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Over [174]
2 years ago
6

Un How many solutions does this system have? 12x-4y=-8 y=3x+2

Mathematics
1 answer:
Talja [164]2 years ago
3 0

Answer:

Infinite

Step-by-step explanation:

Get both in the form y = first.

12x - 4y = -8

-4y = -8 - 12x

y = 2 + 3x

y = 3x + 2

These are the same line so all points are the same so that means there are infinite answers.

If ONLY the number in front of the x was the same there would be 0 answers, they would be parallel lines, and if the number in front of the xs were different there would only be one answer.  

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Find the missing measures. Leave answers in simplified radical form.

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3 years ago
What is the solution for x in the equation?
Vsevolod [243]

Answer:

Perpendicular ⇒

m = -1/-4 = 1/4

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Step-by-step explanation:

3 0
2 years ago
Fred has 45 books. Sally has 27 times more books than Fred. How many books does Sally have?
hodyreva [135]

Answer:

fred = 45 books

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5 0
2 years ago
A region with a 5-mile radius has a population density of about 3100 people per square mile. Find the number of people who live
Gwar [14]

Answer:

243,000 people

Step-by-step explanation:

First, what we need to do is to calculate the area of the region using the 5-mile radius

Mathematically, we can calculate this as the area of a circle

Area = pi * r^2

Our r here is 5 miles

Area = pi * 5^2 = pi * 25 = 78.54 square miles

Now to get the population, we know that per square mile we have 3,100.

Hence per 78.54 square mile, we have 78.54 * 3100 = 243,273 people

To the nearest thousand, 243,000

4 0
3 years ago
the population of a country double every 10 years from 1950 to 1980.what was the percentage increase in population during this t
fredd [130]

700% increase.

Step-by-step explanation:

The duration was 3 decades, or 30 years. The population starts at 100%, then doubles to 200% (decade 1), then 400% (decade 2), then 800% (decade 3).

800% - 100% = 700%

3 0
3 years ago
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