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ValentinkaMS [17]
3 years ago
6

A store offers 20% off all items. If x is the original purchase price, which expression represents the final price with the disc

ount? Select all that apply. A. 1.2x B. 0.8x C. x D. x – 0.2x E. x + 0.2x
Mathematics
2 answers:
denis23 [38]3 years ago
6 0

Answer:

B & D

Step-by-step explanation:

We use percents in decimal form to multiply it with the price. We convert percents into decimals by dividing the percent number by 100. For example, 78% divided by 100 becomes 0.78.

There are two ways to look at it:

  • For finding the price we pay during a sale, we focus on the percent we pay. If 22% off is the sale, then we spend 78% or 100-22=78. If 20% off is the sale, then we pay 80% or 0.80. Multiply that by x an unknown price and we have 0.8x.
  • We can find the percent off by multiplying the price by the percent conversion. So 20% is 0.20. Then subtract it from the original price to find the leftover that we pay. This is x-0.2x.


likoan [24]3 years ago
3 0

Answer:

B + D

Step-by-step explanation:

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const2013 [10]
S_7=-4+24-144+864-5184+31104-186624
S_7=-4(1-6+36-216+1296-7776+46656)
(-6)S_7=-4(-6+36-216+1296-7776+46656-279936)
S_7-(-6)S_7=-4(1+279936)
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4 0
3 years ago
Suppose that an individual has a body fat percentage of 16.8% and weighs 152 pounds. How many pounds of his weight is made up of
natka813 [3]
<h3>Answer: 25,5 p</h3>

Step-by-step explanation:

  • 16 , 8 % = ? p
  • 100% = 152 p

  • \pmb {? =\dfrac{152\cdot 16, 8}{100}=25, \underline 536 p\approx25,5  p  }
4 0
3 years ago
Any answers? No need for an explanation if you want to sure, the answer would be appreciated!
KIM [24]

Answer:

B

Step-by-step explanation:

B: it is only a single equation

8 0
3 years ago
The total cost of $4 sharpeners and $7 folders is $30.05. If the cost of a sharpener is $a, and a folder is $2.80 more expensive
raketka [301]

9514 1404 393

Answer:

  a = $0.95

Step-by-step explanation:

The cost of a sharpener is 'a', and the cost of a folder is $2.80 more, so is a+2.80. The total cost of 4 sharpeners and 7 folders is ...

  4a +7(a+2.80) = 30.05

  11a = 10.45 . . . . . . . . . . . subtract 19.60

  a = 0.95 . . . . . . . . . . . divide by 11

The cost of a sharpener is a = $0.95.

7 0
3 years ago
A metallic spherical ball of radius 14 cm is being melted and recast it into spherical balls of radius 2 cm. How many spherical
mojhsa [17]

Volume of sphere = 4/3 x pi x r^3

Volume of large sphere:

4/3 x 3.14 x 14^3 = 11488.21 cubic cm

Volume of smaller sphere:

4/3 x 3.14 x 2^3 = 33.49 cubic cm

Number of small spheres = volume of large sphere/ volume of small sphere

11488.21 / 33.49 = 343.03

Round to 343 small spheres

4 0
3 years ago
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