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
Rufina [12.5K]
4 years ago
12

Rebecca has 45 coins, all nickels and dimes. The total value of the coins is $3.60. How many

Mathematics
1 answer:
kvv77 [185]4 years ago
4 0

Answer:

Rebecca has 18 nickels and 27 dimes

Step-by-step explanation:

Let x be the number of nickels Rebecca has, then 45-x is the number of dimes she has.

The total value of Rebecca's coins is $3.60.

1 nickel - 5 cents

x nickels - 5x cents

1 dime - 10 cents

45-x dimes - 10(45-x) cents

Total x nickels and 45-x dimes is 5x+10(45-x) cents that is $3.60=360 cents. So,

5x+10(45-x)=360

5x+450-10x=360

5x-10x=360-450

-5x=-90

5x=90

x=18

45-x=45-18=27

You might be interested in
I have 2 triangle faces. i have 3 rectanglar faces. i have 6 vertices. i have 9 edges. what am i?
MissTica

Answer:

You are a rectangular prism.

Step-by-step explanation:

Rectangular prisms fill the criteria you described: two triangular faces, three rectangular faces, 6 vertices, and 9 edges. Thus, the answer is correct.

________________________________________________

Hoped that helped! If so, mark me Brainliest!

8 0
3 years ago
Rosie wants to make a cube with rectangular blocks each measuring 6cm by 3cm by 8cm. Find the least number of blocks she must us
Marysya12 [62]
Hello,

lower commun multiple(3,6,8)=24 (blocks)
================================



4 0
3 years ago
1. Popeye is lifting Olive Oyl off the ground by pulling her upward with a force of 108.1 N. She is pretty thin so she only weig
Debora [2.8K]

Answer:

1 m/s2

Step-by-step explanation:

Olive Oyl's weight = 10 × 9.81 = 98.1 N

This weight is a force acting downward because it is due to gravity.

Popeye pulls Olive Oyl up with a force of 108.1 N. Both forces act vertically but in opposite directions. Hence their resultant, R, is their difference and is in the direction of the larger force.

R = 108.1 N - 98.1 N = 10 N

This force causes an acceleration, a, on the mass, m, of Popeye.

R = ma

a = R/m = 10 N/10 kg = 1 m/s2

6 0
3 years ago
Read 2 more answers
-15=2t-11 does any one know it please
Murljashka [212]

Add 11 to both sides:

-4=-2t

divide 2 by both sides

2=t

Hope it helps! Comment if you have any questions!

5 0
3 years ago
Read 2 more answers
It took Mary 40 minutes to run 8 laps around the playground, if she spent the same time running each lap, how long would it take
Sergeeva-Olga [200]

Answer:

it should take her 45 minutes to run 9 laps

Step-by-step explanation:

40/8 = 5

9*5 = 45

8 0
3 years ago
Read 2 more answers
Other questions:
  • What is the value of the summation ∑i=14(2i+6i2)
    12·1 answer
  • Find an equation of the tangent line to the curve at the given point. y = 7x + 9 cos(x), p = (0, 9)
    10·1 answer
  • Which number should each side of the equation 2/3x= 10 be multiplied by to produce the equivalent equation of x= 15
    5·2 answers
  • Suppose the line of best fit is being found for some points that have an r-value of 0.769. If the standard deviation of the x-co
    14·1 answer
  • david has 12 baseball hats. david and his brothers have more than 19 hats combined. how many hats could david’s brothers have?
    8·1 answer
  • X−1.2=3 i dont understand this stupid math problem
    15·1 answer
  • The x-coordinate of the point that contains the ___?___ is always 0.
    5·1 answer
  • What is the value of x????
    9·1 answer
  • Find the value of y.
120°
X
y = [?]
    8·1 answer
  • Please help me, I’ll mark you ask brainliest:-) !!
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!