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ivann1987 [24]
3 years ago
6

Copies of a famous painting were created at the local art museum for visitors to purchase. The copies had a 30% smaller area tha

n the original painting.
If the original painting had an area of 18 ft², what is the area of the copy, to the nearest tenth of a square foot?
Mathematics
1 answer:
lina2011 [118]3 years ago
6 0

Answer:

12.6 square feet

Step-by-step explanation:

So first we set it up:

18ft is 100% of the original

and the area of the copies are 70%

Copies: x

x/70 = 18/100

70(18) = 1260

1260/100 = 12.6

x = 12.6

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2. The set of whole number from 1 to 20
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Answer:

309 students

Step-by-step explanation:

Out of 600 students who complete the proficiency test, 423 were found to be proficient in reading, 398 were found to be proficient in math, and 512 were found to be proficient in either reading or math. How many were proficient in both reading and math?

We solve the above question using the formula below:

Where R = Proficiency in reading

M = Proficiency in maths

n ( R ∪ M) = n(R) + n ( M) - n ( R ∩ M)

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