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
Ksenya-84 [330]
3 years ago
7

You have a piggy bank a total of 72 coins in dime and quarters . If the piggy bank contains 10.80 how many dime are in the piggy

bank
Mathematics
1 answer:
Anna35 [415]3 years ago
5 0

\text{Make a system of equations:}\\\\72=d+q\\\\10.80=0.10d+0.25q\\\\\text{Solve for d:}\\\\-0.25(72=d+q)\\\\10.80=0.10d+0.25q\\\\-18=-0.25d-0.25q\\\\10.80=0.10d+0.25q\\\\-7.20=-0.15d\\\\\text{Divide by -0.15}\\\\48=d\\\\\boxed{\text{48 dimes}}

You might be interested in
HELP!!!!!! An Instagram photo is measured ″ 4″ by ″ 4″. A poster enlargement is being printed with a scale factor of 8.5. What i
Anika [276]

The given measurement of the Instagram photo is "4" by "4". And a poster enlargement is being printed with a scale factor of 8.5 .

So on using the scale factor of 8.5 , lengths of new sides are "8.5 *4" by "8.5 *4"

= " 34" by "34" .

So the new lengths of the enlarged pictures are of dimension "34" by "34" .

7 0
3 years ago
Read 2 more answers
Anyone know how to simplify a whole number into a mixed number or a improper fraction???
AlekseyPX

Answer:

Example any whole number over one would be an improper fraction, so 2=2/1, something like 5/3=1 2/3 would be a mixed number, subtract the numerator by the denominator, how ever many times you can subtract is the whole number and the amount remaining is the numerator, keep the same denominator,,, hope that makes sense

Step-by-step explanation:

3 0
2 years ago
Kim is 5 years older than her brother Jack. If the sum of their ages is 21, find each of their ages.
yarga [219]

9514 1404 393

Answer:

  • Kim is 13
  • Jack is 8

Step-by-step explanation:

Let k represent Kim's age. Then Jack's age is k-5 and the total of their ages is ...

  k + (k -5) = 21

  2k = 26 . . . . . . . add 5, collect terms

  k = 13 . . . . . . . . . divide by 2; Kim's age

  k -5 = 8 . . . . . . . Jack's age

Kim is 13; Jack is 8.

7 0
2 years ago
Jim borrows $790 for 4 months. He pays a simple interest rate of 6%. How much interest must he pay? Round your answer to the nea
nydimaria [60]

Answer:

Jim will be paid $150 or 30% to his account.

Step-by-step explanation:

Have a great day :)

3 0
3 years ago
What is an equation for the linear function whose graph contains the points (−1, −2) and (3, 10)
sladkih [1.3K]
The equation of a line starting from two points is:
y-y_1=\frac{y_2-y_1}{x_2-x_1} \cdot (x-x_1)

From the first point you get: x1 = -1, y1 = -2
From the second point you get: x2 = 3, y2 = 10

Replace x1, y1, x2, y2 in the equation of the line and you get:
y+2=\frac{10+2}{3+1} \cdot (x+1)
y+2=\frac{12}{4} \cdot (x+1)
y+2=3 \cdot (x+1)

From this you get the equation of your line:
y(x)=3x+1




4 0
3 years ago
Read 2 more answers
Other questions:
  • Determine the slope of the graph of x^4=ln(xy) at the point (1,e)
    7·2 answers
  • For what values of k will the pair of equations kx + 3y = k-3 , 12x + ky = k have no solution
    13·1 answer
  • What is a fraction name for 4
    6·2 answers
  • Halley drank 2 1/3 glasses of milk on monday. tyrone drank 1 1/3 times as much milk as halley. how many glasses of milk did tyro
    10·1 answer
  • Find the area of this circle. Use 3.14 for pi.
    12·1 answer
  • Explain how you know the values of the digits in the number 58
    15·1 answer
  • Whats the midpoint between (2,-7) and (10,1)<br>​
    13·1 answer
  • MATH SMARTIES I WILL GIVE BRAINLIEST!!!!
    9·2 answers
  • Diana is walking at 5 miles per hour and Gustavo is walking at 6 miles per hour and started 1 mile behind Diana. Will Gustavo ev
    7·2 answers
  • Simplify the following expression log(x^2)-log(x)
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!