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4 years ago

List the independent and dependent variables for each situation:

1 answer:

4 0

Part (a)

Independent variable = age
Dependent variable = height

"depends on age" indicates that age is independent.

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Part (b)

Independent variable = amount of sleep
Dependent variable = mood

The key word is "determines". The stuff before this word is the independent variable which affects the dependent variable.
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Part (c)

Independent variable = time water has been running
dependent variable = amount of water in the tub

Time is usually the independent variable
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Part (d)

Independent variable = speed
dependent variable = distance from home

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Part (e)

Independent variable = amount of homework done
dependent variable = speed

This seems like an odd pairing of homework and speed. Could there be a typo? I noticed that part (f) is very similar

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Part (f)

Independent variable = amount of hw that is assigned
dependent variable = amount of homework done

Like with part (a), the stuff before "depends" is the dependent variable

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3 years ago

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Kendra has $6.00 in dimes and quarters. If she has 2 times as many quarters as dimes, how many of each coin does she have?

r-ruslan [8.4K]

Make a system of equations.

$\sf0.10d+0.25q=6$
$\sf~q = 2d$

Plug in 2d for 'q' in the first equation:

$\sf0.10d+0.25q=6$

$\sf0.10d+0.25(2d)=6$

Multiply:

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$\sf0.60d=6$

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$\sf~d=10$

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$\sf~q = 2d$

$\sf~q = 2(10)$

$\sf~q = 20$

So she has 10 dimes and 20 quarters.

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4 years ago

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An item is priced at $13.24. If the sales tax is 5%, what does the item cost including sales tax?

cestrela7 [59]

B would be correct cause 5 percent would be .66

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4 years ago

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7b divided by 12=4.2 what is b

inn [45]

7b / 12 = 4.2
multiply both sides by 12

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3 0

3 years ago

How can we find how many inches wide the coat box is?

Alex777 [14]

Answer:

First we found the sum of 15.438 and 3.18. The subtract the answer from 32.476.

Option A is correct.

Step-by-step explanation:

The total width of box is = 32.476

Width of box of T-shirts = 15.438

Width of box of Socks = 3.18

We need to find width of coat box.

The width of coat box can be found as:

Total Width = Width of box of T-shirts + Width of box of Socks + width of coat box

32.476 = 15.438 + 3.18 + width of coat box

32.476 = 18.618 + width of coat box

width of coat box= 32.476 - 18.618

width of coat box = 13.858

So, The Width of coat box = 13.858 inches

First we found the sum of 15.438 and 3.18. The subtract the answer from 32.476.

Option A is correct.

5 0

3 years ago