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
AlekseyPX
3 years ago
12

Marcy bought a total of 20 years books and CDs during a yard sale for a total of $54.50 cents. If books cost $1.50 each and CDs

cost five dollars each how many of each did she buy
Mathematics
1 answer:
Olenka [21]3 years ago
6 0

Answer:

x + y = 20

1.5x + 5y = 54.50

Solve the equations and get: x = 13 ∧ y = 7

Marcy bought 13 books and 7 CDs.

You might be interested in
What is the relationship? Plzzz help it’s for right now
4vir4ik [10]

Answer:

B

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
Please help me
Stolb23 [73]

Step-by-step explanation:

option c 120

earning (in$) for 8 dog houses = 40

earning (in$) for 1 dog house= 40/8 = 5

earning (in$) for 24 dog houses= 24×5 = 120

8 0
2 years ago
Simplify the expression -4x^2(3x − 7).
satela [25.4K]

Answer:

Step-by-step explanation:

Simplify the expression -4x^2(3x − 7).

A. -12x^3 + 28

<h2>B. -12x^3 + 28x^2<= your answer</h2>

C. -12x^3 − 28

D. -12x^3 − 28x^2

5 0
2 years ago
Read 2 more answers
Explain how the commutative property of addition,the Associative property of addition and mental math can help you find 75.2+(57
4vir4ik [10]

Answer: The sum of 75.2+(57.376+24.8) is 157.376.

Explanation:

The commutative property of addition states that,

a+b=b+a

The associative property of addition states that,

a+(b+c)=(a+b)+a

The given expression is 75.2+(57.376+24.8).

First use commutative property of addition in the parenthesis.

75.2+(57.376+24.8)=75.2+(24.8+57.376)

Now use associative property of addition.

75.2+(24.8+57.376)=(75.2+24.8)+57.376

Now simplify the expression,

(75.2+24.8)+57.376=100+57.376

(75.2+24.8)+57.376=157.376

Therefore, the sum of 75.2+(57.376+24.8) is 157.376.

7 0
2 years ago
Read 2 more answers
Please help with this, Thank You.
Dmitry [639]

Answer:

x = 12

Step-by-step explanation:

3x + 9 = 5x - 15

2x = 24

x = 12

4 0
2 years ago
Other questions:
  • -10.0-(-3.4)<br><br> also you have to simplify your answer
    6·2 answers
  • Change from base 10 to the give base
    14·1 answer
  • Weighing about a ton on their 14th birthday, the average T-Rex grew 4.6 pounds per day from the age 14 to 18 years! Write a form
    6·1 answer
  • Persons having Raynaud's syndrome are apt to suffer a sudden impairment of blood circulation in fingers and toes. In an experime
    12·1 answer
  • Rosa brought d drawings to an art show. After selling 17 of them, she had 22
    14·2 answers
  • Is 31.669 an integer?
    15·2 answers
  • A car travels 30 miles in 1/2 hour. What is the average speed at which the car is traveling in miles
    15·1 answer
  • Which expression is equivalent to 5(x + 9)? 5x + 9<br><br> 5x + 45<br><br> x + 45<br><br> x + 9
    7·1 answer
  • T/F: The shapes are similar.
    9·2 answers
  • If a bike travels 15m in 2 sec, what is its speed in km/h?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!