1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Vesna [10]
3 years ago
12

Mike bought 16 paperback books at the used book store for $10.95. Some cost $0.60 and some cost $0.75. How many of each did he b

uy?
Mathematics
1 answer:
serg [7]3 years ago
6 0
X=number of books that cost 0.60
y=number of books that cost 0.75

x+y=16
0.6x+0.75y=10.95

solve
multiply second equation by 10 for nicity
6x+7.5y=109.5

multiply first equesiotn by -6 and add to second

-6x-6y=-96
<u>6x+7.5y=109.5 +</u>
0x+1.5y=13.5

1.5y=13.5
divide both sides by 1.5
y=9

sub back
x+y=16
x+9=16
minus 6
x=7

seven 0.60 books and nine 0.75 books
You might be interested in
HELP PLEASE!
NeTakaya

Answer:5×4×9/9 +(9(4))

=180/9 + (36)

= 20+36

=56

Thank You

5 0
3 years ago
Read 2 more answers
Find the equation of the linear function represented by the table below in slope- intercept form. -4 18 1 -2 6 -22 11 -42​
34kurt

Answer:

what i don't get it doeyyyyyyy

3 0
3 years ago
Find angle abc (2x+14) (x+7)
melisa1 [442]
It's a complementary angle, so just solve for x and subtract the CBD from 90, 
First, we have to solve for x.
2x + 14 + x + 7 = 90
Combine like terms
3x + 21 = 90
Balance, subtract 21 from each side.
3x = 69
Divide 3 from each side
x = 23.
So know that we know x is 23, we can go about it 2 ways, subtracting the other angle with 90 or just substituting the variable, I'd just substitute the variable for it so just do 23 + 7. That equals 30, angle ABC = 30.


7 0
3 years ago
Read 2 more answers
Subtract using the number line. <br><img src="https://tex.z-dn.net/?f=%20-%201%20%5Cfrac%7B1%7D%7B3%7D%20%20-%20%20%5Cfrac%7B1%7
Allisa [31]

Answer:

- 1 2/6 - 1/6

- 1 3/6

-1 1/2

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Will give crown will post more
marta [7]

Answer:

2, 7, 27, 42

Step-by-step explanation:

y = 5*1 -3 =2

y = 5*2 -3 =7

y = 5*6 -3 = 27

y = 5*9 -3 = 42

4 0
3 years ago
Read 2 more answers
Other questions:
  • Maria rented a coat at $285 for 3 days. If she rents the same coat for 6 days, she has to pay a total rent of $510.
    7·1 answer
  • A local businessman bought a square plot of land. The sides of the lot measure 32 feet on each side. He decides to split the lot
    11·1 answer
  • Find the sum of 4x^3+2x^2-4x+3 and 7x^3-4x^2+7x+8
    12·2 answers
  • An aquarium is 60 cm long, 20 cm wide, and 30 cm high. What volume of water, in cubic cm, does the aquarium contain if it’s two-
    12·1 answer
  • On a scale drawing, a bicycle is 6 4/5 inches tall. The scale factor is 1/6. Find the height of the bicycle
    5·1 answer
  • A shopkeeper buys TVs for Nu 15000 and marks them up 15% to sell them. What is the mark up amount? *​
    5·1 answer
  • Please help with uncompleted ones
    7·2 answers
  • Find the sum:<br> 1. 23.456 + 3.0034
    5·2 answers
  • How much should you invest at 5% simple interest in order to earn $100 interest in 12 months?​
    9·1 answer
  • Length of an arc of a sector of angle pº<br> of a circle with radius Ris
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!