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
If
algol [13]

Answer:

0

Step-by-step explanation:

We have the two functions:

f(x)=\sqrt{x}+12\text{ and } g(x)=2\sqrt{x}

And we want to find (f-g)(144).

This is the same thing to f(144)-g(144).

So, let’s determine the value of f(144) and g(144) first:

\begin{aligned} f(144)&=\sqrt{144}+12 \\ &=12+12 \\ &=24\end{aligned}

And:

\begin{aligned} g(144)&=2\sqrt{144} \\ &=2(12) \\ &=24 \end{aligned}

Hence:

\begin{aligned} (f-g)(144) &= f(144)-g(144) \\ &=24-24 \\ &=0 \end{aligned}

Our final answer is 0.

6 0
3 years ago
Read 2 more answers
An object is moving at the constant rate of 32 feet per second. How many yards will it travel in one minute? 10.7 yards per minu
In-s [12.5K]

1 yard = 3 feet

1 minute = 60 seconds

Multiply 32 feet per second by 60 to find feet per minute:

32 x 60 = 1920 feet per minute.

Divide total feet per minute by 3 feet to find yards per minute:

1920 / 3 =640 yards per minute.


6 0
3 years ago
Drag each tile to the correct location on the table. Each tile can be used more than once, but not all tiles will be used.
DerKrebs [107]

Answer:

The answer to your question is below

Step-by-step explanation:

1)  Given

2)  Subtraction property of equality (because we are subtracting the same quantity on both sides).

3) Simplification

4) Subtraction property of equality ( because we are subtracting the same quantity on both sides).

5) Simplification

6) Multiplication property of equality (because we are multiplying the same quantity on both sides).

7) Simplification

7 0
3 years ago
Read 2 more answers
find the coordinates of the vertex of the following parabola algebraically. write your answer as an (x, y) point. y = -3x^2 + 48
77julia77 [94]

Answer:(8,-3)

Step-by-step explanation:

8 0
3 years ago
PLEASE HELP ! Which logarithmic graph can be used to approximate the value of y in the equation 4^y = 8?
Schach [20]
4^y=x
log(4^y)=logx
y*log4=logx
y=logx/log4
so, this is a log function, so it is not B,
vertical asymptote for this function is 0, so it did not move right or left (the graph will be look like log x), correct answer is C
5 0
3 years ago
Other questions:
  • tyler asks for a fish tank for his birthday. the tank he wants is a rectangular prism 20.25 inches long, 10.5 wide, and 12.5 inc
    5·1 answer
  • Use repeated subtraction to divide 95/10
    11·1 answer
  • What is the GCF of 15 and 30
    13·2 answers
  • John can send up to 250messages each month. So far he has sent 141 messages this month let t represent the number of messages he
    7·2 answers
  • *<br> Can 5.6+ 1/2 be combined as like terms?<br> Yes<br> No
    11·2 answers
  • Help plz<br> .....................
    13·2 answers
  • 300 cubic inches to cubic centimeters?
    15·2 answers
  • Is 2.4 bigger than 2 1/3 ?
    6·2 answers
  • Rewrite the following equation in standard form.<br> y = 7x + 2
    6·1 answer
  • What is the least multiple 6 and 8 have in commen explain
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!