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
atroni [7]
3 years ago
10

Find (3a2 - 2a + 4) - (a2 - 3a + 7) .

Mathematics
1 answer:
melisa1 [442]3 years ago
6 0
<span>(3a^2 - 2a + 4) - (a^2 - 3a + 7) = (distribute the negative sign)
3a^2 - 2a +4 - a^2 + 3a - 7 = (add like terms)
2a^2 + a - 3
So, the answer is A!

</span>
You might be interested in
The length of a rectangle is 3 more than 3 times its width. The perimeter of the rectangle is 174 inches. What is the length of
saveliy_v [14]

Answer:

<em>l = w + 3cm</em>

<em>l = w + 3cmp = 2l + 2w = 58cm</em>

<em>l = w + 3cmp = 2l + 2w = 58cm </em>

<em>l = w + 3cmp = 2l + 2w = 58cm Solve by substitution:</em>

<em>l = w + 3cmp = 2l + 2w = 58cm Solve by substitution:2l + 2w = 58 ⇒ 2(w + 3) + 2w = 58</em>

<em>l = w + 3cmp = 2l + 2w = 58cm Solve by substitution:2l + 2w = 58 ⇒ 2(w + 3) + 2w = 58⇒ 2w + 6 + 2w = 4w + 6 = 58</em>

<em>l = w + 3cmp = 2l + 2w = 58cm Solve by substitution:2l + 2w = 58 ⇒ 2(w + 3) + 2w = 58⇒ 2w + 6 + 2w = 4w + 6 = 58⇒ 4w = 52 ⇒ w = 13</em>

<em>l = w + 3cmp = 2l + 2w = 58cm Solve by substitution:2l + 2w = 58 ⇒ 2(w + 3) + 2w = 58⇒ 2w + 6 + 2w = 4w + 6 = 58⇒ 4w = 52 ⇒ w = 13 </em>

<em>l = w + 3cmp = 2l + 2w = 58cm Solve by substitution:2l + 2w = 58 ⇒ 2(w + 3) + 2w = 58⇒ 2w + 6 + 2w = 4w + 6 = 58⇒ 4w = 52 ⇒ w = 13 Plug back in:</em>

<em>l = w + 3cmp = 2l + 2w = 58cm Solve by substitution:2l + 2w = 58 ⇒ 2(w + 3) + 2w = 58⇒ 2w + 6 + 2w = 4w + 6 = 58⇒ 4w = 52 ⇒ w = 13 Plug back in:l = (13cm) + 3cm = 16cm</em>

<em>l = w + 3cmp = 2l + 2w = 58cm Solve by substitution:2l + 2w = 58 ⇒ 2(w + 3) + 2w = 58⇒ 2w + 6 + 2w = 4w + 6 = 58⇒ 4w = 52 ⇒ w = 13 Plug back in:l = (13cm) + 3cm = 16cmStep-by-step explanation:</em>

I hope this helps you.

5 0
2 years ago
Animals hair grows at a rate of 1 •10^-5 miles per hour.How many miles will animals Jaír grow after 500 hours?Express answer sci
babunello [35]

Answer:

0.005

Step-by-step explanation:

10^-5 =0.00001

0.00001x1= 0.00001

0.00001x 500=0.005 miles

5 0
3 years ago
I need help with 1-4
worty [1.4K]
1) the longest side is 5cm and the perimeter is 12cm
2) longest side is 12.04 or just 12
3) 241 miles apart
4) Yes it is
6 0
3 years ago
Cody and his friends started playing a game at 6:30 p.M. It took them 37 minutes to finish the game. At what time did they finis
Charra [1.4K]

Answer:

7:07pm.

Step-by-step explanation:

There's no way to explain this you just need to know time.

7 0
3 years ago
Read 2 more answers
If you could just refresh me on how to do this, thanks.
Masteriza [31]
I'm pretty sure it's D
8 0
3 years ago
Other questions:
  • Find the three arithmetic means in this sequence 14 and 26
    7·1 answer
  • Choose the correct graph for the equation y=2x+3
    12·2 answers
  • How many terms are in the binomial expansion of (3x + 5)^9?
    12·2 answers
  • For the function F(x) = 1/x, whose graph is shown below, what is the relative value of F(x) when the value of x is close to zero
    7·1 answer
  • Pls help my test is timed!! Which of the following scatterplots would have a trend line with a negative slope?
    8·1 answer
  • I am thinking of an a number less than 20 greater than 10. the sum of the digits in the number is 6. what is the number? It’s fo
    9·1 answer
  • What is the volume, in cubic m, of a rectangular prism with a height of 4m, a width of
    10·1 answer
  • Simplify the expression:<br> (x^3y^n/z^m+1)^k
    11·1 answer
  • Finn read 43 pages of his book in an hour
    14·1 answer
  • The ratio of the lengths of corresponding sides of similar triangles is 3/8. What is the ratio (smaller to larger) of the areas?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!