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SSSSS [86.1K]
3 years ago
11

A car travels 80 miles on 5 gallons of gas. How many gallons of gas

Mathematics
1 answer:
dalvyx [7]3 years ago
5 0

Answer:

7 gallons

Step-by-step explanation:

Step 1:

80 : 5 = 112 : x

Step 2:

80x = 560

Answer:

x = 7

Hope This Helps :)

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Find tan(a) in the triangle.<br> Choose 1 answer:<br> A. 7/25<br> B. 24/25 <br> C. 7/24 <br> D. 24/7
creativ13 [48]

Tan(a)= Toa

Toa =opposite/adjacent

Toa=7/25

final answer is 7/25

7 0
2 years ago
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Please answer and explain.
djyliett [7]

Answer:

x = 13

Step-by-step explanation:

The sum of the exterior angles of a 4 sided polygon is 360

139+ 6x+9x+2x = 360

Combine like terms

139+17x=360

Subtract 139 from each side

17x = 360-139

17x = 221

Divide each side by 17

17x/17 = 221/17

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2 years ago
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The American Management Association is studying the income of store managers in the retail industry. A random sample of 49 manag
VashaNatasha [74]

Answer:

a) The 95% confidence interval for the income of store managers in the retail industry is ($44,846, $45,994), having a margin of error of $574.

b) The interval mean that we are 95% sure that the true mean income of all store managers in the retail industry is between $44,846 and $45,994.

Step-by-step explanation:

Question a:

We have to find our \alpha level, that is the subtraction of 1 by the confidence interval divided by 2. So:

\alpha = \frac{1 - 0.95}{2} = 0.025

Now, we have to find z in the Z-table as such z has a p-value of 1 - \alpha.

That is z with a p-value of 1 - 0.025 = 0.975, so Z = 1.96.

Now, find the margin of error M as such

M = z\frac{\sigma}{\sqrt{n}}

In which \sigma is the standard deviation of the population and n is the size of the sample.

M = 1.96\frac{2050}{\sqrt{49}} = 574

The lower end of the interval is the sample mean subtracted by M. So it is 45420 - 574 = $44,846.

The upper end of the interval is the sample mean added to M. So it is 45420 + 574 = $45,994.

The 95% confidence interval for the income of store managers in the retail industry is ($44,846, $45,994), having a margin of error of $574.

Question b:

The interval mean that we are 95% sure that the true mean income of all store managers in the retail industry is between $44,846 and $45,994.

5 0
3 years ago
Please help giving BRANLIEST to the best answer THIS SHOULD BE EASY
solniwko [45]

Answer:

the size difference of figure two to figure one gets smaller

Step-by-step explanation:

its kinda obvious

5 0
3 years ago
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Lana makes eight dollars an hour Plus $12 an hour for every hour overtime. Overtime hours are any hours more than 40 hours for t
vagabundo [1.1K]

Answer:

W = $8X

Step-by-step explanation:

Lana makes $8 per hour

Extra $12 an hour for every hour overtime

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In this case, Lana worked for X hours with no overtime

If W is wages earned for working for X hours , the equation will be;

W= X * $8

W= $8X

5 0
3 years ago
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