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laiz [17]
3 years ago
8

4(2x + 1) = 6x + 10 Help

Mathematics
2 answers:
zysi [14]3 years ago
8 0

Hello! :)

4 (2x + 1) = 6x + 10 Simplify both sides of the equation

(4) (2x) + (4) (1) = 6x + 10 Distribute

8x + 4 = 6x + 10

8x + 4 − 6x = 6x + 10 − 6x  subtract 6x from both sides

2x + 4 = 10

2x + 4 - 4 = 10 - 4 Subtract 4 from both sides

2x = 6

2x/2 = 6/2 Divide both sides by 2

6/2 = 3 Simplify

x = 3 (ANSWER)

Hope this helped you!

THEDIPER

Lerok [7]3 years ago
4 0

Answer:

x=3

Step-by-step explanation:

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Plllsss answer! I don't understand this question.
Softa [21]

Answer:

  C and D

Step-by-step explanation:

Population density is the ratio of population to area. Its units are persons per square mile. Here, you're being asked to compare the population densities of several countries to the average population density in several US states.

__

<h3>average</h3>

The idea of "average population density of the 10 states listed" is somewhat ambiguous. It could mean either of (a) the ratio of the total of the states' population to the total of their land area, or (b) the average of the population densities of the states. (In the attached, we computed both, but the answer remains the same using either number.)

When there are numerous identical calculations to be performed, it is convenient to let a spreadsheet do them. The attached spreadsheet shows the population densities for the 10 states and 5 countries listed.

Depending on how you define it, the average population density of the 10 states is about 10.5 or about 15.7 people per square mile. (15.7 is the average of the density numbers, found using the spreadsheet AVERAGE function.)

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<h3>countries</h3>

The 5 countries have population densities ranging from about 7.7 to 236 people per square mile. Two of the countries have density below 10.5, so are the answers to the question asked.

  Canada (C) and Iceland (D) have population density below the US state average.

4 0
2 years ago
Ginny is studying a population of frogs. She determines that the population is decreasing at an average rate of 3% per year. Whe
Rama09 [41]

You can see how this works by thinking through what's going on.

 

In the first year the population declines by 3%.  So the population at the end of the first year is the starting population (1200) minus the decline: 1200 minus 3% of 1200.  3% of 1200 is the same as .03 * 1200.  So the population at the end of the first year is 1200 - .03 * 1200.  That can be written as 1200 * (1 - .03), or 1200 * 0.97

 

What about the second year?  The population starts at 1200 * 0.97.  It declines by 3% again.  But 3% of what???  The decline is based on the population at the beginning of the year, NOT based no the original population.  So the decline in the second year is 0.03 * (1200 * 0.97).  And just as in the first year, the population at the end of the second year is the population at the beginning of the second year minus the decline in the second year.  So that's 1200 * 0.97 - 0.03 * (1200 * 0.97), which is equal to 1200 * 0.97 (1 - 0.03) = 1200 * 0.97 * 0.97 = 1200 * 0.972.

 

So there's a pattern.  If you worked out the third year, you'd see that the population ends up as 1200 * 0.973, and it would keep going like that.

 

So the population after x years is 1200 * 0.97x

5 0
3 years ago
I need help with this question
Black_prince [1.1K]

Answer:

Step-by-step explanation:

The slope-intercept form is found by solving that equation for y.

If y-3=\frac{1}{2}(x-1) then

y-3=\frac{1}{2}x-\frac{1}{2} and

y=\frac{1}{2}x-\frac{1}{2}+3 and

y=\frac{1}{2}x-\frac{1}{2}+\frac{6}{2} so

y=\frac{1}{2}x+\frac{5}{2}

The answer you have chosen is the correct one!  Good job!

6 0
3 years ago
Find the slope of the line that passes through:<br> (-4, 7) and (-6,-4)
kramer
The correct slope is 11/2. You can find this with the rise and run method or converting to slope intercept form which is y=11/2x+20.
8 0
2 years ago
What is the volume of the sphere shown below with a radius of 3?
kaheart [24]

Answer:

volume of the sphere

=4/3π × r³

=4/3π × 3 × 3 × 3

=4/3π × 27

=36π ( <em>c</em><em> </em><em>)</em>

5 0
3 years ago
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