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
pav-90 [236]
3 years ago
11

Jimmy is selling used books at a yard sale. A customer buys 9 books at a cost of $0.75 each and pays with a $20.00 bill. Jimmy m

ust determine c, the amount of change in dollars he should give the customer. Which equation represents c?
A. 20 - 0.75c = 9
B. 20 - 0.75 = 9c
C. 0.75(9) + c = 20
D. 0.75c + 9 = 20
Mathematics
1 answer:
KatRina [158]3 years ago
7 0
C
Because .75 times 9 would give you the price of the books and then you would have to add C, the amount left to get to 20.
You might be interested in
A little brown bat has eaten 1400 mosquitoes. It can eat 900 mosquitoes per hour. Let x be the number of hours it needs to hunt
Vladimir79 [104]
1400/900 = x You can divide the 1400 total number of mosquitoes by 900, the number of mosquitoes it can eat per hour and you will find the value of x.
7 0
3 years ago
Richard is frustrated. He knows the line to the right should have a 3 and a 4 in the equation but he can't remember if it is y =
Alisiya [41]

Answer:

The correct equation is "y=4x+3"

Step-by-step explanation:

Given equation:

y= 4x+3 \ \ or \ \ y=3x+4

As per the given line formula:

\to y=mx+c

The slope(m) of the line is \frac{4}{1} = 4  and y-intercept at 3, that is the point (c). So, the correct equation of the line:   y = 4x + 3

7 0
3 years ago
An observer (O) spots a plane flying at a 42° angle to his horizontal line of sight. If the plane is flying at an altitude of 15
NeTakaya

Answer:

D. 22,417 feet

Step-by-step explanation:

Fine the diagram in the attachment for proper elucidation. Using the SOH, CAH, TOA trigonometry identity to solve for the distance (x) from the plane (P) to the observer (O), the longest side x is the hypotenuse and the side facing the angle of elevation is the opposite.

Hypotenuse = x and Opposite = 15,000feet

According to SOH;

sin 42^0 = \frac{Opposite}{Hypotenuse} \\\\Sin42^0 = \frac{15000}{x}\\ \\x = \frac{15000}{sin42^0}\\\\ \\

x = \frac{15000}{ 0.6691} \\\\x = 22,417 feet

Hence the distance (x) from the plane P to the observer O is approximately 22,417 feet

3 0
4 years ago
If (3x2 + 22x + 7) ÷(x + 7) = 3x + 1, then (x + 7)( ) = . The check of the polynomial division problem shows that the product of
azamat

Answer:

(x + 7) * (3x + 1) = (3x^2 + 22x + 7)

Step-by-step explanation:

Given

(3x^2 + 22x + 7) \div (x + 7) = 3x + 1

(x + 7) * (\ ) = [\ ]

Required

Complete the blanks

We have:

(3x^2 + 22x + 7) \div (x + 7) = 3x + 1

Rewrite as:

\frac{(3x^2 + 22x + 7) }{ (x + 7)} = 3x + 1

Cross multiply

(x + 7) * (3x + 1) = (3x^2 + 22x + 7)

8 0
3 years ago
Read 2 more answers
Someone KEEPS answering my questions and THERE ANSWERS ARE RIGHT. AHH HOW? srlt2 you smart. Anyways does anyone wanna help me
vekshin1

Answer:

lol, hello again!

SA = 456 cm²

Step-by-step explanation:

small rectangle SA: 6*4 + 6*8 + 6*4 + 6*8 + 4*8 = 176

large rectangle SA: 2*14 + 2*8 + 2*14 + 2*8 + 8*14 + (8*14 - 8*4) = 280

Total SA = 176 + 280 = 456

7 0
3 years ago
Other questions:
  • Please someone help me to prove this. ​
    13·1 answer
  • Find expressions for each of the following. Please make sure to show your work!
    7·1 answer
  • Kendra is putting up a new fence around a rectangle or playground that measure 25 feet by 37 feet. If fencing costs 75.00 per fo
    13·1 answer
  • A certain television costs $599.00 at Best Buy. On Black Friday, it is on sale for 35% off. What is the price of the computer on
    13·2 answers
  • A circle is represented by the equation below:
    6·1 answer
  • HELP PLEASE I DONT UNDERSTAND AND NEED TO PASS
    7·1 answer
  • -6x - 2y = 8<br> Y = 5x + 4<br> a. (1,-1)<br> b. (0,4)<br> c. (-1, 1)<br> d. (-1,-1)
    7·1 answer
  • Amanda's computer weighs 56 ounces. How many pounds does it weigh? Amanda's computer weighs______pounds. What is the answer ?
    10·1 answer
  • A piece of ribbon is cut into three pieces that
    11·1 answer
  • PLEASE HELP RELATIONSHIPS IN TRIANGLES
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!