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1 year ago

2y = 2x-4 y + 3x = 10 (substitution)

Mathematics

1 answer:

devlian [24]1 year ago

4 0

Answer:

x = 3, y = 1

Step-by-step explanation:

2y = 2x - 4, so y = x - 2. Substituting this into the bottom equation and solving for x:

x - 2 + 3x = 10

4x - 2 = 10

4x = 12, so x = 3 and y = 1.

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3 years ago

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Write a recursive formula and an explicit formula for the following arithmetic sequence

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Ummmmm add 4? The difference between each number is the same

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3 years ago

Please help with these 2 answers i only have 10 minutes left

natta225 [31]

Answer:

1/4 of a pound
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Step-by-step explanation:

For number 1:

3/4 ÷ 3 = 0.25
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I hope this helps!

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3 years ago

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Two gears are in mesh. The first gear is rotating at 60 rpm and has 23 teeth. The second gear is rotating at 5 rpm. How many tee

wolverine [178]

The rotation of the gears in he mesh involves a circular motion

The second gear has 2 teeth

<h3>How to determine the number of teeth?</h3>

The given parameter can be represented using the following ratio:

Ratio = Teeth : Revolution

So, we have:

23 : 60 = Teeth : 5

Express as fraction

23/60 = Teeth/5

Multiply both sides by 5

Teeth = 5*23/60

Evaluate the product

Teeth = 2

Hence, the second gear has 2 teeth

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5 0

3 years ago

The two-way table shows the number of people who have or have not graduated from college and who live or do not live in their ho

neonofarm [45]

Answer:

0.28

Step-by-step explanation:

Refer the attached figure

Given :

People who live in their hometown and graduated from the college =8

People who do not live in their hometown and graduated from the college = 10

People who did not graduate from college and lives in home town = 6

People who did not graduate from college and do not live in home town = 4

To Find : Among people who do not live in their hometown, what is the relative frequency of not graduating from college?

Solution :

The total no. of people who do not live in home town whether they are graduated or not graduated = 14

People who did not graduate from college and do not live in home town = 4

Thus Among people who do not live in their hometown the relative frequency of not graduating from college :

People who did not graduate from college and do not live in home town/total no. of people who do not live in home town whether they are graduated or not graduated

⇒ $\frac{4}{14}$

⇒ $\frac{2}{7}$

⇒ $0.28$

Thus , Among people who do not live in their hometown the relative frequency of not graduating from college = 0.28

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3 years ago

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