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pentagon [3]
3 years ago
5

Chris found a jacket regularly priced at $90, on sale for 20% off. If there is an 8% sales tax, how much did Chris pay?

Mathematics
1 answer:
Simora [160]3 years ago
5 0

Answer:

$77.76

Step-by-step explanation:

90 x .2 = 18 (20% off)

90 - 18 = 72 (sale price)

72 x .08 = 5.76 (tax price)

72 + 5.76 = 77.76 (total)

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What would be the exponent if you wrote 2,670 in scientific notation? Just write the number for your answer.
just olya [345]

Answer:

2.67 x 10^3

Step-by-step explanation

The exponent is equal to how many numbers are after the decimal point. So, since there are 3 numbers after the decimal point, the exponent would be 3. Hope this helps :)

4 0
3 years ago
Katie is buying souvenir.gifts for her big family back home. She wants to buy everyone either a key chain or a magnet. The magne
NikAS [45]
The total number of gifts = x+y.
The inequality is:
x+y  \geq 24

Key chains cost $1, Magnets $0.50
Total Cost = x + 0.5y
Inequality is:
x+0.5y  \leq 20

Without graphing you can solve system by using substitution:
y = 24 - x  \\  \\ x + 0.5(24-x) = 20   \\  \\ 0.5x +12 = 20  \\  \\ x = 16 \\  \\ y = 24-16 = 8

This is one solution where the maximum x value is given.
So the most keychains that can be purchased is 16. However, because magnets are cheaper, more can be purchased as long as cost remains under 20.

If you solve both inequalities for "y", you get the upper and lower bounds for how many magnets can be purchased given a quantity of keychains.

24-x  \leq y  \leq 40 -2x \\  \\ x \leq 16

This is complete solution which gives all possible combinations.
(Graph is Attached)

6 0
3 years ago
carley beat the school record for the 400 meter run by 1.3 seconds. if she ran the race in 55.7 seconds what was the record?
Vika [28.1K]

Answer:

If Carley ran the 400 meter run in a total of 55.7 seconds and she beat the record by 1.3 seconds, you would add 55.7 and 1.3

55.7+1.3= 57 seconds

The past school record for the girls 400 meter run was 57 seconds

Hope this helps ;)

4 0
3 years ago
Henry drove 60.2 miles in 7 days how many miles did he drive in 1 day?
igor_vitrenko [27]

Answer:

8.6

Step-by-step explanation:

60.2/7 =8.6

8 0
2 years ago
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Two sides of the triangle are 6 and 6. Which of the following could be the length of the third side?
sergejj [24]

Answer:

6

Step-by-step explanation:

6 0
3 years ago
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