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gregori [183]
4 years ago
7

Write a variable expression for the amount of your budget after b books

Mathematics
1 answer:
wel4 years ago
8 0
Because if let's say you have 400$ for the year, and each book cost 10$. So it would be written as 400-10b since the quantity of books must be multiplied times their cost to calculate whether you are within or outside the budget. 
You might be interested in
Work out the answers to:
timofeeve [1]

Answer:

a) 50

b) 400

c) 8

d) 200

Step-by-step explanation:

a) 5 divided 0.1

  \frac{5}{0.1} = \frac{5 \times 10}{0.1 \times 10} = \frac{50}{1} = 50

b) 8 divided 0.02

   \frac{8}{0.02} = \frac{8 \times 100}{0.02 \times 100} = \frac{800}{2} = 400

c) 2.4 divided 0.3

  \frac{2.4}{0.3} = \frac{2.4 \times 10}{0.3 \times 10} = \frac{24}{3} = 8

d) 32 divided 0.16

   \frac{32}{0.16} = \frac{32 \times 100}{0.16 \times 100} = \frac{32 \times 100}{16} = 200

7 0
3 years ago
Read 2 more answers
Need this ASAP THANKS!!!
yarga [219]

Answer:

D

Step-by-step explanation:

Its on the same side while the rest are not

hope this helped

7 0
4 years ago
A shoe sales associate earned $300 in August. In September she earned 8% more than she did August. How much did you earn in Sept
jok3333 [9.3K]

300*(1+80%)

=300+180*

540

5 0
3 years ago
Read 2 more answers
Plz help my grade in math is a D and the quarter ends this week
igor_vitrenko [27]

Answer:

x=7

Step-by-step explanation:

if you look at this diagram as 2 triangles, the little one, and then the big one that the little one is inside of, and realize that they are similar triangles (by AAA standards) you can use a ration to solve the answer. the side length 9 is the length that is similar to side length 21, so you put those in a fraction format (9/21), and side length 3 is similar to side length x so you put those in a fraction (3/x), and then you create a ration with those

9/21=3/x

now you can cross-multiply 21 times three (63) and divide that number by 9 (7) to get your final answer of x=7.

Hope this helps!

5 0
3 years ago
I need help please someone
Vesnalui [34]

Answer:

B

Step-by-step explanation:

i think my answer or D but you can try

4 0
3 years ago
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