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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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Using the Segment Addition Postulate, find the value of m.
Naya [18.7K]

Answer:

36

Step-by-step explanation:

AB + BC = AC

4m - 15 + 5m - 6 = 15

m - 21 = 15

m = 36

4 0
3 years ago
Solve the system of equations. Show ALL your work. Put your answer in the form of an ordered pair (x, y)
stiv31 [10]
This should be easy because we just have to use substitution method. Substitute the value of x from the second equation into the x of the first equation. 
                         -4(2y) + 11y = 15
                         -8y + 11y = 15
                                   3y = 15   ; y = 5
Substitute this value of y to either the first or second equation.
                                        x = 2(5) = 10
The ordered pair is therefore (10,5).
6 0
3 years ago
Consider the following number line:
Tatiana [17]
Point A - 1
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Point C - 1/3

MARK ME BRAINLIEST TYSM!
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8 0
2 years ago
Is 3.14 irrational or rational
mixas84 [53]

Answer:

rational

Step-by-step explanation:

3 0
3 years ago
79 x 31 rounding or compatible numbers . show how you estimate
Lubov Fominskaja [6]

Answer:

80 × 30 = 2,400

Step-by-step explanation:

We can easily round 79 up to 80 and round 31 down to 30. This would make our expression 80 × 30, which is much easier to compute. We just take 8 × 3 (which is 24) and add two zeros onto the end of the number. This yields us an answer of 2,400 which is very close to the actual multiplication of 79 × 31 which is 2,449 (only 49 more than our estimation).

8 0
2 years ago
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