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
Gnesinka [82]
3 years ago
5

Anna has a collection of 45 nickels and quarters worth $8.05. How many nickets does she have?

Mathematics
1 answer:
Andreas93 [3]3 years ago
6 0

Anna has 16 nickels

<em><u>Solution:</u></em>

Let "n" be the number of nickels

Let "q" be the number of quarters

We know that,

1 nickel = $ 0.05 or 5 cent

1 quarter = $ 0.25 or 25 cent

<em><u>Anna has a collection of 45 nickels and quarters</u></em>

Therefore,

n + q = 45

q = 45 - n --------- eqn 1

<em><u>Anna has a collection of 45 nickels and quarters worth $8.05</u></em>

$ 8.05 is worth 805 cents

Thus we frame a equation as:

number of nickels x 5 cents + number of quarters x 25 cents = 805

n \times 5 + q \times 25 = 805

5n + 25q = 805 ----- eqn 2

<em><u>Let us solve eqn 1 and eqn 2</u></em>

<em><u>Substitute eqn 1 in eqn 2</u></em>

5n + 25(45 - n) = 805

5n + 1125 - 25n = 805

20n = 1125 - 805

20n = 320

n = 16

Thus Anna has 16 nickels

You might be interested in
A) Solve the equation: 4( − 5) = 8 + 8
Alex73 [517]

Answer:

-20=16

Step-by-step explanation:

Given the following equation:

4(-5)=8+8

Due to the equation having no variable we do not have to solve for anything, but we can simplify.

4(-5)=8+8

4(-5)=4\times-5=-20

8+8=16

-20=16

Hope this helps.

5 0
2 years ago
Katrina drinks 0.5 gallons of water per day. Which expression shows how to find the number of cups of water she drinks in a week
makkiz [27]

Answer:

Step-by-step explanation:

0.5 gal/day * 7 days/week = 3.5 gal/week

3.5 gal * 16 cups/gal = 56 cups

7 1
3 years ago
Read 2 more answers
Which is a counterexample of the following conjecture: "If two angles are supplementary, they have the same measure?"
Marrrta [24]

Answer:i dont know but i think its D.

Step-by-step explanation:

Pls mark meh Brainlessed                  

My friend justen here hes tacken and hes cracked at fornight my guy AHHHH A BREAD DOG

4 0
3 years ago
The actual length of side t is 0.045 cm. Use the scale drawing to find the actual side length of w. A) 0.06 cm B) 0.075 cm C) 0.
Tems11 [23]

Answer: The answer is B 0.075 cm


Step-by-step explanation:

Since the drawings is a scale of the original you must use a proportion to solve the desired side. 0.045/.9=w/1.5;w=0.075.

5 0
3 years ago
Read 2 more answers
Shelly is trying to improve her running time for a track race she ran the first race in 43.13 seconds her time was 43.1 seconds
lesantik [10]
I we consider her running times as an arithmetic series with common difference:
43.13 - 43.1 = -.03/2 = -.015, Shelly's time in the fourth race will be 43.1 - .015 = 43.085.
7 0
3 years ago
Read 2 more answers
Other questions:
  • Ava picks a number greater than 3 tens 6 ones. The number is less than 52. It has more than 6 ones. What could the number be?
    8·2 answers
  • How to determine increase and decrease of a function without calc?
    7·1 answer
  • Which phrase describes the algebraic expression 5t-2 ?
    14·2 answers
  • 8x = 2y + 5 3x = y + 7
    12·1 answer
  • A bag contains 60 marbles, some blue and some green. The ratio of blue marbles to green
    12·2 answers
  • What power has the value of 27
    9·2 answers
  • PLEASE HELP!!!!
    13·2 answers
  • If an apple and 3 bananas cost $2.50, but 2 apples and 5 bananas cost $4.50, then how many dollars do 3 apples and 6 bananas cos
    12·1 answer
  • Dr. King was born in Atlanta, Georgia. What is the distance in miles from Washington, DCto Atlanta, Georgia?
    6·1 answer
  • Question: A Certain Typing Agency Employs Two Typists. The Average Number Of Errors Per Article Is 3 When Typed By The First Typ
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!