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prisoha [69]
2 years ago
10

A chemist has 0.2 liters of an acid solution whose acid concentration is 65%. How many liters of pure water should be added to l

ower the concentration to 50%?
Mathematics
1 answer:
lorasvet [3.4K]2 years ago
4 0

Answer:

0.06

Step-by-step explanation:

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he original price of a tractor was $45,000. The price of the tractor decreases at a steady rate of 8.3% per year. What is the va
Debora [2.8K]
  • Answer:

<em>$29178.25</em>

  • Step-by-step explanation:

<em>x = p(1 - r)ⁿ</em>

<em>p = original price</em>

<em>r = 8.3% = 0.083</em>

<em>n = 5 years</em>

<em>x = $45000(1 - 0.083)⁵</em>

<em>= $45000ₓ0.917⁵</em>

<em>= $45000ₓ0.64840548256</em>

<em>= </em><em>$29178.25</em>

5 0
3 years ago
Plz help me!!!! What's the answer in decimal form?
marysya [2.9K]
When I did the math in my head the fraction I got was 20/100000. 20/100000 as a decimal form is 0.0002.
8 0
2 years ago
Read 2 more answers
Elena paints the back of a aquarium it has a height of 1 3/4 feet the painted area is 5 5/6 what is the length
Paladinen [302]

Answer:

3 1/3 feets

Step-by-step explanation:

Given that:

Height of aquarium = 1 3/4 feets

Area of aquarium = 5 5/6 ft²

The length of aquarium = x

Aquarium is shaped in the form of a rectangle :

Area of a rectangle = Length * width

5 5/6 = x * 1 3/4

35/6 = 7x/4

Cross multiply :

7x * 6 = 35 * 4

42x = 140

x = 140 / 42

x = 3 14/42

x = 3 1/3 feets

Hence, Length of the back of aquarium is 3 1/3 feets

7 0
3 years ago
5.6 x 5.6 x 6.16 x 6.16
ivann1987 [24]

Answer:

5.6 x 5.6 x 6.16 x 6.16=1190

Step-by-step explanation:

5.6 x 5.6 x 6.16 x 6.16=1189.974016

Rounded up will be 1190.

8 0
3 years ago
How many of the numbers from the set $\{1,\ 2,\ 3,\ldots,\ 50\}$ have a perfect square factor other than one?
Novay_Z [31]

Answer:

2^2 ( 1,2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)  =  4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 44,48

3^2(1,2,3, 5)   =  9, 18, 27, 45

5^2(1, 2)  = 25, 50

7^2  = 49

19  numbers

Step-by-step explanation:

5 0
3 years ago
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