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3 years ago

What is 50 miles on 2.5 gallons as a unit rate

Mathematics

2 answers:

ivolga24 [154]3 years ago

6 0

Answer: The required unit rate is 20 miles per gallon.

Step-by-step explanation: We are given to find the unit rate of 50 miles on 2.5 gallons.

We will be using the UNITARY method to solve the problem.

Number of miles covered in 2.5 gallons = 50.

So, number of miles covered in 1 gallon is given by

$\dfrac{50}{2.5}=\dfrac{500}{25}=20.$

Thus, the required unit rate is 20 miles per gallon.

Bas_tet [7]3 years ago

4 0

50/2.5= 20 Unit rate is 20 miles per gallon

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P( $-1.96 \times {\frac{\sigma}{\sqrt{n} } }$ < ${\bar X-\mu}$ < $1.96 \times {\frac{\sigma}{\sqrt{n} } }$ ) = 0.95

P( $\bar X-1.96 \times {\frac{\sigma}{\sqrt{n} } }$ < $\mu$ < $\bar X+1.96 \times {\frac{\sigma}{\sqrt{n} } }$ ) = 0.95

95% confidence interval for $\mu$ = [ $\bar X-1.96 \times {\frac{\sigma}{\sqrt{n} } }$ , $\bar X+1.96 \times {\frac{\sigma}{\sqrt{n} } }$ ]

= [ $4.85-1.96 \times {\frac{0.75}{\sqrt{20} } }$ , $4.85+1.96 \times {\frac{0.75}{\sqrt{20} } }$ ]

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