Is adding a negative always like taking away a positive ?

1 answer:

3 0

Well, to word it more easily, adding a negative is just subtracting.
Here are some examples to help:

10 - 5 = 5. right? so...
10 + (-5) = 5.

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9(m-3)+3m=7m+43 help me please

nikdorinn [45]

Answer:

multiply 9 from m and -3

9m - 27 + 3m = 7m + 43

12m - 27 = 7m + 43

12m - 7m = 43+ 27

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m = 14 answer ❤️❤️ it is 100% correct now!

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2 years ago

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Twin brothers, Billy and Bobby, can mow their grandparent's lawn together in 53 minutes. Billy could mow the lawn by himself

podryga [215]

5353 minutes = 89.22 hours
Maybe the figures should be 53 and 20??

Let's let Billy = A
The formula to use for work problems is
Time = (A*B) / (A+B)

53 = ( (A +20)* A) / (A +20 + A) )
53 = ( A^2 + 20A ) / (2A + 20)
A^2 + 20A -106A -1060
A^2 -86A -1060
A = 96.935
Bobby Mows in 116.935 minutes

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3 years ago

The photo down below will show you what I need help with.

Irina18 [472]

Answer:

$\frac{x+7}{3}$ (the second option)

Step-by-step explanation:

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3 years ago

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sukhopar [10]

Answer:

Step-by-step explanation:

$Hypotenuse = 10\\Opposite =e\\Adjacent =7\\\\Using\:Pythagoras\:Theorem\\Hypotenuse^2=Opposite^2+Adjacent^2\\10^2 =e^2 + 7^2\\100 =e^2+49\\100-49=e^2\\\\51 =e^2\\\sqrt{51} =\sqrt{e^2}\\ e = 7.141\\\\e = 7.1$

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