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tankabanditka [31]
3 years ago
5

I need help fast! This is polynomials help

Mathematics
1 answer:
antiseptic1488 [7]3 years ago
5 0

Answer:

  • incorrect
  • correct
  • incorrect

Step-by-step explanation:

A + B = (-4x^2 +2x -5) +(3x^2 +6) = x^2(-4+3) +x(2) +(-5+6) = -x^2 +2x +1

  The given sum is Incorrect.

__

A - C = (-4x^2 +2x -5) -(-5x -4) = -4x^2 +x(2+5) +(-5+4) = -4x^2 +7x -1

   The given difference is Correct.

__

B + C = (3x^2 +6) +(-5x -4) = 3x^2 -6x +2

  The given sum is Incorrect.

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hey i know this may be a lame question but can anyone help me how can i multiply 16 with 3,142 (with steps) ?? :/
vovangra [49]

Answer:

50272

Step-by-step explanation:

Okay how I solve these equations is I take the problem apart like this:

3142 = 3000 + 100 + 40 + 2

Now we multiply each number by 16:

3000 * 16 = 48000

100 * 16 = 1600

40 * 16 = 640

2 * 16 = 32

Then we add all the totals together:

48000 + 1600 + 640 + 32 = 50272

Hope this Helps ;)

8 0
2 years ago
-24x+8y=16 <br><br> what is y?
Rashid [163]
-24x + 8y = 16
+24x            +24x

8y = 16 + 24x

8y/8 = 16/8 + 24x/8

y = 2 + 3x

Answer: y = 2 + 3x
7 0
3 years ago
It takes 16 minutes for 9 people to paint 8 walls.how many does it take 4 people to paint 6 walls
luda_lava [24]
The things you can apply to complete this job is workers and time. The job being accomplished is painted walls. This problem defines two jobs. The rate for each of the jobs will be the same. The first job rate is: R=(7 wkr)•(42 min)/(6 walls)R= 49 wkr-min/walls or 49 worker-minutes per wall. This means one worker can paint one wall in 49 minutes. If you think about this job if 7 workers take 42 minutes to do 6 walls it will only take them 7 minutes to do one wall. And it will take one person 7 times as long to do a job as 7 people working together.  This first job rate equals the second job rate R=(8 wkr)•(t )/(8 walls)R=1 t wkr/wall where t is the time to do the second job. Setting the two rates equal to each other and solving for t. t=49 minutes It makes sense if one worker can paint one wall in 49 minutes then 8 workers can paint 8 walls in the same time.  
5 0
3 years ago
Read 2 more answers
What does math mean to you?
leva [86]

Answer:

Mathematics uses numbers and data to find ways to describe relationships, importance, value, dependency/independency of variables, and many other things. These computations and concepts are essential to the world because of our human need to make comparisons and place value on things.

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
The largest angle of a triangle is 60° larger than the smallest angle. the middle angle is triple the measure of the smallest an
Alex787 [66]
Total degree in triangle is 180.
so, 180= x + 3x + (x+60)
180 = 5x +60
5x = 180-60
5x = 120
x = 24
Largest angle is 84
Middle angle is 72
Smallest angle is 24
5 0
2 years ago
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