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soldi70 [24.7K]
3 years ago
9

Marco earns $36.50 per hour show that the relationship between the amount he earns and the number of hours he works is proportio

nal write an equation for the relationship
Mathematics
1 answer:
Korolek [52]3 years ago
3 0

To establish this equation we first need to assign some variables.

Let us assign x as the number of hours he has worked

and assign y as the total amount of money that he has earned

Therefore the equation y=36.50x is the equation that correctly represents how much money he makes regardless of how many hours he works.  Just plug in how many hours you want for x and then solve the equation and you will get how much money he makes in x amount of hours.  This is also proportional because for every hour that he works he gets the same salary of 36.50.  It is proportional because no matter how many hours he works the salary will go up the same amount for each extra hour he works.  The proportion is 36.50 dollars per hour worked.

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A tree 7 ft tall grows an average of 6 in. each year. Which equation models the tree’s height h after x years?
kakasveta [241]

h=7+(6•x) is the equation

3 0
3 years ago
A normal population has mean =μ7 and standard deviation =σ5. (a) What proportion of the population is less than 18?
marshall27 [118]

Answer:

P(x< 18) = 0.986

Step-by-step explanation:

Step 1: find the z-score using the formula, z = (x - µ)/σ

Where,

x = randomly chosen values = 18

µ = mean = 7

σ = standard deviation = 5

Proportion of the population that is less than 18 = P(x < 18)

Plug in the values into z = (x - µ)/σ, to get z-score.

z = (18 - 7)/5

z = 11/5 = 2.2

Step 2: Find P(x< 18) = P (z<2.2) using z-table.

The probability that corresponds with z-score calculated is 0.986.

Therefore,

P(x< 18) = 0.986

4 0
3 years ago
I need help with my final study guide
Citrus2011 [14]
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6 0
3 years ago
A motor scooter travels 20 mi in the same time that a bicycle covers 8 mi if the rate of the scooter is 4 mph more than twice th
aleksandr82 [10.1K]

We observe that 20 is 4 more than twice 8. This suggests the time is 1 hour and the rates are

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_____

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8 0
4 years ago
What is the median of Variable A? Express answer to one decimal place.
qwelly [4]
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(4 + 5) /2 = 4.5

The median is 4.5
3 0
3 years ago
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