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
shtirl [24]
3 years ago
15

B) What should be subtracted from -7mn + 2m² + 3n² to getm²+ 2mn + n²?please help​

Mathematics
1 answer:
Hitman42 [59]3 years ago
6 0

Answer: m²-9mn+2n²

Step-by-step explanation: make use of BODMAS strategy. Let the unknown be x.

-7mn+2m²+3n²-x= m²+2mn+n². Since we are concerned about getting the unknown,let's try to collect the like terms.

-7mn+2m²+3n²-(m²+2mn+n²)= x

-7mn+2m²+3n²-m²-2mn-n²= x

-7mn-2mn+2m²-m²+3n²-n²=x

-9mn+m²+2mn= x

X= m²-9mn+2n²

You might be interested in
EXTREMELY URGENT! I'm in a timed math test atm, and I need answers for lots of questions! Look at the pictures posted, ignore my
Reil [10]

Answer:

You are right! The answer is c.

Step-by-step explanation:

3 0
3 years ago
3.0 plzzzzzz help thank you
hoa [83]

Answer:

80%

Step-by-step explanation:

100/5*4

8 0
3 years ago
6. Which expression is equivalent to -21 + 28x? *
ollegr [7]

Answer:

21/28

Step-by-step explanation:

Are there any answer choices?

-21 + 28x = 0

28x = 21

Divide by 28

x = 21/28

7 0
3 years ago
Please help will give brainliest ​
Ksju [112]

Answer:

a² = 144

b² = 25

c² = 169

c = 13

Step-by-step explanation:

• a² = 12×12

= 144

• b² = 5×5

= 25

• a² + b² = c²

= 144 + 25 = 169

• c = _/169

= 13

6 0
3 years ago
13 Use the replacement set {4, 6, 12} to find which values will make the equation 2x + 4 = 16 Strue. A None of the values are a
storchak [24]
I think it has to be A
3 0
3 years ago
Other questions:
  • I have a big math test tomorrow and a question on the review packet my teacher made for my class just doesn't make sense to me.
    15·1 answer
  • A dieter is allowed to eat up to a pound of protein each day in the form of chicken and fish. One ounce of fish is equal to 100
    6·1 answer
  • What is thw value of x?<br>x=____​
    5·2 answers
  • Which of the following correlation values represents a perfect linear relationship between two quantitative
    8·1 answer
  • What is the solution to this equation? –5(s – 6) = –10 A. s = –4 B. s = 8 C. s = 28 D. s = 32
    13·1 answer
  • A line has a slope of 10 and includes the points (3, n) and (4,0). What is the value of n?<br> n =
    11·1 answer
  • The ratio of cats to dogs is 8:9. If<br> there are 27 dogs, how many cats<br> are there<br> (Help)
    11·1 answer
  • IS THIS CORRECT? THANK YOU
    5·2 answers
  • HELP WILL GIVE BRAINLIEST!!!!!!
    14·1 answer
  • Use a recursive function for the geometric sequence 2, -6, 18, -54,... to represent the 9th term.
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!