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
olasank [31]
3 years ago
9

I need it fast please

Mathematics
2 answers:
Westkost [7]3 years ago
8 0

Answer:

B. 3m-18n

Step-by-step explanation:

5m+3n-5m+3(m-7n)

=5m+3n-5m+3m-21n

=3m-18n

Arturiano [62]3 years ago
7 0
It’s B.
I have to use 20 characters so....




You might be interested in
B) 2x² - 4x + 3 = 0<br> a) x² + 3x – 10 = 0
kozerog [31]

Answer:

a. x = 2 , x = -5

b. no real roots

Step-by-step explanation:

<u>a. x² + 3x – 10</u>

= x² - 2x + 5x - 10

= x (x²/x - 2x/x) + 5 (5x/5 - 2*5/5)

= (x - 2) (x + 5)

x - 2 = 0                            x + 5 = 0

 + 2    +2                             -5     -5

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

x = 2                                   x = -5

x = 2 , x = -5

<u>b. 2x² - 4x + 3 </u>

This can't be solved because the equation has no real roots, and also the discriminant is negative.

3 0
3 years ago
Use the net as an aid to compute the surface area of a triangle pyramid with an equilateral triangle base
murzikaleks [220]

Answer:

106 ft 2

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
What is 1/3 times 1/2
katrin [286]
The answer is 1/6 dkdjdkvndkd
4 0
3 years ago
Which expression is equivalent to 4/9 x 7​
Romashka [77]

Answer:

I think it is 3.1

Step-by-step explanation:

make me brainlyest pls

8 0
3 years ago
I need help with this one
Aleksandr [31]

Answer:

58 degrees

Step-by-step explanation:

The little square in the corner signals a right angle/a 90 degree angle. If x and 32 add up to 90, then x is 58.

7 0
2 years ago
Other questions:
  • What is the definition of COEFFICIENT?
    12·1 answer
  • if jean and kim combined their weekly allowances they would have $12. Jeans allowance is $2 more than kim’s allowance
    5·1 answer
  • Find the domain and range of the function:<br> f(t)=sec[((pi)t)/4]
    15·1 answer
  • Jamestown Steel Company manufactures and assembles desks and other office equipment at several plants in western New York State.
    13·1 answer
  • PLS HELP The diagram was constructed with straightedge and compass tools. Points A, B, C,
    10·1 answer
  • 1) How is unit rate related to slope or rise over run?
    12·1 answer
  • Which following relationships would produce a greater output, linear or exponential?
    8·2 answers
  • What is the constant in the following expression? <br> 1/2x + 7y + z + 13
    10·2 answers
  • If 11A=180 then prove that secA×sec2A×sec3A×sec4A×sec5A<br>=32.​
    5·1 answer
  • Divide 82 in the ratio 1:3<br><br> will give brainliest to whoever answers first
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!