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
gavmur [86]
3 years ago
9

You start collecting loose coins in a jar from laundry. You are hoping that the jar has $5. The jar consist of nickles and quart

ers. There are 40 coins all together. How many nickels and quarters are in the jar?
Mathematics
2 answers:
trapecia [35]3 years ago
4 0

Answer:

q = 15

n = 25

Step-by-step explanation:

Solution

Let the nickels = n

Let the quarters = q

q + n = 40                            (1)

0.25*d + 0.05*n = 5.00       (2)    Multiply 2 by 100 to get everything into pennies. It is currently in dollars.

25q + 5n = 500                    Multiply (1) by 5

5q + 5n = 200                     Subtract

20q = 300                           Divide by 20

20q/20 = 300/20               Do the division

q = 15

q + n = 40                             Substitute 15 for q

15 + n = 40                           Subtract 15 from both sides

15 - 15 + n = 40 - 15              

n = 25

Check

15 * 0.25 + 25 * 0.05

3.75 +  1.25

5

Which is what it should equal.

pav-90 [236]3 years ago
3 0

Answer:

15 quarters and 25 nickles

Step-by-step explanation:

15quarts= $3.75

25 nickles=$1.25

total $5

You might be interested in
Consider f and c below. f(x, y, z) = (y2z + 2xz2)i + 2xyzj + (xy2 + 2x2z)k,
qaws [65]
\dfrac{\partial f}{\partial x}=y^2z+2xz^2
f(x,y,z)=xy^2z+x^2z^2+g(y,z)

\dfrac{\partial f}{\partial y}=2xyz+\dfrac{\partial g}{\partial y}=2xyz
\dfrac{\partial g}{\partial y}=0\implies g(y,z)=h(z)

\dfrac{\partial f}{\partial z}=xy^2+2x^2z+\dfrac{\mathrm dh}{\mathrm dz}=xy^2+2x^2z
\dfrac{\mathrm dh}{\mathrm dz}=0\implies h(z)=0

\implies f(x,y,z)=xy^2z+x^2z^2+C
8 0
3 years ago
What is the volume of a regular pyramid having a base area of 24 inches and height of 6 inches
Anestetic [448]

Answer:

V= 48 in^2

Step-by-step explanation:

Formula

Since the base has a known area, we do not need the full volume formula. This formula is

<em>V = B * h / 3</em>

B is the area of the base and h is the height measured from the top of the pyramid to the base meeting the base at right angles.

Givens

B = 24 in^2

h = 6 in

Solution

V = B * h / 3

V = 24 * 6/3

V= 48 in^2

6 0
1 year ago
Read 2 more answers
Determine whether the following relation is a function. {(-6, – 8), (5, 1). (9.-4), (7,2), (15, 0)} ​
lidiya [134]

This relation is a function. None of the x-values repeat. Each y-value belongs to a specific x-value.

4 0
3 years ago
What is –2c = –c − 4
crimeas [40]

Answer:

c=4

Step-by-step explanation:

–2c = –c − 4

add c to both sides

-1c=-4

divide both sides by -1

c=4

6 0
3 years ago
Read 2 more answers
Patricia needs to save $20 for a new backpack. She has $5 saved in her bank.
Ivanshal [37]

Answer:

y=1.5x+5

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
Other questions:
  • The perimeter of a quadrilateral is 38 yards. If three of the sides measure 5.8 yards, 7 yards, and 11.2 yards, what is the leng
    9·1 answer
  • Two more than the quotient of a number and 5 is 8.<br><br> use variable w for the unknown number.
    13·1 answer
  • Help plz nowwwwwwwwwwwwwwwwwwwwwwwww use both
    11·1 answer
  • A family of two adults and three children went to a water park. Admission to the water park costs $18 per person. Nora used the
    9·2 answers
  • Find the sum.<br><br> 17x3 + (3x + 8x3) = <br> (from clever)
    6·2 answers
  • −8x−5y=0 find two ordered pair solutions
    7·1 answer
  • How do you represent an unknown quantity?
    12·1 answer
  • A blue whale calf weighed 2725 kilograms at birth. A blue whale calf gains 90 kilograms of weight each day for the first 240 day
    6·1 answer
  • Can someone help me with this math homework please!
    9·1 answer
  • The sum of 9 and a number
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!