4 years ago

When you do a negative number minus a negative number do you get a positive?

1 answer:

8 0

You get a positive number because you can use the leave, change, change rule for the signs. After the rule it would be a minus + a positive. The answer will vary depend on the size of each number.

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What is this vertex of the graph ?

mina [271]

Answer:

(2,4)

Step-by-step explanation:

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4 years ago

Last week John made/has $50.00 from playing the lottery. This week he lost $25.00 playing the same lottery game. What is his per

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He lost 50% and he was 25 left I think

Step-by-step explanation:

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3 years ago

Yan is climbing down a ladder. Each time he descends 4 rungs on the ladder, he stops to see how much farther he has to go. If Ya

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3 years ago

Read 2 more answers

1/3y+1/4=5/12 i need 20 character

lys-0071 [83]

Y/3 + 1/4 = 5/12
4y/12 + 3/12 = 5/12
4y/12 = 2/12
4y = 2
/4 /4
y = 1/2

Therefore y = 1/2

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3 years ago

An inlet pipe on a swimming pool can be used to fill the pool in 30 hours. The drain pipe can be used to empty the pool in 34 ho

antoniya [11.8K]

Answer:

204 hours

Step-by-step explanation:

The filling speed is 30 hours or:

1/30 in an hour

The draining speed is 34 hours or:

1/34 in an hour

If both lines are open simultaneously, the filling speed is:

1/30 - 1/34 =
17/510 - 15/ 510 =
2/510 =
1/255 in an hour

If the tank is 1/5 full, then we need to fill the 4/5 of level and it will take:

4/5 : 1/255 =
4/5 *255 =
204 hours

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2 years ago