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Citrus2011 [14]
3 years ago
11

Change each decimal or mixed decimal to a percent.

Mathematics
1 answer:
pychu [463]3 years ago
5 0
A: 73%
b: 2% / 2.3%
c: 17.6%
d: 241.5%
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Option D doesn't make any sense.

Step-by-step explanation:

D) 7 hours of sleep correspond to an age of 19 years.

That is wrong.

If we use the expression provided

hours = 8 + 0.5*(18 -age)

hours = 8 + 0.5*(18 -19)

hours = 8 + 0.5*(-1)

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Charlotte drove 304 miles in 8 hours. If she continued at the same rate, how long
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Can I have help I am stuck on this problem It would mean the world if u helped me and tysm!! =-)
Burka [1]

\large{ \boxed{ \tt{OUR \: ANSWER :  \underline{ \$ \: 583.3125}}}}

  • Well , You can solve this question using two ways. I'm gonna use the both ways to make you clear and the one which you can easily understand , pick up that way and start solving another question as similar as this one.

\large{ \tt{❃ \: FIRST \: METHOD }} :

This method is related to the unitary method. Let's start :

  • We're provided - Amount Kelly earns per hour for gardening = $ 12.75 and we're asked to find out the amount she earn if she worked 45.75 hours this month.

  • We know , Kelly probably earns more money if she worked 45.75 hours comparison to if she worked 1 hour. So You just multiply 45.75 & 12.75 , you would get $ 583.3125 and that's your final answer.

\large{ \tt{❃ \: SECOND \: METHOD}} :

This method is related to the proportion. If you haven't learned about it yet , use the above way to solve the similar type of questions. Let's start :

  • Let Kelly earns X dollars if she worked 45.75 hours this month. [ Now , See the attached picture ]

  • Here , we can see the time is increased which implies that money will surely be increased. Such type of proportion is called direct proportion.

  • Here , the ratio of time ( in hours ) = 1 : 45.75 and the ratio of amount ( in dollars ) = 12.75 : x . Now , Set up an equation and solve for x :

\large{ \tt{ ❁ \: \frac{1}{45.75}  =  \frac{12.75}{x}}}

\large{ \tt{↦ \: 1 \times x = 45.75 \times 12.75}}

\large{ \tt{↦x =   \$  \: 583.3125}}

  • Hence , She earned $ 583.3125 .

▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁

7 0
2 years ago
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