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
poizon [28]
2 years ago
10

Susan has a piggy bank with 28 coins in it, all dimes and quarters. She has been collecting state quarters and so far has no rep

eats. If the piggy bank has $5.50. how many more quarters does Susan need before she has a quarter from each of the 50 states?
HELP I WILL GIVE POINTS AND BRAINLIEST​
Mathematics
1 answer:
KatRina [158]2 years ago
3 0

Answer:

She needs 32 quarters.

Step-by-step explanation:

d = dime   q = quarters

d + q = 28   so    d = 28-q

0.1d + 0.25q = 5.50

0.10 * (28-q) + 0.25q = 5.50

2.80 - 0.10q + 0.25q = 5.50

0.15q = 5.50 - 2.80

0.15q = 2.70

q = 2.70 / 0.15

q = 18 quarters (she has)

50-18= 32 quarters (she needs)

You might be interested in
Name 3 planes that intersect at point O
Leokris [45]

Al chile no se wey, buscale en otro lado

4 0
2 years ago
Which one of those is it
Karolina [17]
The first option because you would need to get rid of 2/3 by dividing it on both sides, then you would subtract 57 to get x
6 0
3 years ago
NASA launched another space probe, Voyager 2 on August 20, 1977. Voyager 2 is a bit slower than Voyager 1 only traveling 15.4 km
slava [35]

Using proportions, it is found that it will take Voyager 2 82,900 years from its location to travel to the second closest star.

<h3>What is a proportion?</h3>

A proportion is a fraction of a total amount, and the measures are related using a rule of three. Due to this, relations between variables, either direct or inverse proportional, can be built to find the desired measures in the problem.

In this problem, the Voyager 2 travels 15.4 km/s. In kilometers per year, considering that one hour has 3600 seconds, the measure is given by:

15.4 x 365 x 24 x 3600 = 485,654,400 km/year.

The distance to Proxima Centauri in km is given by:

d = |1.93 x 10^10 km - 4.24 x 9.5 x 10^12 km| = 4.02607 x 10^13 km.

Hence the time in years is given by:

t = d/v =  4.02607 x 10^13/485,654,400 = 82,900.

It will take Voyager 2 82,900 years from its location to travel to the second closest star.

More can be learned about proportions at brainly.com/question/24372153

#SPJ1

6 0
2 years ago
13 times an unknown number added to 72 equals -23 times the unknown number.what is the solution to the sentence ?
Alika [10]
Let the unknown number be x
13x+72= -23x
13x+23x= -72
36x= -72
x= -2
6 0
3 years ago
Read 2 more answers
Can anyone help me with this math question
Lynna [10]

Answer:

89 seats are not being used

Step-by-step explanation:

You subtract the seats being used by teachers

342 - 75 =267

Change 2/3 into a percentage = 66.6%

Find 66.6% of 267= 177.8 (I rounded up to 178)

Then subtract 177.8/178 from 267 to find the amount of seats not being used.

The amount of seats not being used would come down to 89 seats.

I hope this helps!

4 0
3 years ago
Other questions:
  • What are some ways to describe the relationship between sets of numbers?
    6·1 answer
  • Please help me to show my work
    14·1 answer
  • The two fastest time in the past 20 years for the girls' 200-meter run at Clarkville Elementary School are 27.97 seconds and 27.
    9·1 answer
  • 2x+3x+3+4xto the second power +10+x
    8·1 answer
  • A rectangle has side measurements of 12 units and 8 units. What is the approximate measure of a diagonal that cuts through the r
    10·1 answer
  • PLEASE HELP!! 25 POINTS!!!!!!!!!!!!!
    12·1 answer
  • Find the area of the triangle given:<br> B = 3b^2<br> H = 12p^7b^19
    10·1 answer
  • Ally's science class was looking at bacteria through a microscope. Ally's teacher said some bacteria can be as small as 0.00365
    9·1 answer
  • Given that 4x-y=5 4y-z=7 and 4z-x=18 what is the value of x+y+z
    10·2 answers
  • HELP PLEASE ASAP:&lt;
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!