANSWERS!

Mathematics

2 answers:

zmey [24]3 years ago

7 0

Answer by JKismyhusbandbae:

$\frac{x}{4}=20\\\mathrm{Multiply\:both\:sides\:by\:}4\\\frac{4x}{4}=20\cdot \:4\\Simplify\\x=80$

balandron [24]3 years ago

4 0

remember that you can do anything to an equaiton as long as you do it to both sides

x/4=20

multiiply both sides by 4

4(x/4)=20*4

(x)(4)(1/4)=80

(x)(4/4)=80

x(1)=80

x=80

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2 years ago

A ball is dropped from a height of 192 inches onto a level floor. After the third bounce it is still 3 inches off the ground. Pr

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Answer: The required fraction = $\dfrac18$

Step-by-step explanation:

Let the required fraction = $\dfrac{p}{q}$

Given: Initial height = 192 inches

Height of ball after second bounce = $\dfrac{p}{q}\times192$

Height of ball after third bounce = $\dfrac{p}{q}\times\dfrac{p}{q}\times192=192\dfrac{p^2}{q^2}$

After the third bounce it is 3 inches off the ground.

So,

$(\dfrac{p}{q})^2192=3\\\\\\(\dfrac{p}{q})^2=\dfrac{3}{192}\\\\(\dfrac{p}{q})^2=\dfrac{1}{64}\\\\(\dfrac{p}{q})^2=(\dfrac{1}{8})^2\\\\ \dfrac{p}{q}=\dfrac{1}{8}$

Hence, The required fraction = $\dfrac18$

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2 years ago

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