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Nady [450]
3 years ago
9

Write an expression that is equivalent to x+x+x+x+-20

Mathematics
1 answer:
Aleksandr [31]3 years ago
5 0

Answer:

4x-20

Step-by-step explanation:

you put the x's together and since its negative,you can make it -20 instead of +-20

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SOMEONE PLEASE HELP ASAP!!!!!
Margaret [11]

Answer:

<em>x = 1</em>

<em>y = 1</em>

Step-by-step explanation:

<u>System of Equations</u>

We are given the system of equations:

2x + y = 3

x = 2y - 1

Substituting x in the first equation:

2(2y - 1) + y = 3

Operating:

4y - 2 + y = 3

5y = 3 + 2

y = 5/5 = 1

y = 1

Since:

x = 2y - 1

Then:

x = 2(1) - 1

x = 1

Solution:

x = 1

y = 1

7 0
3 years ago
At the grocery store, you want to get two things. You want a gallon of milk, which costs $2.79. You also want a loaf of bread, w
Olenka [21]

Answer:

this is so easy haha am i missing a picture or smth? anyways just add the two prices together (milk and bread) to get $4.78

4 0
3 years ago
Simplify (n+3)(n-9)
Katarina [22]
From multiplying the binomial expression

(n+3)(n-9)

It would be n^2 - 9n + 3n - 27 or simplified

n^2 -6n - 27.
6 0
3 years ago
If I cleaned 38 windows in 2 hours then how many windows will I clean in 7 hours
Bumek [7]

Answer:

133

Step-by-step explanation:

38/2=19

1 hour = 19 clean windows

7 hours *19 =133

6 0
3 years ago
Read 2 more answers
How much degrees is each interior angle of a octagon
umka21 [38]
Hello.

The answer is 180 degrees.

all the lines and angels are the same size and has perfect symmetry.

so all are 180.

Have a nice day
4 0
3 years ago
Read 2 more answers
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