MATHEMATICS MIDDLE SCHOOL

Add: 3x(x-y+z) and 2y (x+y-z)​

Answers

Answer 1
Answer:

Answer:

3x^2 + 3xz + 2y^2 - 2yz - xy

Step-by-step explanation:

(1) multiply it to get

3x^2 - 3xy + 3xz and 2yx + 2y^2 - 2yz

add similar variables (-3xy + 2yx)

( the order of the variables doesn't matter xy or yx is the same)

we get -xy

and then after that simplifying we get 3x^2 + 3xz + 2y^2 - 2yz - xy
Answer 2
Answer:

Answer:

Step-by-step explanation:

hello :

3x(x-y+z) + 2y (x+y-z)​ =  3x²-3xy+3xz +2yx+2y²-2yz

3x(x-y+z) + 2y (x+y-z)​ = 3x² -xy+3xz -2yz+2y²

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How do I solve this equation? If 3t-7=5t then 6t=

a 21
b-7
c-21
d-42

Answers

If 3t – 7 = 5t, then 6t =
Let’s first solve the first equation:
=> 3t – 7 = 5t
=>  3t – 5t = 7
=> -2t = 7
=> t = 7 / -2
=> t = -7/2

If t = -7/2 , then 6t = 6 (-7 / 2)
=> t = -42/2
=>  t = - 21 Thus, the value of t in If 3t – 7 = 5t is -7/2
and the value of t in 6t = is -21
The answer is C.



myles and stephen participated in the long jump at the track meet . Myles jumped 4 7/10 meters. Stephens jump was 3 4/5 meters whose jump was further and by how much...

Answers

you would have to subtract both of them and you will get 9/10 stephens jump was further

Does a polygon have more sides or angles

Answers

A regular polygon has the same amount of sides and angles
It depends on the size, but a normal or regular have the same sides and angles. 

. Marcus has 50 tokens to spend at the schoolcarnival. The Ferris wheel costs 7 tokens and
the carousel costs 5 tokens. The inequality
7x + 5y = 50 represents the possible ways
Marcus could use his tokens on the two rides.
Is the ordered pair (6, 3) a solution for the
problem situation?

Answers

Answer:

The ordered pair (6,3) can not be a solution for the problem situation.

Step-by-step explanation:

Marcus has total 50 tokens to spend at the carnival.

Now, given that the Ferris wheel costs 7 tokens and  the carousel costs 5 tokens.

So, if Marcus play the Ferris wheel for x times and the carousel for y times, the total expenditure will be given by

7x + 5y = 50 ............ (1)

Now, the ordered pair (6,3) i.e. x = 6 and y = 3 does not satisfy the above relation equation (1).

So, the ordered pair (6,3) can not be a solution for the problem situation. (Answer)

Frank's Football Gear is having a sale on helmets. The sales price, not including tax is $125.50. If the sale is 30% off all helmets, what is the regular price of the helmet to the nearest cent?

Answers

The regular price for the football helmet would be $179.29.

What is m∠V ???????????????

Answers

Answer:

58

Step-by-step explanation:

52+24=76

180-76=104

104+18=122

180-122=58

V=58
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