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Pie
3 years ago
13

Find: (4x2y3 + 2xy2 – 2y) – (–7x2y3 + 6xy2 – 2y)

Mathematics
1 answer:
Ivahew [28]3 years ago
8 0

Answer:

10x2y3 -4xy2

Step-by-step explanation:

Just take the like terms and separate them-

1) 4x2y3 - (-7x2y3)= 10x2y3

2)2xy2 - 6xy2= -4xy

3)-2y - (-2y)= 0y

Hope this helps :)

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Please help! I am so confused
levacccp [35]

Answer:

The second option, y + 2x = 10, is the correct answer for this problem.

Step-by-step explanation:

There are many different ways to solve this problem.  I am going to pick a point represented in the table and plug its values into the given equations to find the correct response.

From the table, we can conclude that the point (0,10) must satisfy the equation.  This means that if we plug in 0 for x and 10 for y into the equations below, we should get a true statement.

y - 2x = 14

10 - 2(0) = 14

10 = 14

Since 10 is not equal to 14, we know that the first option is incorrect.

y + 2x = 10

10 + 2(0) = 10

10 = 10

Therefore, the second option may be our answer, but we should make sure the other options are incorrect.

2y + x = 23

2(10) + 0 = 23

20 = 23

Since 20 is not equal to 23, we know that the third option is incorrect.

y + x = 11

10 + 0 = 11

Since 10 is not equal to 11, we know that the fourth option is also incorrect.

Since the second option is the only answer that yielded a true statement when a point from the table was plugged in, we can conclude that the second option (y + 2x = 10) is the answer.  If you wanted to make sure, you could plug in each of the points represented in the table and confirm that they too make the equation true.

Hope this helps!

8 0
3 years ago
HELPPPPPPPPPPPPPPPPPPPPPP
RideAnS [48]

Answer:omg I gotchu I just learned these for the letters for example would be q/1 times 2/7 because if you have one letter or number you ALWAYS put a one under it then u multiply another easy trick don’t butterfly multiply go straight across and example 8/1 (all ways add the one) times 3/4. Ok how to multiply that always go across so it would be 8x3 and 1x4 your answer should be 24/4 and simplify if needed

Step-by-step explanation:

4 0
2 years ago
I need help can someone help you can get 10 points
Nuetrik [128]

Answer:

Im not sure if i can give you the entire answers, but its quite simple. A straight line=180 degrees, so subtract 112 by 180 and you get lines 1 and 3. Line 2 is just 112 because its just "flipped", so its the same number.

Step-by-step explanation:

3 0
3 years ago
Are the triangles similar? If so, determine the scale factor of POR and EFD? A) No B) Yes; 2:1 C) YES;4:5 D) Yes; 17:10
sergij07 [2.7K]

Answer:

C) yes

Step-by-step explanation:

4 0
3 years ago
Which algebraic expression represents the phrase "seven more than half of a number”?
Daniel [21]
Answer:

7+ x/2

Step by step explanation:

“Seven more” is addition in word form, and “half of a number” refers to a variable (in this case x) being divided by 2. Hope this helps! :)
8 0
2 years ago
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