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
il63 [147K]
2 years ago
6

Mary has 15 points with the total value of $1.75 if the coins are nickels and quarters how many of each kind are there

Mathematics
1 answer:
torisob [31]2 years ago
8 0

Answer:

The number of nickel coins is 10 and the number of quarter coins is 5

Step-by-step explanation:

<u><em>The correct question is</em></u>

Mary has 15 coins with the total value of $1.75 if the coins are nickels and quarters how many of each kind are there

Let

x ----> the number of nickel coins

y ----> the number of quarter coins

Remember that

1\ nickel=\$0.05

1\ quarter=\$0.25

we know that

Mary has 15 coins

so

x+y=15 -----> equation A

The total value of the coins is $1.75

so

0.05x+0.25y=1.75 ----> equation B

Solve the system by graphing

Remember that the solution is the intersection point both graphs

using a graphing tool

The solution is the point (10,5)

therefore

The number of nickel coins is 10 and the number of quarter coins is 5

You might be interested in
Write 7x = 2401 as a logarithmic function.
Mademuasel [1]

logx2401 = 7

log72401 = x

log24017 = x

logx7 = 2401

5 0
3 years ago
Please help I will mark you brainalist ​
liq [111]

Answer:

EASY. y = 4/7x+3

Step-by-step explanation:

7 0
3 years ago
List the key parts of this graph and explain what each means in a real world context
Reptile [31]

Which graph? I can not see any graph in there

3 0
2 years ago
6+8d=7d solve for d.
Margarita [4]

Question -

6 + 8d = 7d

Solution-

6. = 7d - 8d

6. = -d

d. = -6

<h3>Verification </h3>

6 + 8(-6) = 7(-6)

6 - 48. = -42

-42. = -42

LHS= RHS

Hence value of d is -6

hope it helps

4 0
3 years ago
Read 2 more answers
Kari has a box with brand new pencils that are all the same size. She has 1 yellow pencil, 5 blue pencils, and 5 red pencils. Sh
babymother [125]

Answer:

(5/11)(1/10)

Step-by-step explanation:

probability of picking blue = 5/11

Now there are only 10 pencils

probability of picking yellow = 1/10

probability of picking blue, then yellow = (5/11)(1/10) = 1/22

4 0
2 years ago
Other questions:
  • Find the values of the variables for the parallelogram.<br> x=<br> y=<br> z=
    9·1 answer
  • One of two complementary angles is 8 degrees less than the other.
    5·2 answers
  • Help please!!!
    9·1 answer
  • 1. Suppose an arithmetic sequence has common difference 5,and the current
    14·1 answer
  • Year Population (in millions)
    5·2 answers
  • If ray ran 1 mile in 6 minutes on Monday, 2 miles in 12 minutes on Tuesday, and 3 miles in 18 minutes on Wednesday, how many mil
    9·2 answers
  • What is x in the problem <br> x(2x-5)=12
    6·1 answer
  • Farhana purchases a computer for $850. The store charges her 8% sales tax on the purchase. How much will the store charge for th
    11·1 answer
  • A hamster is running on a wheel. The diameter of the wheel is 6 inches. The hamster makes the wheel turn 10 times. How far did t
    11·1 answer
  • PLEASE HELP ILL GIVE BRAINLIEST!!!! I AM STUMPED AS I HAVE NOT PAYED ANY ATTENTION IN CLASS PLEASE HELP ME!!!!
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!