3 years ago

What does this symbol tell you to do (:) ?

Mathematics

1 answer:

Monica [59]3 years ago

4 0

Answer:

That separeates the problem

Step-by-step explanation:

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Please help! i’ll give brainliest! thank u!

Ivenika [448]

Answer:

Negative with little correlation

It has negative slope if you imagine a line

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3 years ago

A coin bank has 250 coins, dimes and quarters, worth $39.25. How many of each type of coin are there?

Brilliant_brown [7]

$x-\ number\ of\ dimes\\y-\ number\ of\ quarters\\\\ \left \{ {{x+y=250\ \ \ | x=250-y} \atop {0.1x+0.25y=39.25\ \ \ \ \ \ \ \ \ \ \ \ \ }} \right. \\\\ substitution\ method\\\\
0.1(250-y)+0.25y=39.25\\\\
25-0.1y+0.25y=39.25\\\\
25+0.15y=39.25\ \ \ \ | subtract\ 25\\\\0.15y=14.25\ \ \ \ | divide\ by\ 0.15\\\\y=95\\\\x=250-95=
155\\\\
There\ are\ 155\ dimes\ and\ 95\ quarters.$

8 0

3 years ago

25 points! Please help!

Annette [7]

Answer: 15 minutes

Explanation:

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3 years ago

Read 2 more answers

Hilda runs 2/3 of a mile in a half-hour. If she continues to run at a constant rate, how many miles will she run in 3 hours?

Naddika [18.5K]

2/3 a mile in half an hour
3 hours=6 x 2/3
6/1 x 2/3 = 12/3
12/3 =4 miles in 3 hours

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4 years ago

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SOLVE BY ELIMINATION.<br><br> x-2y=2<br> 3x+y=6

USPshnik [31]

$\left \{ {{x-2y=2} \atop {3x+y=6\ |\cdot2}} \right. \\\\ \left \{ {{x-2y=2} \atop {6x+2y=12}} \right. \\+-----\\\\7x=14\ \ \ \ |:7\\x=2\\\\2-2y=2\\-2y=2-2\\-2y=0\\y=0\\\\ \left \{ {{y=0} \atop {x=2}} \right.$

7 0

3 years ago

What does this symbol tell you to do (:) ?​

What does this symbol tell you to do (:) ?