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SVEN [57.7K]
2 years ago
14

1/7 of the pupils in a class like dark chocolate. 1/2 of the pupils like milk chocolate and the rest prefer white chocolate. wha

t fraction of the class prefers white chocolate​
Mathematics
1 answer:
koban [17]2 years ago
7 0
14+50=64, leaving 36% prefer white chocolate or approximately 1/3
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815gal/h=_____qt/sec
AnnZ [28]

Answer:

Since there is 4 quarts in a gallon and 60 minutes in a hour.

60 x 60 = 3600

Multiply: 815  ×  4  =  3260  quarts per hour

So 3260/3600 = 326/360 = 0.905 quarts per second

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Solve this problem???​
Svetllana [295]

The denominator of the first term is a difference of squares, such that

4<em>a</em> ² - <em>b</em> ² = (2<em>a</em>)² - <em>b</em> ² = (2<em>a</em> - <em>b</em>) (2<em>a</em> + <em>b</em>)

So you can write the fractions as

(4<em>a</em> ² + <em>b</em> ²)/((2<em>a</em> - <em>b</em>) (2<em>a</em> + <em>b</em>)) - (2<em>a</em> - <em>b</em>)/(2<em>a</em> + <em>b</em>)

Multiply through the second fraction by 2<em>a</em> - <em>b</em> to get a common denominator:

(4<em>a</em> ² + <em>b</em> ²)/((2<em>a</em> - <em>b</em>) (2<em>a</em> + <em>b</em>)) - (2<em>a</em> - <em>b</em>)²/((2<em>a</em> + <em>b</em>) (2<em>a</em> - <em>b</em>))

((4<em>a</em> ² + <em>b</em> ²) - (2<em>a</em> - <em>b</em>)²) / ((2<em>a</em> - <em>b</em>) (2<em>a</em> + <em>b</em>))

Expand the numerator:

(4<em>a</em> ² + <em>b</em> ²) - (2<em>a</em> - <em>b</em>)²

(4<em>a</em> ² + <em>b</em> ²) - (4<em>a</em> ² - 4<em>ab</em> + <em>b</em> ²)

4<em>ab</em>

<em />

So the original expression reduces to

4<em>ab</em> / ((2<em>a</em> - <em>b</em>) (2<em>a</em> + <em>b</em>))

or

4<em>ab</em> / (4<em>a</em> ² - <em>b</em> ²)

upon condensing the denominator again.

8 0
3 years ago
A student was asked to rewrite using only the associative property of multiplication. Which is the correct response?
tatiyna

Given that the associative property of multiplication says that you can group the numbers in any combination, we can reorganize the expression as: 7·(10·3)=210. So the answer would be the first option.

3 0
11 months ago
Help me with this problem please.
melomori [17]

Answer:

your the problem

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
Can you help me please??
VLD [36.1K]
B.6 would be the right answer because thats the ratebin which it drops
6 0
3 years ago
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