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
alexgriva [62]
3 years ago
11

In Juan's coin bank there are nickels (n),

Mathematics
1 answer:
allsm [11]3 years ago
7 0

Answer:

Juan has 32 dimes, 16 nickels and 8 quarters in his coin bank.

Step-by-step explanation:

Since in Juan's coin bank there are nickels (n), dimes (d), and quarters (q), and the number of quarters is one-quarter the number of dimes, and the number of nickels is twice the number of quarters, While the total value of the coins is $ 6.00, to find the number of each type of coin the following calculations must be performed:

Q = 1/4 D

N = 2Q = 1/2 D

D = D

20D + 10N + 5Q = X

20 x 0.10 + 10 x 0.05 + 5 x 0.25 = X

2 + 0.50 + 1.25 = X

3.75 = X

24D + 12N + 6Q = X

24 x 0.10 + 12 x 0.05 + 6 x 0.25 = X

2.40 + 0.60 + 1.50 = X

4.50 = X

32D + 16N + 8Q = X

32 x 0.10 + 16 x 0.05 + 8 x 0.25 = X

3.20 + 0.80 + 2 = X

6 = X

So, Juan has 32 dimes, 16 nickels and 8 quarters in his coin bank.

You might be interested in
The price of dress fabric is proportional to the length of fabric purchased. The graph shows this relationship.
professor190 [17]
C. 8$/m. The rate is the same as the slope. To find the slope, we find "rise over run," or the change in the height/change in length (OR, change y/ change x) 
The change in y is 24-8=16
The change in x is 3-1=2

16/2= 8$/1 m.   This is the unit rate because it describes the change in y over ONE UNIT of x. 
4 0
3 years ago
Read 2 more answers
NGO has a collection of dimes and quarters with a total of $3.50. The number of dimes is 7 more than the number of quarters. How
Tpy6a [65]

Answer: $24.50

Step-by-step explanation: $3.50 times 7 equals $24.50

8 0
3 years ago
If angle ABD is 90 degrees. Select all of the angles that measure 42 degrees.
m_a_m_a [10]

Answer:

Measure of angle 2 and angle 4 is 42°.

Step-by-step explanation:

From the figure attached,

m∠ABC = 42°

m(∠ABD) = 90°

m(∠ABD) = m(∠ABC) + m(∠DBC)

90° = 43° + m(∠DBC)

m(∠DBC) = 90 - 43 = 47°

Since ∠ABC ≅ ∠4 [Vertical angles]

m∠ABC = m∠4 = 42°

Since, m∠3 + m∠4 = 90° [Complimentary angles]

m∠3 + 42° = 90°

m∠3 = 90° - 42°

        = 48°

Since, ∠5 ≅ ∠3 [Vertical angles]

m∠5 = m∠3 = 48°

m∠3 + m∠2 = 90° [given that m∠2 + m∠3 = 90°]

m∠2 + 48° = 90°

m∠2 = 90 - 48 = 42°

m∠3+ m∠4 = 90° [Since, ∠3 and ∠4 are the complimentary angles]

48° + m∠4 = 90°

m∠4 = 90 - 48 = 42°

Therefore, ∠2 and ∠4 measure 42°.

5 0
4 years ago
Is the eye color of people on commercial aircraft flightseye color of people on commercial aircraft flights a discrete random​ v
const2013 [10]

Answer: The eye color of people on commercial aircraft flights is a discrete random​ variable.

Step-by-step explanation:

A discrete random variable is a variable with real values that are countable.

A discrete random variable has a probability that is between 0 and 1 for each possible values and the sum of all these probabilities equals 1.

7 0
3 years ago
The diameter of a circle is 9 cm. Find its area to the nearest tenth.
Alja [10]
<h2>63.6 cm</h2><h2 />

Cut diameter in half to find radius

9/2 = 4.5

radius = 4.5

This is the formula for area of a circle:

pi * radius^2

pi * 4.5^2

20.25pi

Now find pi:

20.25 * pi = 63.6

Answer:

63.6 cm is the area

3 0
3 years ago
Read 2 more answers
Other questions:
  • The solution of<br> 20-12-<br> d -12 -15 is d 28<br> TRUE<br> FALSE
    9·1 answer
  • Geometry help 10 points
    5·2 answers
  • Twice a number is equal to 35 more than 7 times the number. Find the number.
    8·2 answers
  • Which expressions are equivalent to 2*+7-3652-5)? Check all that apply.
    11·1 answer
  • What is the approximate area of the circle shown below?
    12·1 answer
  • If your good at math please do this
    10·1 answer
  • What is the coefficients in the following expression
    10·2 answers
  • How can you represent 100 as an exponential expression with 10 as the base
    14·1 answer
  • Please help!! markup and markdown word problems.
    15·1 answer
  • Find X please I really need help. Explain the best you can! Thanks!
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!