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
eduard
3 years ago
12

Joey has a full 40 coins consisting of only quarters and nickels if the total value is $5.00 how many of each does joey have.

Mathematics
2 answers:
Archy [21]3 years ago
7 0
Q + n = 40....q = 40 - n
0.25q + 0.05n = 5

0.25(40 - n) + 0.05n = 5
10 - 0.25n + 0.05n = 5
-0.25n + 0.05n = 5 - 10
 - 0.20n = -5
n = -5 / -0.20
n = 25 <=== 25 nickels

q + n = 40
q + 25 = 40
q = 40 - 25
q = 15 <== 15 quarters
Mekhanik [1.2K]3 years ago
7 0
N=number of nickles
q=number of quarters

40 coins total so
n+q=40

total value is 500 cents
5n+25q=500
divide both sides by 5
n+5q=100


so we gots
n+q=40
n+5q=100

elimination
multily first equation by -1 and add to 2nd equation

-n-q=-40
<u>n+5q=100 +
</u>0n+4q=60

4q=60
divide both sides by 4
q=15

sub back
n+q=40
n+15=40
minus 15 both sides
n=25


25 nickles and 15 quarters
<u />
You might be interested in
Find the slope of the line that passes through the pair of points.<br> (1,-4), (-5, -3)
Westkost [7]

Answer:

A

Step-by-step explanation:

m=(y2-y1)/(x2-x1)

Therefore:

(-3-(-4))/(-5-1)

-1/6 (A)

5 0
3 years ago
Read 2 more answers
PLEASE HELP ME PLEASE!!!!!!!!
tester [92]

Answer:

length measure of Pillow  = 1.4 m

Step-by-step explanation:

Volume of Wedge = (area of base triangle) * length

Volume of Wedge = (1/2) * base * height  * Length

base = 1 m

height = 0.5 m

Length = L m

Volume = 0.35 m³

=> (1/2) * 1 * 0.5 * L  = 0.35

=> (0.5/2)L = 0.35

=> (0.5/2)L * 2 = 0.35 * 2

=> 0.5L * 2 = 0.7

=> 0.5L / 0.5 = 0.7 / 0.5

=> L = 1.4

Learn more about Volume here: https://brainly.in/question/13396657

5 0
2 years ago
8 times the difference between a number and 6 is equal to 4 times the number.
7nadin3 [17]

Answer:

The variable titled "the number" is A: 12.

Step-by-step explanation:

The problem is 8 * (x - 6) = 4 * x

Try the first number as x and rewrite the expression.

8 * (12 - 6) = 4 * 12

Following PEMDAS (the Order of Operations), you need to solve the problem inside the parenthesis.

12 - 6 = 6

Rewrite the problem.

8 * 6 = 4 * 12

8 times 6 is 48.

4 times 12 is 48.

The variable in the expression 8 * (x - 6) = 4 * x is 12.

4 0
3 years ago
The graph of the function f(x) is shown below. On a coordinate plane, a curved line with a minimum value of (0.6, 2.5) and a max
statuscvo [17]

Answer:-1.8 do good on the rest of your test`

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
If someone understands this please help
katrin [286]

Answer:

A= 4

B= 4

C= -1

D= 4

E= -1

F= 4

G= -1

Step-by-step explanation:

The expected value equation is the probability of something happening multiplied by the amount of times it happens. In this case you have four equal sized sections, so you have a one in four chance to land in any of these sections. A, B, D, and F represent the four for this one in four chance. C, E, and G represent the amount of points you get when you land on those sections, in this case -1

3 0
3 years ago
Other questions:
  • In the figure, j || k and m(2=116? What is the m(3?
    7·1 answer
  • A food packet is dropped from a helicopter and is modeled by the function f(x) = -16x2 + 14400. The graph below shows the height
    8·2 answers
  • What is 1 3/5 as a improper fraction
    8·1 answer
  • -6 w + 1 = -11 Solve
    11·2 answers
  • PLEASE HELP... WILL GIVE BRAINLIEST
    14·2 answers
  • please help and describe and correct the error in finding a solution of the equation in two variables! i will mark you brainlies
    12·2 answers
  • Got a question on my math quiz asking the questions below. The question marked me as wrong, but didn’t tell me what I got wrong/
    8·1 answer
  • In the following problem, the ratios are directly proportional. Find the missing variable.
    10·1 answer
  • Find the probability of prime or cube between 1 to 39
    13·2 answers
  • I need urgent help and maybe please explain how to do it? I will appreciate it
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!