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PIT_PIT [208]
3 years ago
9

2/3x^2+15=23 help please

Mathematics
1 answer:
Fed [463]3 years ago
5 0

Answer:

x= 4.2

Step-by-step explanation:

2/3x^2=23-15

2/3x^2=8

Sq. root both sides

2/3x = 2.8

multiply both sides by 3

2x= 8.4

divide both sides by 2

x= 4.2

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Your mom's new car gets 32 miles per gallon and gasoline costs $1.99 per gallon. You are going to see Uncle buck for Christmas,
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The gas cost will be $19.53 for this trip.

Step-by-step explanation:

Given,

Distance covered by car per gallon = 32 miles

Cost of one gallon = $1.99

Unit rate in terms of miles;

32 miles = $1.99

1 mile = \frac{1.99}{32}\ Dollars

Therefore,

314 miles = Unit rate of mile * 314 miles

314 miles = \frac{1.99}{32}*314

314\ miles = \frac{624.86}{32}\\\\314\ miles=\$19.526

Rounding off to nearest hundredth;

314 miles = $19.53

The gas cost will be $19.53 for this trip.

Keywords: unit rate, multiplication

Learn more about unit rate at:

  • brainly.com/question/13076219
  • brainly.com/question/13096001

#LearnwithBrainly

6 0
3 years ago
Like terms 4x + 2x + 7x
nasty-shy [4]
Since the 3 of them are like terms, we have to ADD all 3 of them.

4x+2x+7x= 13x
4 0
3 years ago
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Answer:

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Step-by-step explanation:

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