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andreyandreev [35.5K]
3 years ago
5

Can someone help me on these two cuz honestly I don't know

Mathematics
2 answers:
harina [27]3 years ago
5 0

Answer:

-a+-b= negative

a-(-b) =positive

-a-b= negative

Step-by-step explanation:

aliina [53]3 years ago
3 0

Answer:

1. -a + b = depends on which integer is bigger, if b is bigger than a, then it would be positive. If -a is bigger, then it will be negative

2. a-(-b) = positive

3. -a * b = negative

a. 87 + 65    b. -58+42

c. 73+(-55)   d. -47+(-30)

Step-by-step explanation:

Remember:

two positives(multiply or divide) = positive

two negatives(multiply or divide) = positive

a positive and a negative(multiply or divide) = negative

two positives(addition) = positive, (subtract) = depends on which integer is bigger

two negatives(addition) = positive, (subtract) = depends on which integer is bigger

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poizon [28]

Answer:

12

Step-by-step explanation:

The general formula for this is

Formula

1/t1 + 1/t2 = 1/t_tot

givens

t1 = 6 hours

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t_tot = 4 hours

Solution

1/6 + 1/x = 1/4                 Subtract 1/6 from both sides.

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1/x = 3/12 - 2/12              subtract

1/x = 1/12                         Cross multiply

x = 12

Tom would need 12 hours to do the job alone.

4 0
3 years ago
Read 2 more answers
If the Lafita family deposits 8500$ ina savings account at 6.75% interest, compounded continuously, how much will be the account
julsineya [31]
A=pe^rt
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8 0
4 years ago
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Anastasy [175]

Answer:

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Step-by-step explanation:

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6 0
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Good luck.
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