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
Nataly [62]
3 years ago
8

A collection of nickels, dimes, and quarters consist of 19 coins with a total of $ 2.30 . If the number of dimes is equal to the

number of nickels, find the number of each type of co
Mathematics
1 answer:
PilotLPTM [1.2K]3 years ago
6 0

Answer:

n = 7, d = 7, q = 5

Step-by-step explanation:

1 nickel = $0.05

1 dime = $0.10

1 quarter = $0.25

Let

Nickel = n

Dime = d

Quarter = q

n + d + q = 19 (1)

0.05n + 0.10d + 0.25q = 2.30 (2)

n = d

Substitute into (1)

n + n + q = 19

2n + q = 19

q = 19 - 2n

0.05n + 0.10n + 0.25q = 2.30

0.15n + 0.25q = 2.30

Substitute q = 19 - 2n

0.15n + 0.25(19 - 2n) = 2.30

0.15n + 4.75 - 0.5n = 2.30

0.15n - 0.5n = 2.30 - 4.75

-0.35n = -2.45

n = -2.45/-0.35

n = 7

Since n = d

then, d = 7

n + d + q = 19

7 + 7 + q = 19

14 + q = 19

q = 19 - 14

= 5

q = 5

You might be interested in
Order from greatest to least 2.007; 2.714; 2.09; 2.97
Naya [18.7K]
2.97, 2.714, 2.09, 2.007
5 0
3 years ago
The planning committee voted to increase the customer service budget by 10% from last year. If the budget last year was 56,000,
stellarik [79]
Your answer will be 560,000 because you convert 10% to a decimal which is .10 and times .10 by 56,000 and you get your answer 560,000
6 0
4 years ago
Read 2 more answers
Can someone help please ASAP
solong [7]

Answer:

dab= 43 degrees

Step-by-step explanation:

this is because of a property in geometry (I dont remember the name) that says when your lines are parallel to each other with that line through the center like that, the degrees cross

8 0
3 years ago
Someone please help. Will mark brainliest!
marusya05 [52]

Step 2, replace the perpendicular bisector with angle bisector.

Note that in Step 3, it says "bisectors" with an s. This means that there are more than one angle bisector. Step 1 only states 1 bisector, so above answer should be correct.

hope this helps

5 0
3 years ago
Read 2 more answers
How do I use Perfect Squares to estimate the Square Root of a number? NEED THIS ANSWER ASAP!!
uranmaximum [27]

Answer:

hope it helps

Step-by-step explanation:

Finding square roots of numbers that aren't perfect squares without a calculator

1. Estimate - first, get as close as you can by finding two perfect square roots your number is between.

2. Divide - divide your number by one of those square roots.

3. Average - take the average of the result of step 2 and the root.

4. Use the result of step 3 to repeat steps 2 and 3 until you have a number that is accurate enough for you.

8 0
3 years ago
Read 2 more answers
Other questions:
  • WILL MARK BRILLIANT!!
    8·2 answers
  • How to solve -222=5x-3(-7y-4)
    15·2 answers
  • Find the surface area of the square pyramid shown below.<br> units^2 <br> 2<br> squared
    5·1 answer
  • What is the measure of &lt;7?
    9·1 answer
  • I need some help!! I wil try to give brainliest!!!
    11·1 answer
  • Please help me pleaseeee
    11·2 answers
  • A plane traveled 240 miles. The trip was with the wind. It took 3 hours. The trip back was into the wind. The trip back took 6 h
    15·1 answer
  • Simplify a² x a² x a³ and write the answer in the index form​
    15·2 answers
  • Jackson runs a farm stand that sells bananas and grapes. Each pound of bananas sells for $1 and each pound of grapes sells for $
    10·1 answer
  • You want to stain the lateral faces of the wooden chest shown. Find the area that you want to stain in square inches.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!