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4 years ago

5

Julia is evaluating the expression 40-6W + 2 When W= 4. What should be Julia's first step in order to evaluate the expression co

rrectly? A. multiply 6 by 4 B.add 2to 4 C.subtract 6 from 40 D. add 2 to 4

1 answer:

adoni [48]4 years ago

3 0

Answer:

A. multiply 6 by 4

Step-by-step explanation:

40-6W + 2

Let w = 4

Substitute 4 for w

40 -6(4) +2

40 - 24 +2

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In a hall,45%of the pupils were boys.there were 990 boys.how many pupils were there on the hall?

morpeh [17]

Your answer is 2,200 pupils.

If 990 is equal to 45% of the total amount of pupils, then to find 1% we can divide both 45 and 990 by 45.

990 ÷ 45 = 22, which is 1%, so then we multiply 22 by 100 to get 100% of the pupils, which gives us 2,200.

I hope this helps!

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3 years ago

The length of a room is 18

Virty [35]

<em><u>Question:</u></em>

The length of a room is 18 1 /2 feet. If using 1 /4 inch = 1 foot scale, what would be the length of a wall on a blueprint of a floor plan?

<em><u>Answer:</u></em>

The length of a wall on a blueprint of a floor plan is $4.625 \text{ or } 4\frac{5}{8} \text{ inches }$

<em><u>Solution:</u></em>

Given that,

$Length\ of\ room = 18\frac{1}{2} \text{ feet }\\\\Length\ of\ room = 18.5 \text{ feet }$

The scale given is:

$\frac{1}{4}\ inch = 1\ foot$

To find: Length of a wall on a blueprint of a floor plan

Let "x" be the length of a wall on a blueprint of a floor plan

Then from given,

$\frac{1}{4}\ inch = 1\ foot\\\\x\ inches = 18.5\ feet$

This forms a proportion and we can solve by cross multiplying

$\frac{1}{4} \times 18.5 = x \times 1\\\\x = 4.625\\\\In\ terms\ of\ mixed\ fraction,\\\\x = 4\frac{5}{8}$

Thus length of a wall on a blueprint of a floor plan is $4.625 \text{ or } 4\frac{5}{8} \text{ inches }$

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3 years ago

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Vlad1618 [11]

Answer:

32

Step-by-step explanation:

ok if it was a normal rectangle =

8 x 6

but the middle part takes 4 from the middle

since there are 2 rectangle

4/2 = 2

since there are lines

6 x 2 = 12 + another 12 since the rectangle on the bottom is the same as the top

24 + ...

6 - 4

2 x 4 = 8

24 + 8 =

32

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