1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Zepler [3.9K]
3 years ago
11

Which pair of expressions is equivalent?

Mathematics
1 answer:
EleoNora [17]3 years ago
4 0
A) 2x + 10 equals 2x + 10
B) 7x + 3 does NOT equal 7x + 15
C) 4y - 8 doe NOT equal 4y - 2
D) 2y + 12 does NOT equal 2y - 12

Thus, A is the appropriate answer.

Hope that helped!
You might be interested in
E
dsp73

Answer:

what explain more send picture of the question

Step-by-step explanation:

7 0
3 years ago
Find the volume of a 1 km3 body of water in m3, and select the correct units.
Gala2k [10]

Answer:

1,000,000,000 m^3

Step-by-step explanation:

1 kilometer is equal to 1000 meters, and 1 km^3 is 1 km * 1 km * 1 km

Therefore,

1000m * 1000m * 1000m = 1,000,000,000 m^3

Hope this answer helped! :)

7 0
2 years ago
Solve the following equation for x.<br> 3(1+5) = 1 + 19<br> The solution is x =
atroni [7]

Answer :

3 (1 + 5) = 1 + 19

3(6) = 20

18 = 20

x = 20-18

x = 2 is the answer

Hope it helped

4 0
3 years ago
A worker wants to save enough money to buy new
allochka39001 [22]

Answer:

The least amount of numbers that he can work at his job to have enough for the headphones he wants is 17 hours.

Step-by-step explanation:

To find the number of hours you could divide the cost of the headphones by the amount he earns each hour so you would do $119/ 7 to get 17 and then you could check your answer with multiplication by multiplying 7 * 17 to get 119 which shows that he has to work at least 17 hours to get the headphones he wants.

$119 / 7 = 17

17 * 7 = 119

3 0
3 years ago
If the mean of 4,6,4,7,(x+1),8 and 2 is 5 ,find the median​
Rainbow [258]
<h3>Answer:  Median = 4</h3>

===========================================================

Explanation:

The mean is found by adding up all of the values and dividing by n, where n is the number of values in the set.

In this case, we have n = 7 values here. We count (x+1) as well since x is a placeholder for a number, which makes (x+1) also a placeholder in a sense.

As for what replaces x, we're not sure yet but we can use algebra to solve.

Lets add up all of the values given except for the "5" at the end. That 5 is the mean which is not part of the data set.

Adding up those values mentioned gives:

4+6+4+7+(x+1)+8+2 = x+32

Then divide this over n = 7 to get the mean 5

(x+32)/n = mean

(x+32)/7 = 5

-----------------------------

Let's isolate x

(x+32)/7 = 5

x+32 = 7*5

x+32 = 35

x = 35-32

x = 3

If x = 3, then x+1 = 3+1 = 4

So the (x+1) is being a placeholder for the number 4.

In other words, we'll replace the (x+1) with 4.

The data set of

4,6,4,7,(x+1),8,2

updates to

4,6,4,7,4,8,2

-----------------------------

We'll get to the median in a moment, but first we need to check if we have the correct replacement for (x+1)

Add up the values in the set {4,6,4,7,4,8,2}

Doing so leads to: 4+6+4+7+4+8+2 = 35

Then divide by n = 7 to compute the mean: 35/n = 35/7 = 5

We get the mean is 5 which matches with the instructions. So we have the correct replacement for the (x+1). We can now find the median.

------------------------------

To find the median of any data set, we need to make sure the numbers are in order from smallest to largest.

Right now {4,6,4,7,4,8,2} is not sorted, but we can sort the items to get {2,4,4,4,6,7,8}

The median is at the exact middle. In this set, the median is that third copy of '4'. Note how "2,4,4" is to the left of the median while "6,7,8" is to the right of the median. There is the same number of values on either side of the median to show things are balanced and we are at the center point.

As an alternative, you can cross off each pair of outer values one at a time until you steadily arrive at the midpoint, which again is that third copy of '4'.

So that's why the median is 4.

8 0
3 years ago
Other questions:
  • 93.34 divided by x = 18.69
    15·1 answer
  • Solve the formula for the specified variable <br> h=42t+1/2at^2 for a
    6·1 answer
  • A factor two or more number is called a
    10·1 answer
  • Please answer the question in the picture
    6·1 answer
  • What’s the correct answer for this?
    9·2 answers
  • Please help me i really need it!:( <br>this is geometry by the way​
    11·2 answers
  • Sam runs a lemonade stand. One day he collected $6.55 in nickels and dimes. The number of nickels was 6 more than half the numbe
    6·1 answer
  • Which Exponentail expression represents The numerical expression 1/12 . 1/12 . 1/12 . 1/12?
    12·1 answer
  • How to find the b value in slope intercept form.
    9·1 answer
  • Help ill give 5 stars if you get it correct
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!