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
Sladkaya [172]
3 years ago
5

Derrick has a total of 9 nickels and quarters in his pocket. The total amount of money he has in coins is $1.45. How many nickel

s and how many quarters does Derrick have? A. 3 nickels and 6 quarters B. 6 nickels and 3 quarters C. 4 nickels and 5 quarters D. 5 nickels and 4 quarters
Mathematics
2 answers:
Alexeev081 [22]3 years ago
7 0

Answer:

<u>Option C. 4 nickels and 5 quarters</u>

Step-by-step explanation:

let the number of nickels = x, and the number of quarters = y

Derrick has a total of 9 nickels and quarters in his pocket

So, x + y = 9

∴ y = 9 - x ⇒(1)

1 nickel = 5 cent = $0.05

1 quarter = 25 cent = $0.25

The total amount of money he has in coins is $1.45

So, 0.05 x + 0.25 y = 1.45

Multiply the both sides by 100

∴ 5x + 25y = 145 ⇒(2)

Substitute with y from (1) at (2)

∴ 5x + 25(9-x) = 145

Solve for x

5x + 225 - 25x = 145

-20x = 145 - 225 = -80

x = -80/-20 = 4

Substitute with x at (1)

y = 9 - 4 = 5

So, The number of nickels = 4 , and the number of quarters = 5

<u>The answer is option C. 4 nickels and 5 quarters</u>

zepelin [54]3 years ago
4 0

Answer: 4 nickels and 5 quarters

Step-by-step explanation:

You might be interested in
Can you please help me??
Agata [3.3K]

Answer:

y value is-8

x value is-8✓2

5 0
3 years ago
What is the remainder when 849,400 is divided by 216​
S_A_V [24]
The anserws is 88 so your welcome
5 0
2 years ago
Read 2 more answers
During their lastest visit to the eye doctor, Ebony and Chelsea got their eyes checked.
frutty [35]
1. Ebony's right eye....opposite of -1.50 = 1.50
2. the rational numbers are : -1.50, 1.50, -1.00, and 0.25....these are all rational because they can be turned into fractions.
3. least to greatest : -1.50, -1.00, 0.25, 1.50
4. not sure how to answer this...negatives are always less then positives....however, with negatives,unlike positives, the larger the number, the smaller it is.
7 0
3 years ago
How many roots does a linear equation have?
Evgesh-ka [11]

Answer:

1

Step-by-step explanation:

A linear equation (degree 1) will have one root. A quadratic equation (degree 2) will have two roots. A cubic equation (degree 3) will have three roots. An nth degree polynomial equation will have n roots.

3 0
3 years ago
Read 2 more answers
a card is chosen at random from a deck of 52 cards. it is replaced and a second card is chosen. what is the probability of choos
serious [3.7K]
P(2 aces) = (1/13)^2 
P(2 kings) = (1/13)^2 

P(king and ace) = 8C2/52C2 - 2(1/13)^2 = 0.0152 
7 0
3 years ago
Read 2 more answers
Other questions:
  • When writing a two column proof you should always start with ________ Information.
    10·2 answers
  • A 50 meter path surrounds a rectangular garden . The width of the garden is two-thirds its length. find its area.
    12·1 answer
  • 7. Krista wrote a list of factors and a list
    11·1 answer
  • What is the value of x? PLZ LMK ASAP!
    9·1 answer
  • Match each shape on the left with its area formula on the right.
    11·1 answer
  • The perimeter of a square is 28ft. can you conclude that area of the square is 49 square feet? Explain.
    9·1 answer
  • What is the value of the expression when a = 4 and b = 3?
    15·2 answers
  • Can someone just check my answers please? Please let me know which questions are wrong. Thank you for your time.
    5·2 answers
  • PLEASE ANSWER ASAP !!!!!
    15·2 answers
  • Combine Like Terms: 2y + 7z - 2z + 4y +8 + y +2
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!