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
masya89 [10]
3 years ago
14

20+8y-9y-21 which expression is equivalent

Mathematics
1 answer:
faust18 [17]3 years ago
4 0
Since you didn't provide expression to see which one is equivalent,, I will simply solve the expression you provided. If you need help finding out which expression option is equivalent after I solve this for you,, let me know and I would be more than happy to help you figure it out.
The first step for solving this expression is to calculate the difference between 20 and 21. We can start solving this by keeping the sign of the number with the larger absolute value and subtract the smaller absolute value from it. This will look like the following:
-(21 - 20)
Now subtract the numbers and add it back into the expression.
-1 + 8y - 9y
Next we need to collect the like terms with a y variable by subtracting their coefficients.
(8 - 9)y
Calculate the difference in the parenthesis.
-1y
Remember that when the term has a coefficient of -1,, the number doesn't have to be written but the sign must remain. 
-y
Lastly,, add this back into the expression to get your final answer.
-1 - y
Let me know if you have any further questions.
:)
You might be interested in
Subtract the following polynomials, then place the answer in the proper location on the grid.
Grace [21]
(3m - 4n - 7) - (8m + n - 6)

3m - 8m  = - 5m
-4n - n = -5n
-7 - (-6) = -7 + 6 = -1

-5m - 5n - 1 is your answer

hope this helps
8 0
3 years ago
Bojangles has a rectangular shaped roof with a width of 6x2 feet and a length 12x3. what is the area of the roof?
iren2701 [21]
Area of rectangle = length x width

this is the formula to find it.

now , put the values of length and width,
=> area= 12 x 3 x 6 x 2

=> area =  432 feet^2
6 0
3 years ago
Read 2 more answers
PLEASE help (desperate) :(
mars1129 [50]

Answer:

4= \sqrt{16} \\1.5   = \sqrt{2.25}\\8 = 6^{2} /9*2\\1 = \frac{12 - 2}{6 + 4}\\5 = \sqrt{16 + 9} \\9 = 63/3^{2} +|2|

6 0
3 years ago
Please help me find the answer
mixas84 [53]
136 would be the answer
5 0
2 years ago
Find the coordinates of the midpoint of each segment and find the length of each segment
Tasya [4]

Answer:

Is this the whole question or u cut it?

3 0
3 years ago
Other questions:
  • Evaluate and give me the answer
    6·2 answers
  • A metal hollow bar whose cross section and dimension are shown below weighs 8x10^3 kg/m^3 and measure 2m in length ..determine t
    6·1 answer
  • PLEASE HELP!!!!
    12·1 answer
  • Betsy started a business 2 years ago.She had 8 customers in the first year.She added 18 customers in the second year. Betsy's go
    8·1 answer
  • Which choice is the appropriate simplified form n restriction for the variable 3x^2 + 6x / x^2 - 2x - 8
    12·1 answer
  • There are 680 raisins in 8 bags. If each bag has the same number of raisins, how many raisins are in 12 bags?​
    8·1 answer
  • −1 3/5 ​÷ 5/-6 <br><br> khan academy
    7·2 answers
  • La diferencia entre un numero y ocho​
    8·2 answers
  • Victonia counts this week's food donations at a pet shelter. There are 16 full cases of canned food. There are 4 cases of canned
    15·1 answer
  • What is arcsin(cos3/5)<br><br> Giving brainliest please help
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!