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
oee [108]
3 years ago
12

Suppose you have 20 coins that total $3.00. Some coins are nickels and some are quarters. Which of the following pairs of equati

ons would you use to find out how many of each coin you have?
A. n + q = 30
5n + 25q = 20
B. n + q = 30
n + q = 3.00
C. n + q = 3.0020
0.05n + 0.25q = 3.00
D. n + q = 20
5n + 25q = 300
Mathematics
1 answer:
shusha [124]3 years ago
6 0

Answer: D. n + q = 20

5n + 25q = 300

Step-by-step explanation:

Let n represent the number of nickels that you have.

Let q represent the number of quarters that you have.

Suppose you have 20 coins. It means that

n + q = 20

The total value of the coins is $3. The value of a quarter is $0.25 and the value if a nickel is $0.05. Therefore, the equation would be

0.05n + 0.25q = 3

Multiplying both sides of the equation by 100, it becomes

5n + 25q = 300

The correct option is

D. n + q = 20

5n + 25q = 300

You might be interested in
The width of a rectangle is 2 units less than the length. The area of the rectangle is 63 units. What is the length, in units, o
Oduvanchick [21]

Answer: Length = 9 units

Step-by-step explanation:

Let L represent the length of the rectangle.

The width of a rectangle is 2 units less than the length. It means that the width of the rectangle is (L - 2) units.

The formula for determining the area of a rectangle is expressed as

Area = length × width

The area of the rectangle is 63 units. It means that

L(L - 2) = 63

L² - 2L = 63

L² - 2L - 63 = 0

L² + 7L - 9L - 63 = 0

L(L + 7) - 9(L + 7) = 0

L - 9 = 0 or L + 7 = 0

L = 9 or L = - 7

Since the length cannot be negative, then

L = 9 units

Width = 9 - 2 = 7 units

5 0
3 years ago
Events A and B are mutually exclusive, with P(A) = 0.36 and P(B) = 0.05.
quester [9]
 I think it is A 0.018
4 0
3 years ago
Justin wants to buy a new pair of Jean's. If the jeans were originally $50.00, but are on sale with a 30% discount, how much wil
Paraphin [41]

Answer:oyoyoyohkyhiibjgi

Step-by-step explanation:

ykhitrjhithihtrnht

8 0
3 years ago
Original price $35;Markup:42%
Sliva [168]
It would be d if the markup was that high
8 0
3 years ago
What word describes the slopes of the line
grin007 [14]

Answer:

Positive

Step-by-step explanation:

There are a couple ways we can go about this.

First, we can see that as x increases, so does y, so that means its positive

For perspective, if x is the amount of time and y is the number of sales, we can see that the sales are going up and not going down or staying at the same place

If you wanna check your work on that, you can plot two points and find the slope using y1-y1/x1-x2 and the slope will be positive.

We can also use the process of elimination, we know it can't be zero because it's not a straight, horizontal line and we know its not undefined because it isn't a straight vertical line, so it's between negative and positive, and since the line is going up, that means that it's positive.

4 0
3 years ago
Other questions:
  • If d = 20 and C = 20π
    12·1 answer
  • Help me please<br><br> If you help me I would appreciate it a lot
    10·1 answer
  • How can you use the Commutative (order) Property of Multiplication to find the product of 8x7?
    7·1 answer
  • Identify all values, if any, in the data set that would be considered outliers when creating a modified boxplot. 71 74 78 79 79
    14·2 answers
  • Please Answer!! IM GOING TO FAIL! Plz You get 5pts! Please, Please, Please Im begging you
    12·1 answer
  • To make 1 liter of lemonade, 4 cups of water, 1 cup of lemon juice and 3 tablespoons of sugar are used.
    10·1 answer
  • What is the value of x?<br><br><br><br> Enter your answer in the box.
    11·2 answers
  • How to solve a table graph using this coordinates (0x,-7y) (4x,9y) (5x,13y) (-10x,-47y<br> )
    13·1 answer
  • To prepare for a party, Mark buys a small bunch of balloons for $4.00 and
    5·1 answer
  • if maria earned $60 in interest over a 4 year period at a 4% simple annual interest how much did she originally deposit in savin
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!