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Alja [10]
3 years ago
15

Helppp pleaseeeee !!

Mathematics
1 answer:
ki77a [65]3 years ago
4 0
The answer
Is third one bro
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For the following system, use the second equation to make a substitution for y in the first equation. 2 x + y = 5 y + 3 = 2 x
Anon25 [30]
2x+y=5
y+3=2x
y+3-3 = 2x-3
y= 2x -3

2x + y =5
2x + 2x -3 = 5


8 0
3 years ago
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a box contains 'n' quarters and some dimes. the ratio of quarters to dimes is 1:2. write an expression for the total number of m
True [87]
The ratio 1:2 means there are twice as many dimes as there are quarters.  An expression could be n=2d, n being number of quarters, d being number of dimes.
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3 years ago
Factorise :x^2-4x-21+10y-y^2​
Elenna [48]

Answer:

This cannot factor

Step-by-step explanation:

This cannot factor because there is no number that can be factored out of all of the terms.

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3 years ago
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aalyn [17]
The greatest common factor is 32

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3 years ago
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I need help with math. i attached a pic
wel

Answer:

C

Step-by-step explanation:

This one is quite easy. If you look angle M is slightly obtuse which means that it can't be A or B but it is to small to be D.

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