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slava [35]
3 years ago
8

Wren bought a baseball card last year for $2.25. This year the price dropped to $.45. What was the percent of decrease in the pr

ice of the card?
A. 80%
B. 500%
C. 120%
D. 400%
Mathematics
1 answer:
const2013 [10]3 years ago
4 0
The price:
- last year: $2.25
- this year: $.45
The decrease: $2.25 - $.45 = $1.80
2.25 : 1.80 = 100 : x
2.25 x = 180
x = 180 : 2.25
x = 80
Answer:
The percent of decrease is  A ) 80%
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Usimov [2.4K]

Answer:

The percentage of workers not wearing the helmets is 5.3 %.

Step-by-step explanation:

A safety committee randomly examined 900 construction workers during their work, and found that 48 workers were not wearing helmets. Estimate the percentage of workers who do not wear protective masks during their working time with 98% confidence

total workers = 900

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Percentage which are not wearing the helmets

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6 0
3 years ago
Manas receives a commission of Rs.5,000 on sales of Rs.65,000.How much commission will he get on sales of Rs.20,000.
tangare [24]

\\
\text{Let Manas receives a commission of Rs. 5000 on sales of Rs. 65000}\\
\\
\text{We need to find how much commision he will get on the sale of Rs.20000}\\
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\text{To find the commision, we use the unitary method.}\\
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\text{On sales of Rs. 65000, Manas receives a commision of}=5000\\
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\text{so on sales of Rs. 1, Manas will receiv a commision of}=\frac{5000}{65000}\\
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\text{Hence on sales of Rs. 20000, Manas will receiv a commision of}\\
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Hence, on the sales of Rs. 20000, Manas will receive a commission of: Rs. 1538.46

6 0
3 years ago
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Gemiola [76]
The first one is 20 and the second one is 19 and the third one is 25 and the fourth one is 15 and the fifth one is 11 and the sixth one is 28
5 0
2 years ago
What is the simplified form of the expression? (m^-1m^5/m^-2)^-3
Eva8 [605]
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5 0
3 years ago
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Reptile [31]

Answer:

It is the 3rd choice. It is 4 times as big as the smaller cylinder

Step-by-step explanation:

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r - radius

h - height

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enter into a calucaltor and you get 282.74

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= π(6)2(10)

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3 years ago
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