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
lesya [120]
3 years ago
13

What is (2n+2n)-(3n-4n)

Mathematics
1 answer:
Yakvenalex [24]3 years ago
7 0

Answer:

2n^{2} +2n

INSERT

Step-by-step explanation:first you want to move the negative which is negative 1 into the set of parenthesis and then Foil the two parenthesis together and the combine like terms

You might be interested in
Evaluate the expression 5 x (8+6-2)
Rom4ik [11]

Answer: 60

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Evaluate f(x)=7x+7 when x=-9
stealth61 [152]

Answer:

-56

Step-by-step explanation:

f(x) = 7x + 7

x = -9

We meed to plug in x = -9 into the first equation:

f(-9) = 7(-9) + 7

We can open up the parentheses:

f(-9) = -63 + 7

And then simplify:

f(-9) = -56

7 0
3 years ago
Vinny decorated 72 cookies and 36 minutes how many cookies did you decorate per minute
SCORPION-xisa [38]
2 cookies. 72/36= 2 cookies per minute. 
6 0
3 years ago
I=$720, P=$1000, r=9%
UNO [17]
I = PRT

720 = (1,000)(0.09)(t)
720 = 90(t)
720/90 = t
8 = t  or t = 8

I am not sure if it is terms  of months or years but 8 is the answer. hope it helps :)
7 0
3 years ago
Read 2 more answers
A sample of 30 distance scores measured in yards has a mean of 7, a variance of 16, and a standard deviation of 4. You want to c
Nikolay [14]

Answer:

21, 144, 12

Step-by-step explanation:

Given that a sample of 30 distance scores measured in yards has a mean of 7, a variance of 16, and a standard deviation of 4.

Let X be the distance in yard.

i.e. each entry of x is multiplied by 3.

New mean variance std devition would be

E(3x) = 3E(x) = 21

Var (3x) = 3^2 Var(x) = 9(16) =144

Std dev (3x) = \sqrt{144 } =12

Thus we find mean and std devition get multiplied by 3, variance is multiplied by 9

4 0
2 years ago
Other questions:
  • What is 280 divide by 30
    15·2 answers
  • WHOEVER GETS IT RIGHT GETS BRAINLIEST
    15·2 answers
  • A small theater sold 72 tickets for a play. The ratio of adult tickets to child tickets was 4:1 the ratio of adults tickets to s
    14·1 answer
  • Purse A which contains $1,000 today. If you leave it alone, it will contain $1,200 tomorrow (by magic). The next day, it will ha
    9·1 answer
  • Please help! I’m timed!!!
    13·1 answer
  • Please answer asap<br> no work needed :)
    15·2 answers
  • Why do women get paid less than men do
    11·2 answers
  • I don’t understand please help
    13·1 answer
  • What is the equation of g(x)?
    8·1 answer
  • 10 more than the difference of 6m and 3. Write the sentence as a numerical expression
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!