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3 years ago

What is the answer to this 8-(-8)=

Mathematics

2 answers:

Stolb23 [73]3 years ago

6 0

Answer:

Step-by-step explanation:

personally I learned that when I see " -(- " in a equation it just means addition.

Komok [63]3 years ago

5 0

Answer:

Step-by-step explanation:

the two negatives cancel out so if you are subtracting -8 from 8 you would actually end up adding them.

hope it helps!

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I need help! I'm *so* confused! I will mark Brainliest

Naddik [55]

Answer:

(-2,21)

Step-by-step explanation:

2 days ago, Paulo's commute time was halfway between his commute times 8 and 9 days ago.

8 days ago means that x-coordinate -8 represents this day. Count 8 units to the left and find that when x = -8, y = 24 minutes.

9 days ago means that x-coordinate -9 represents this day. Count 9 units to the left and find that when x = -9, y = 18 minutes.

Find halfway commute time between points (-8,24) and (-9,18):

$y=\dfrac{24+18}{2}=\dfrac{42}{2}=21,$

then coordinates that Paulo should graph are

(-2, 21)

(-2 means 2 days ago, 21 is the halfway)

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3 years ago

If you are buying at item at a store for a price of $72, and there is a 6.2% tax added on top, what would be the total amount du

FrozenT [24]

Answer:

Sale Tax($): 4.5

Step-by-step explanation:

Before Tax Price ($): 72

Tax Rate (%): 6.2

Final Price Including Tax ($): 76.46

Sale Tax($): 4.46

5 0

3 years ago

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Please help me with this

MissTica

Answer:

For the question on the right, I assume b is the exponential factor, or growth factor.

Step-by-step explanation:

Linear:

$Y=aX + b\\(X, Y) = (0, 15) => b = 15\\(X,Y) = (1, 12) => a = -3\\Y = -3X + 15$

You can find the equation by using two points and the equation for a line.

Exponential:

$Y = a^{bX+c}\\(X, Y) = (0, 81) => a^{c} = 81 => a^{c} = 3^{4} => a=3, c=4\\(X, Y) = (1, 27) => a^{b+c} = 27 => a^{b}a^{c} = 27 => a^{b} = \frac{27}{81} = \frac{1}{3} => b=-1\\Y = 3^{-X+4}$

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3 years ago

Mental Math A typical tip in a restaurant is 15% of the total bill. If the bill is $110, what would the

Katarina [22]

Answer:

$16.50

Step-by-step explanation:

15/100*110

15/10*11

3/2*11

33/3

16.50

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3 years ago

How do you do 69% as a fraction? Please show work.

MakcuM [25]

69% is the same as .69, which is the same as 69/100

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3 years ago

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