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Roman55 [17]
3 years ago
5

1/2 - 1/7 3/5 - 1/2 plz help I have 10 min

Mathematics
1 answer:
Marina86 [1]3 years ago
7 0

Step-by-step explanation:

1/2-1/7=5/4

3/5-1/2=1/10

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X + 2y =6<br> X- y =3<br> Solution?
VikaD [51]
Since one equation has a negative y and the other has a positive y, I'm going to use those since they cancel each other out. Before that, the two y's need to be equal to each other.

x+2y=6
x-y=3

Multiply the bottom equation by two so then you have:

x+2y=6
2x-2y=6

The y's now cancel out:

x=6
2x=6

Add them together

3x=12

Divide

x=4.

To find y, plug x into either equation (*don't have to do both, but I will)

(4)+2y=6
(4)-y=3

Subtract four

2y=2
-y=-1

Divide each

2y/2 = 2/2
y=1

-y/-1 = -1/-1
y=1

The answer is:
x=4
y=1

I hope that helps!
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3 years ago
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Arun needs to buy 834 pounds of potting soil to fill a large flowerpot. Potting soil costs $0.60 per pound, including tax. What
ivanzaharov [21]

Answer:

$500.4

Step-by-step explanation:

6 0
3 years ago
The symbol dg stands for
sergey [27]
Dg stands for "differential geometry"

hope this helps
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2 years ago
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Max is making slime. The directions say he needs 4 parts water to one part glue. How much glue would he need for 1 part of water
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Step-by-step explanation:

4 parts of water is to 1 part of glue

Then 1 part of water is to 1/4 parts of glue.

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3 years ago
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3) The average age of students at XYZ University is 24 years with a standard deviation of 8 years. Number of students at the uni
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Answer:

0.1875

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σM=σ/√N

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Z=(x-μ)/σ/√N

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=-10.5/0.0092=-1141.304

Z score = -1.3125

=(27-36)/8/√7500 =

=9/0.0092=978.261

Z score= -1.125

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The probability that the sample mean will be between 25.5 and 27 years

P(between 25.5 and 27) = 0.1875

3 0
2 years ago
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