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Korvikt [17]
3 years ago
9

Which is the best estimate for this expression ?a) 300 b) 40c) 3d)0.4​

Mathematics
1 answer:
Zolol [24]3 years ago
5 0

Answer:

A

Step-by-step explanation:

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Eliminating by multiplying <br> X+3y=1<br> -5x+4y=-24
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Answer:

y = -1         x = 4

Step-by-step explanation:

(X+3y=1) 5            Multiply this equation by 5 to cancel out the x

-5x+4y=-24

-5x + 4y= -24

+ 5x + 15y = 5       Add both equations together

19y = -19                Divide both sides by 19

y = -1

Plug -1 for y into one of the equations

x + 3(-1) = 1             Multiply 3(-1)

x - 3 = 1

 + 3 + 3                  Add 3 to both sides

x = 4  

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3 0
3 years ago
Sylvia is changing the light bulbs of the big light fixture in her dining room. She finished 1 5 of the bulbs in 10 minutes. Wha
san4es73 [151]

Answer:

D

Step-by-step explanation:

5/5 -1/5=4/5

4 0
3 years ago
Ms. Lee works at a pizzeria. She delivers an average of 3 pizza orders per hour. The pizzeria is offering a bonus to employees w
alexandr1967 [171]

Answer:

58 hours.

Which can also be 2days 10 hours.

Step-by-step explanation:

3 pizza orders = 1hour

200 deliveries per month= bonus

26 orders so far this month.

X= 200-26= 174

174 divided by 3 = 58 hours.

6 0
3 years ago
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