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
daser333 [38]
1 year ago
12

Jennifer has 25 coins with a total value of $4.25. The coins are quarters and nickels. How many of each does she have?

Mathematics
1 answer:
kirill115 [55]1 year ago
8 0

Answer:

15 quarters, 10 nickels

Step-by-step explanation:

q+n=25

0.25q+0.05n=4.25

multiply the first equation by -0.25 and add the second equation to it

-0.25q-0.25n=-6.25\\0.25q+0.05n=4.25
________________
                -0.2n=-2

n=\frac{-2}{-0.2} =10   has 10 nickels

q=25-n=25-10=15  has 15 quarters

10(.05) +15(0.25) = 0.5 + 3.75 = 4.25

Hope this helps

You might be interested in
Find the value of X?
daser333 [38]
Because we know the midpoint is in the middle, we know that both sides are equal.
So set both = to each other
4x - 1 = 3x + 3

add 1 to both sides

4x=3x+4

then subtract 3x from both sides and because there is always a 1 in front of x the answer would be

x=4
3 0
3 years ago
Read 2 more answers
Find the area of a circle circumscribing an equilateral triangle of side 15cm.<br> Take pi = 3.14.
miskamm [114]

Answer:

236 cm²

Step-by-step explanation:

Height of an equilateral triangle (h) = √3 /2 (l)

l = side of the equilateral triangle.

h = √3 /2 (15)

In an equilateral triangle the orthocenter, centroid, circumcenter and incenter are in the same spot

The center of the circle is the centroid and height match  with the median. The radius of the circumcircle is equal to two thirds the height.

Formula for the Radius of the circumcircle = 2/3 h

= 2/3 x √3 /2 (15)

= 5 √3 cm     (=radius)

Area of the circle = πr^

= 3.14 x( 5 √3 ) ^

=3.14 x(25*3)

=3.14 x 75

=235.5

=236 cm²

8 0
3 years ago
What is -5g + ( -17fg ) =
Anika [276]

Hello from MrBillDoesMath!

Answer:

-g (5 + 17f)    



Discussion:

The terms only have the factor "g" in common so


-5g + ( -17fg) =                       => factor "g" from each term

g ( -5 - 17f) =

-g (5 + 17f)    

is as much as it can be factored.


Thank you,

MrB

7 0
4 years ago
Solve the system 2x + 2y equals -6 and 3x - 2y equals 11 What is the solution to the system
ivann1987 [24]

Answer:


Step-by-step explanation:

(1,-4) is the answer reason why is you add the equations in order to solve for the first variable plug it in the equations in order to solve for the remaining variables

3 0
3 years ago
How to find the value of each power
Inessa [10]
Exponent of a number says how many times.

2³

The 2 is the base number, while the little 3 is the exponent.

2³ = 2 x 2 x 2 = 8

Basically, you would just have to do two, three times.

Very time when you get the hang of it !!
4 0
4 years ago
Other questions:
  • If you were going to apply statistical methods to analyze teacher evaluations, which question form, A or B, would be better? For
    10·1 answer
  • Find all the roots of the equation x4 - 2x3 + 14x2 - 18x + 45 = 0 given that 1 + 2i is one of its roots.
    13·1 answer
  • The high school leadership team is having a car wash. They charge $5.50 for large cars and $4.00 for small cars . They had a suc
    7·1 answer
  • Need ANSWER ASAPpppp
    7·2 answers
  • Can someone help me with questions 1-4
    8·2 answers
  • If y=2 2/3 when x=1/4, find y when x=1 1/8
    6·1 answer
  • On a coordinate plane, the center of a circle P is at the point (2, 15) . Point M is located on the circle at (7, 3). Which equa
    7·1 answer
  • Help pls ill give brainliest
    12·1 answer
  • HELPPP
    14·1 answer
  • Which is the equation of a hyperbola with directrices at x = ±3 and foci at (4, 0) and (−4, 0)?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!