2 years ago

20 out of the 80 students in Quad 6A have no sibling. What is the fraction of students have no siblings? (simplify the fraction)

Mathematics

1 answer:

I am Lyosha [343]2 years ago

3 0

Answer:

Step-by-step explanation:

20 ÷ 80 = 0.25

0.25 = ¼ or 1 quarter

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When a 40% of a number is added to the number and the result is 126 , what is the number ?

kozerog [31]

it would be 315. The simplest way to doing this would be by, first , doubling the number to make 252 which would add up to be 80%, and then divide 126 by 2 to get 63 which would be 20% ad by adding them all together you would get 315, which is equal to 100%.

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3 years ago

At an animal shelter there are 15 dogs 12 cats 3 snakes and 5 parakeets which animal has 80% of the number of another animal

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2 years ago

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SCORPION-xisa [38]

Answer:

Step-by-step explanation:

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2 years ago

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Veseljchak [2.6K]

Answer:

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2 years ago

How can 1/5x − 2 = 1/3x + 8 be set up as a system of equations? a . 5y − 5x = −10. 3y − 3x = 24 b. 5y − 5x = −10. 3y + 3x = 24 c

VMariaS [17]

The answer is d. 5y − x = −10. 3y − x = 24

$\frac{1}{5}x-2= \frac{1}{3}x+8=y$
⇒    $y= \frac{1}{5}x-2$
   $y= \frac{1}{3}x+8$
________________________
$y= \frac{x}{5} -2= \frac{x}{5} - \frac{10}{5} = \frac{x-10}{5}$
$y= \frac{x}{3} +8= \frac{x}{3} + \frac{24}{3} = \frac{x+24}{3}$
________________________
$y= \frac{x-10}{5}$ ⇒    $5y=x-10$
$y= \frac{x+24}{3}$   ⇒    $3y=x+24$
________________________
$5y-x=-10$
$3y-x=24$

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2 years ago