MATHEMATICS MIDDLE SCHOOL

Write an equivalent expression for 3x+12+7x+x

Answers

Answer 1

Answer: 3x+12+7x+xCombine Like Terms:=3x+12+7x+x=(3x+7x+x)+(12)=11x+12Answer:=11x+12

Answer 2

Answer:

Final answer:

The equivalent expression for 3x+12+7x+x is obtained by combining like terms, which gives us 11x + 12.

Explanation:

To find an equivalent expression for the equation 3x+12+7x+x, we need to combine like terms. This principle is similar to the addition of ordinary numbers, where the order doesn't affect the final sum, for example, 2 + 3 equals to 5, just as 3 + 2 equals to 5. In this case, the like terms are the terms that have the variable 'x'.

First, let's add all the terms that contain 'x': 3x + 7x + x. Here, 3x, 7x, and x (which mathematically equals to 1x) are like terms because they all contain the variable 'x'. So, if we combine them, it sums up to 11x.

Then, we can combine this result with the remaining number in the equation, which is 12. Therefore, an equivalent expression for 3x+12+7x+x is 11x + 12.

Learn more about Equivalent Expressions here:

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What type of figure is this supposed to be?

Answers

The shape is a Hexagonal pyramid

2x-9+4x+8
The answer choices are:
A 8x+17
B 8x-72
C 6x-1
D -7x+12x

Answers

Answer: 6x-1

Step-by-step explanation:

What number comes next in this pattern 2,4,8,16,32

Answers

2+2 = 4
4+4 =8
8+8 = 16
16+16 = 32
32+32 = 64
and so on :)

It would be 64 because it is multiplying 2 each time with that number. So, it would be 2 times 2 is 4. Then 4 times 2 is 8. Then 8 times 2 is 16. And 16 times 2 is 32. Then I did 32 times 2 and got 64.

Antonio is standing on a at the edge of a canyon. He yells loudly and hears an echo 1.2 s later. How far away is the other side of the canyon? You may assume the speed of sound is 340 m/s.Russell is watching a thunderstorm. He hears the thunder 5 s after seeing a flash of lightning. How far away was the lightning?

Answers

Answer:

204 m
1700 m

Step-by-step explanation:

a) In 1.2 seconds, sound will travel a distance of ...

(1.2 s)(340 m/s) = 408 m

This is the round-trip distance, so the reflecting surface is half that distance away.

The other side of the canyon is 204 m away.

b) In 5 seconds, the sound will travel a distance of ...

(5 s)(340 m/s) = 1700 m

This is the one-way distance, so the lightning is about 1700 m away.

Ella conducted a survey to find out the amount of time high schoolers spend surfing the Internet. From the data collected, the range of time spent was 1 hour. What does this range say about the data? A. All the students surveyed spend exactly 1 hour surfing the Internet.
B. All the students surveyed spend an average of 1 hour surfing the Internet.
C. The difference between the greatest amount of time and the least amount of time spent surfing the Internet is 1 hour.
D. The quotient between the greatest amount of time and the least amount of time spent surfing the Internet is 1 hour.

Answers

The answer is C.

Because we do not have any tables graphs etc., we can only use the fact that the range is 1

The definition of range is the difference between the largest amount and the smallest amount. In equation form, it should look like this: $Largest-Smallest$

Now lets move to the answer choices:

Answer A. is wrong
If everyone surfed for exactly an hour, the largest amount of time would be 1 hour and the smallest amount of time would also be 1 hour. Put this into the equation and the range would be 0 which is contradicted from the data present

Answer B. is wrong because the range is not the average, the mean is the average. We are looking for the range, not the mean so Answer B. is incorrect.

Answer C. is correct. The range is the difference between the largest and the smallest. In this answer, it tells us that the range is the difference between the greatest amount of time and the least amount of time spent surfing the Internet is 1 hour. This follows the term of "Range" and therefore, Answer C. is correct.

Answer D. is incorrect because the range does not have anything to do with quotients.(By the way, a quotient is the result of dividing a dividend with a divisor.) The range is only obtainable with subtraction, not division, so answer D. is incorrect.

Answer:

Step-by-step explanation:

I took the test

How many fourths are there in 2 1/4?