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
Anettt [7]
3 years ago
14

Priam has dimes and pennies in a cup holder in his car. The total value of the coins is $4.21. The number of dimes is three less

than four times the number of pennies. How many dimes and how many pennies are in the cup?
Mathematics
1 answer:
devlian [24]3 years ago
5 0

Answer: There are 41 dimes and 11 pennies in the cup.

Step-by-step explanation:

We know that 1 dime = 0.1 dollars

1 penny = 0.01 dollars

Let p be the number of pennies and d be the number of dimes.

Then we have the following equations :_

d=4p-3..................(1)\\\\0.1d+0.01p=4.21...........(2)

Substitute the value of d from (1) in equation (2), we get

0.1(4p-3)+0.01p=4.21\\\\\Rightarrow\ 0.4p-0.3+0.01p=4.21\\\\\Rightarrow\ 0.41p=4.21+0.3\\\\\Rightarrow\ 0.41p=4.51\\\\\Rightarrow\ p=\dfrac{4.51}{0.41}=11

Then , Put value of p in (1), we get

d=4(11)-3=44-3=41

Hence, there are 41 dimes and 11 pennies in the cup.

You might be interested in
PLEASE HELP ASAP!!!!!!
Marina CMI [18]
Wouldn’t it be 144° because each one is equal to the next ? I may be wrong but you never know
6 0
4 years ago
Read 2 more answers
Solve the following system of equations: -2x+y=1 <br> -4+y=1
stiks02 [169]
Perhaps you miswrote the question because in your second equation there is no x variable. However, I inferred that you meant to write -4x+y=1, and was able to solve this system of equations. You can do this either by the substitution method or the graphing method, of which I used the latter. The solution to this system of equations is (0,1). Best wishes! c:
7 0
3 years ago
Please help me i will give brainliest
katrin2010 [14]

Answer:

Medium truck is what I think is the the answer :)

8 0
3 years ago
Read 2 more answers
Which best describes the error in finding the missing length of the triangle?
Paul [167]

Answer:

24 ft

Step-by-step explanation:

a^2 + b^2 = c^2

7^2 + b^2 = 25^2

7^2 - 25^2 = -b^2

49 - 625 = -b^2

-576 = -b^2

24 = b

5 0
3 years ago
Topic: The Pythagorean Theorem and Its Converse
Crank

Answer:

Yes, this is a right triangle.

Step-by-step explanation:

The Pythagorean Theorem states that if the sum of the squares of the two small sides of a triangle add up to the square of the longest side, then the triangle is a right triangle: a² + b² = c², where a and b are the smallest sides (called legs) and c is the longest side (called the hypotenuse).

Here, the two smallest sides are 10 and 49.5, so let's square them, add them up, and see if they add up to 50.5²:

10² = 100

49.5² = 2450.25

100 + 2450.25 = 2550.25

50.5² = 2550.25

Since 10² + 49.5² equals 50.5², we know that this is a right triangle.

Thus, yes, this is a right triangle.

7 0
4 years ago
Other questions:
  • Explain how yuo know the values of the digits in the number58
    15·1 answer
  • On the first one I need to show work how I got the answer but I don't get it
    6·2 answers
  • Need help from someone due TOMORROW
    6·2 answers
  • Find the area of the following ellipse.
    7·1 answer
  • Determine which relation is a function.
    11·1 answer
  • Factor the polynomial function over the complex numbers. f(x)=x^3−3x^2+2x−6
    14·1 answer
  • The sum of twenty and a number is 14.
    11·1 answer
  • How to do special triangles
    10·1 answer
  • Which ratio is equivalent to the ratio 32:40?<br> A 16 to 20<br> B 30:16<br> C 16 to 30<br> D 20:16
    11·1 answer
  • The graph shows the scores of an exam. About what percent of students scored above 86%?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!