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
Flauer [41]
3 years ago
7

Katie has a collection of nickels, dimes and quarters with a total value of

Mathematics
1 answer:
garik1379 [7]3 years ago
5 0

10d+ 25q+5n= 805

D= n+8

Q= n+ 5



10d+ 25q+5n= 805

10(n+8)+25(n+5)+5n=805

10n+80+25n+125+5n=805

40n+205=805

40n=805-205

40n= 600

N=600/40

N= 15


D= n+8

D= 15+8

D= 23


Q=n+5

Q=15+5

Q=20


So 15 nickels ,23 dimes and 20quarters .


To check

15(0.05)= $0.75

23(0.10)=$2.30

20(0.25)=$5.00


Add it

5.00+2.30+0.75=8.05

7.30+.75=8.05

8.05=8.05

You might be interested in
Express the interval shown on the number line in inequality notation.
Bess [88]

Answer: x < -3 or x > 5

Step-by-step explanation: Interval notation shows the values of x. X is less than -3, or greater than 5.

6 0
3 years ago
What is the solution to 1&lt; 25-4x&lt;19?
koban [17]
Hope this helps

Hope you have a good day

4 0
3 years ago
Solve the following system of equations. Show all work and solutions.
Hitman42 [59]
  • y=2x²+6x+1
  • y=-4x²+1

Make the equations equal and solve for x

  • 2x²+6x+1=-4x²+1
  • 6x²+6x=0
  • 6x(x+1)=0
  • 6x=0 or x+1=0
  • x=0 or x=-1

For x=0

  • y=-4(0)+1=1

For x=-1

  • y=-4(1)+1=-3

The solutions are

  • (0,1) and (-1,-3)

Graph attached

4 0
2 years ago
You decide to purchase a new iPhone. The iPhone itself costs $350. The monthly fee for the services (data, messaging, etc.) is $
Bogdan [553]

The base price of the iphone is $350 and additiobal charge of a month is $67. So additional charge for p months is $67p.

Determine the equation for total cost of iphone after p momths.

P(x)=350+67p

8 0
1 year ago
2/3 of a number is 28 what is that number​
Sidana [21]

Answer:

28×3÷2=14×2×3÷2=14×3=42

8 0
3 years ago
Other questions:
  • Does anyone know how to work this question out.
    10·2 answers
  • Nico looks at the data of the yellow car. He sees the car traveled 12 laps on the 4-mile track in 15 minutes. How fast is the ca
    6·1 answer
  • There were 166 paid admissions to a game. The price was $2 for adults and $.75 for children. The amount of data taken in was $29
    9·1 answer
  • Choose the graph that matches the equation below y=3x+1
    10·2 answers
  • Plzz help ill make u brainliest
    12·2 answers
  • I NEED HELP FAST! Find the surface area of the shape below
    9·2 answers
  • The formula for the volume V of a cylinder is V=πr2h, where r is the radius of the base and h is the height of the cylinder. Sel
    12·2 answers
  • This is homework and can someone do this because I have more homework to do.
    11·1 answer
  • Adele prepared 54 kilograms of dough after working 6 hours. How much dough did Adele prepare if she worked for 9 hours? Assume t
    9·1 answer
  • At a restaurant, you order an appetizer for $5.25, a meal for $12.75, and a drink for $2.99. If the sales tax is 9%, what is the
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!