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MariettaO [177]
3 years ago
15

Mrs. Thomas bought 4 gallons of gas. Her total cost was $6.76.

Mathematics
2 answers:
Verdich [7]3 years ago
6 0

Answer:

The cost of 1 gallon is 1.69

Step-by-step explanation:

its 1.69 because if you divide 6.76 by 4 gallons she would end up paying 1.69 for each gallon.

joja [24]3 years ago
3 0

4 gallons × y dollars/gallon=$6.76

4y=6.76

Divide both sides by 4

Y=$1.69

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Answer:

He will need $18.

Step-by-step explanation:

All you have to do is subtract $93-$75.

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3 years ago
If the cost is a function depending in the number of sections, how much will 200 sections cost?
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4 0
3 years ago
Read 2 more answers
The daily revenues of a cafe near the university are approximately normally distributed. The owner recently collected a random s
lbvjy [14]

Answer:

The sample size to obtain the desired margin of error is 160.

Step-by-step explanation:

The Margin of Error is given as

MOE=z_{crit}\times\dfrac{\sigma}{\sqrt{n}}

Rearranging this equation in terms of n gives

n=\left[z_{crit}\times \dfrac{\sigma}{M}\right]^2

Now the Margin of Error is reduced by 2 so the new M_2 is given as M/2 so the value of n_2 is calculated as

n_2=\left[z_{crit}\times \dfrac{\sigma}{M_2}\right]^2\\n_2=\left[z_{crit}\times \dfrac{\sigma}{M/2}\right]^2\\n_2=\left[z_{crit}\times \dfrac{2\sigma}{M}\right]^2\\n_2=2^2\left[z_{crit}\times \dfrac{\sigma}{M}\right]^2\\n_2=4\left[z_{crit}\times \dfrac{\sigma}{M}\right]^2\\n_2=4n

As n is given as 40 so the new sample size is given as

n_2=4n\\n_2=4*40\\n_2=160

So the sample size to obtain the desired margin of error is 160.

4 0
4 years ago
As an estimation we are told 5 miles is 8 km. <br> Convert 27.4 miles to km.
kicyunya [14]

Answer:

43.8 km to the nearest tenth.

Step-by-step explanation:

5 miles is 8 km

so 1 mile = 8/5 km

and 27.4 miles = 27.4 * 8/5

= 43.84 km

7 0
3 years ago
Read 2 more answers
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