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
Leno4ka [110]
3 years ago
8

In your notebook, set up the following subtraction in a vertical format and select the correct answer. Take -4 + 3a2 from 7a - a

2. -4 a2 - 7 a + 4 -4 a2 + 7 a + 4 -4 a2 - 7 a - 4 4 a2 + 7 a + 4
Mathematics
2 answers:
ahrayia [7]3 years ago
7 0

Answer:

-4a^2+7a+4 , a=2 or -1/4

Step-by-step explanation:

Take -4 + 3a2 from 7a - a2

It means 7a -a^2 - (-4+3a^2)

7a -a^2 +4-3a^2

7a -a^2-3a^2+4

7a -4a^2+4

-4a^2+7a+4

-4a^2+8a-a+4

-4a^2-a+8a+4

-a(4a+1)+2(4a+1)

(-a+2)(4a+1) =0

-a+2=0 4a+1=0

-a=-2 4a=-1

-a/-1=-2/-1 a=-1/4

a=2 or -1/4

Dominik [7]3 years ago
3 0

Answer:

a=2

Step-by-step explanation:

You might be interested in
F. describe the relationship between
Pavlova-9 [17]

Answer:

describe the relationship between what

Step-by-step explanation:

3 0
3 years ago
SOMEONE HELP I SUCK AT THIS MATH!
77julia77 [94]

Answer:

0.24

Step-by-step explanation:

2.88/12=0.24

4 0
2 years ago
Pleaseeeee help, I need this now...
hoa [83]

Answer:

7/16.  

Step-by-step explanation:

The first triangle has no shading.

The second triangle has 1/4 shaded.

The third has 3/9.

The fourth has 6/16.

Based on this pattern, we can assume that the number of small triangles in each triangle are going to be squared of numbers, since the first had 1, the second 4, the third 9, the fourth 16. So, the 8th triangle would have 8^2 small triangles, or 64 triangles in total.

The first triangle has no shaded triangles. The second has 1. The third has 3. The fourth has 6. If you study the pattern, the second triangle has 1 more than the previous, the third has 2 more, the fourth has three more. And so, the fifth triangle would have 6 + 4 = 10 triangles, the sixth would have 10 + 5 = 15 triangles, the seventh would have 15 + 6 = 21 triangles, and the eighth would have 21 + 7 = 28 shaded triangles.

So, the fraction of shaded triangles would be 28 / 64 = 14 / 32 = 7 / 16.

Hope this helps!

3 0
3 years ago
Bryan has 180 feet of fencing to fence off his rectangular garden. He will use the wall of his house as one side of the garden.
DiKsa [7]

there you go buddy ........

6 0
3 years ago
summer used 2/5 of her ground beef to make burgers. if she used 3/4 pounds of beef, how much beef did she have at first?
Gekata [30.6K]

Answer:

8/15

Step-by-step explanation:

7 0
3 years ago
Other questions:
  • Factor to write an equivalent expression: 26a - 10
    13·2 answers
  • What the correct answer
    9·2 answers
  • Create an expression that is equivalent to 8(x+5) without using parenthese
    15·2 answers
  • Need some help with these problems please.
    15·1 answer
  • Y/2*4-10/x+6 where x=5 and y=16
    13·1 answer
  • Which equation describes how the parent function, y = x cubed, is vertically stretched by a factor of 4?
    12·2 answers
  • Tell me the answer for each box
    9·2 answers
  • PLS I WILL GIVE BRAINLYIST
    11·1 answer
  • What is s?? <br> A 44° <br> B 35.3° <br> C. 37.9°<br> D. 22°
    9·1 answer
  • Camila is 4 years younger then her brother when camila was 7 how old was her brother
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!