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Ierofanga [76]
3 years ago
15

Help me slove these 3 problems

Mathematics
1 answer:
igomit [66]3 years ago
4 0
3) Take the original price and subtract the original price * the discount percentage

99.50 - (99.50 * 0.50)
99.50 - 49.75
49.75
Option C is your answer.

4) Take the original price and add the original price * the tax rate

99.50 + (99.50 * 0.04)
99.50 + 3.98
103.48
Option D is your answer.

5) Take the original price and add the original price * the markup rate

3.95 + (3.95 * 0.20)
3.95 + 0.79
4.74
Option D is your answer. 
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crimeas [40]
It’s C. hope this helped and good luck !!
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3 years ago
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A flashlight has 7 batteries, 5 of which are defective. If 5 are selected at random without replacement, find the probability th
TEA [102]
71.4 % chance I think is your answer. 
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3 years ago
Which is f(-1) for the function f(x)= 3x^2+9
blsea [12.9K]

Answer:

C.  f(-1) =12

Step-by-step explanation:

f(x)= 3x^2+9

Let x=-1

f(-1) = 3(-1)^2 +9

      = 3(1)+9

      = 3+9

      = 12

f(-1) =12

4 0
3 years ago
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At 2:00 PM the temperature is 18°F. At 10:00 PM the temperature is -9°F.
Diano4ka-milaya [45]

Answer:

To figure out the change, we subtract the original temperature by the following after temperature.

18°F - original

-9°F - subsequent time after original

So we set up the equation;

18°F - (-9°F)

(Two negatives combine to form a positive)

18°F + 9°F

= <u>27°F</u> was the change in temperature.

4 0
3 years ago
Plz help I will give brainliest!
elena55 [62]

Answer:

b, 1 5/8

Step-by-step explanation:

the area is 4 15/32 square meters, and you find the area by doing length x width. the length is provided, 2 3/4. so all you have to do is divide 4 15/32 by 2 3/4 and you get 1 5/8

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3 years ago
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