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
HACTEHA [7]
3 years ago
7

Kevin and Randi have a jar containing 63 coins , being either quarters or nickels . they total

Mathematics
1 answer:
Softa [21]3 years ago
8 0
Yess, such fun so

q=number of quarter
n=number of nickles
q+n=63

9.15=915 cents
25 cents=1 q
5 cents=1 n so

915=25q+5n
915=5(5q+n)
divide by 5
183=5q+n

we also have q+n=63
subtract q from both sides
n=63-q
subsitute 63-q for n in second equation
183=5q+63-q
add like terms
183=4q+63
subtract 63 from both sides
120=4q
divdie by 4
30=q
there were 30 quarters
subsitute
63=30+n
subtract 30
33=n


30 quarters
33 nicles

You might be interested in
Is the number rational or irrational?
Maru [420]
Well an <span>an </span>irrational number<span> is a real </span>number that cannot be expressed as a ratio of integers, i.e. as a fraction. A rational number<span> is a </span>number<span> that can be written as a ratio. So 3/7 is a rational number, 0.38(with a line saying its continuous over .38) is rational, Square of 7/9 is irrational number, and 5 pi is an irrational number.</span>
5 0
3 years ago
HELP PLEASE!!!! A window is 4 feet wide and 8 feet tall. A rectangle is shown. The length of the rectangle is labeled 4 feet. Th
Bingel [31]
First, always draw. You learned to draw in kindergarben (Yes I spelled it like that on purpose LOL) for a reason.

1) Draw your rectangle on a piece of paper or paint. 
2) Scale factor each side to enlarge which means you're going to multiply. 
--- Note if it said 'to reduce' then you would divide.
3) Then find the area by multiplying the two given sides (12 x 6 = 72).
4) Don't forget your unit of measurement - 72ft²

So your answer is D.

3 0
3 years ago
Read 2 more answers
ANSWER ASAP I WILL MAKE BRAINLYIST
aniked [119]

X+2y=4

+-x-4y=-14

——————

-2y=-10, y=5, x=4-10=-6

8 0
3 years ago
Read 2 more answers
Evaluate the expression if r = 12 and t = -6.<br> (t-r)/3
Lynna [10]

Answer:

-6

Step-by-step explanation:

\frac{(t-r)}{3}

input the numbers

\frac{(-6-12)}{3}

do the problem in the parentheses first

-6-12 = -18

now it becomes

-\frac{18}{3}

simplify and you'll get

-6

this is because -18 ÷ 3 =

-6

4 0
3 years ago
Read 2 more answers
Help meee pleasee:)))
Crazy boy [7]

7+z / 2

z = 10

 replace the value of z

7 +10 /2

 use order of operations ( division comes before addition)

7+5 = 12

3 0
3 years ago
Read 2 more answers
Other questions:
  • Please answer asap!!!
    11·1 answer
  • Devin used what he learned in clas to determine that for every 8 grams of oxygen in water, there is 1 gram of hydrogen
    5·1 answer
  • Find the zero or zeroes of the function. Please help! :((
    5·1 answer
  • The function f(x) is shown in the graph.<br><br> What is the equation for f(x)?
    7·2 answers
  • What is the coefficient of the term 5/3 xy?
    13·2 answers
  • PLEASE HELP MEEE!!!! What was the outcome of the Battle of Long Island?
    14·1 answer
  • HEEEELPPPPPPPPPPPPPP!!!!!!!!!!
    5·1 answer
  • I'LL DEFINITELY MARK YOU BRAINLIST CAN U HELP ME IN THIS ( options are in the 2nd slide )
    13·1 answer
  • A glass cube of side length 5cm has a mass of 306.25g.
    7·1 answer
  • Calculate angles in a triangle<br> HELP
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!