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Iteru [2.4K]
3 years ago
5

Thomas bought several paintbrushes for $4 each. He paid with a $20 bill. The expression 20 – 4n is used to determine how much ch

ange Thomas receives. What does the variable n represent?
Mathematics
1 answer:
Tresset [83]3 years ago
4 0

Answer:

the variable n represents how many of the product thomas bought

Step-by-step explanation:

20 dollars is the initial amount of money, and for every paintbrush, you have to subtract 4 dollars from thomas's initial amount, and the result of the subtraction is the amount of change he will recieve.

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PLEASE HELP ME!!!!!!!!!!!!!!!!!!
lilavasa [31]

Answer:

a) 4 - vt - d = \frac{1}{2} at^{2}

b) 1 - 2(vt - d) = at^{2}

c) 6 - \frac{2(vt - d)}{t^{2}} = a

Step-by-step explanation:

It simply asks the steps to go from the original displacement formula to isolate a (the acceleration).  It's just a matter of moving items around.

We start with:

d = vt - \frac{1}{2} at^{2}

We then move the vt part on the left side, then multiply each side by -1 (to get rid of the negative on the at side and to match answer choice #4):

vt - d = \frac{1}{2} at^{2}

Then we multiply each side by 2 to get rid of the 1/2, answer #1:

2(vt - d) = at^{2}

Finally, we divide each side by t^2 to isolate a (answer #6):

\frac{2(vt - d)}{t^{2}} = a

4 0
3 years ago
How do I show exponents when writing a problem out here
Brums [2.3K]

Answer:

1.you use a "carrot" it looks like this ^ so you put 6^3 an that is saying 6 to the power of 3

2. you can also use the symbols option and there is shows little numbers but only gives you the option for the power of 2 and 3

example: 6³

3. click equation option and put the x^2 and then delete the x and put the number or variable and then within the brackets put what the power should be.

Step-by-step explanation:

3 0
3 years ago
-4/5 + -1/4<br> What does this equal
ki77a [65]
-4/5 + (-1/4) = 
-4/5 - 1/4 = (common denominator is 20)
-16/20 - 5/20 =
-21/20 or - 1 1/20 <=== ur answer
7 0
3 years ago
Read 2 more answers
To find the quotient StartFraction 5 Over 7 EndFraction divided by one-third,
SVETLANKA909090 [29]

Answer:THE FIRST ONE

Step-by-step explanation:

JUST TRUST ME

6 0
3 years ago
Read 2 more answers
Which number line represents the solution to the inequality 125x + 200 &gt; 1,200?
Elza [17]

Answer:

see below

Step-by-step explanation:

25x + 200 > 1,200

Subtract 200 from each side

25x + 200-200 > 1,200-200

25x> 1000

Divide by 25

25x/25 >1000/25

x>40

6 0
3 years ago
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