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Margarita [4]
2 years ago
6

How do you add and subtract polynomials?

Mathematics
1 answer:
bekas [8.4K]2 years ago
4 0
Reverse the sign of each term you are subtracting and then add as usual. Hope this helps!

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If the measure of DAC is x and the measure of CAB is (2x – 30), what is the value of x? (HINT** remember how we label angles, th
Scorpion4ik [409]

Answer:

b

Step-by-step explanation:

∠ BAD = 90° and

∠ DAC + ∠ CAB = ∠ BAD, that is

x + 2x - 30 = 90

3x - 30 = 90 ( add 30 to both sides )

3x = 120 ( divide both sides by 3 )

x = 40 → b

6 0
2 years ago
A farmer has 7 3/4 rows of radishes in one field, 4 3/4 rows of radishes in another field, and 6 1/4 rows of radishes in a third
Gala2k [10]

Answer:

  A. 18 3/4

Step-by-step explanation:

It is convenient to rearrange the sum to make it easier to compute:

  7 3/4 + 4 3/4 + 6 1/4 = (7 3/4) +(4 +6) +(3/4 +1/4)

  = 7 3/4 + 10 + 1

  = 18 3/4

The farmer has 18 3/4 rows of radishes altogether.

4 0
2 years ago
Please help me, very important 20 points!
kipiarov [429]

x=96


all interior angles equal 180


Subtract exterior andgles by 180 to get interior angles because they are supplementary

180-134=46

180-130=50


Get the third angle inside the triangle

180-50-46=84


subtract by 180 to get x because they are supplementary

180-84=96


Therefore x =96

4 0
2 years ago
Equation of elimination method<br> 4a+b=28<br> a+4b=-8
Vilka [71]
Download an app called Photomath then it will answer it for you with work and explaining
6 0
2 years ago
If the simple interest on ​$6,000 for 2 years is ​$840​, then what is the interest​ rate?
ankoles [38]

Answer:

7 %

Step-by-step explanation:

  • i do not know if you use this but I use S.I=P×R/100×T
  • S.I=840
  • P for principal(the money you borrow or lend) =6000
  • T for time=2 years.
  • R for rate=???
  • In order to find out the rate, you need to substitute all these numbers into their respective places.
  • 840=6000×r/100×2
  • 6000/100=60
  • 840=60×r×2
  • 840=120r
  • r=7%
5 0
3 years ago
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