Kevin and Randy Muise have a jar containing 72 ​coins, all of which are either quarters or nickels. The total value of the coins in the jar is ​$12.80. How many of each type of coin do they​ have?

Answers

Answer 1
This is a system of equations problem. To start, set up the equation for the total amount of coins. You know there are 72, and only 2 types of coins. We can assign x as the variable for quarters and y as the variable for nickels. Knowing this, our first equation is
x+y=72
The next equation sets up the amount of money the coins add up to. The total is 12.80. The equation will model the amount of money contributed by quarters + the amount of money contributed by nickels
.25x + .05y = 12.80
Next just solve for one variable using the first equation and substitute it in
X=72-y, so .25(72-y)+.05y=12.80
18-.25y+.05y=12.80
5.2=.2y
Y=26
Then we put that back into our first equation and get x=46
46 quarters and 26 nickels. This can be checked by plugging into the second equation. .25(46)+.05(26)=12.80

Related Questions

Dennis has to take a short multiple choice quiz that 4 questions and each question has 4 answer choices. What is the probability he gets all 4 questions incorrect?

Answers

Answer:

3/4?

Step-by-step explanation:

Can someone please help me?

Answers

Answer:

-26.5

Step-by-step explanation:

(53/|2/2|)/3(1)-5

=(53/1)/3-5

=(53)/-2

=-26.5

David uses 1/4 cup of apple juice for every 1/2 cup of carrot juice to make a fruit drink . Enter the number of cups of apple juice David uses for 1 cup of carrot juice. HELP ME PLSSS!!!!

Answers

Answer:

1/2 cup

Step-by-step explanation:

1 cup is equal to 2 1/2 so that means you use 2 times 1/4 which is 2/4 cups which is equal to 1/2

Answer:

1/2 cup of apple juice

Step-by-step explanation:

Hi,

1/4 cup of apple juice = 1/2 cup of carrot juice

We're trying to find the number of cups of apple juice when the carrot juice is equal to a whole cup. To do this, we have to get 1/2 to a whole number. Simply multiply 1/2 by 2 to get a whole number. Here's what I mean...

1/4 cup of apple juice = 1/2 cup of carrot juice

1/2 x 2 = 1 (whole number)

So, when we have a whole cup of carrot juice we have...

1/4 x 2 (since we multiplied the 1/2 by 2, we have to do the same to the other side).

1/4 x 2 = 1/2

David will use 1/2 cup of apple juice when he makes a cup of carrot juice.

Hope this helps :)

What is the slope of the line that
passes through these two points?
(-4, 6)
(-4,-2)
Remember. Slope is
a) 0
rise (y2-yı)
run (x2-x1)
c) undefined
b) 1/3
d) -3

Answers

Answer:

undefined

Step-by-step explanation:

( -4, 6) & (-4, -2)

To find the slope of the line, we use the slope formula: (y₂ - y₁) / (x₂ - x₁)

Plug in these values:

(-2 - 6) / (-4 -  (-4))

Simplify the parentheses.

= (-8) / (-4 + 4)

= (-8) / (0)

Simplify the fraction.

-8/0

= undefined

This slope is undefined because you cannot divide a number by 0. These points also fall on a vertical line, which has an undefined slope.

Hope this helps!


Find the accumulated Value of 5,000
investment which is invested for 8 years at an
interest
rate of 12% compounded

Answers

I used a calculator app for compound interest rate and got 12,379.82

Cindy goes to dinner with a friend. The total bill is $16.50. Cindy brorught $20.00 with her. What is the maximum ammount of tip Cindy can leave the server?
A. 15%
B. 10%
C. 25%
D 20%
need answer ASAP​

Answers

The correct answer is A. 15%! :)

Jenny has a 12-sided die.
If Jenny rolls the die 180 times, how many times can Jenny predict she will roll a 12?
30 times
24 times
15 times
12 times

Answers

Answer:

how many times can Jenny predict she will roll a 12?

12 times

Step-by-step explanation:

180\12

The number of times 12 can come on the die is 15. The correct option is (C).

What is probability?

Probability is the branch of Mathematics that deals with the measurement of the chance of occurrence of a random event.

The probability of any event always lies in the close interval of 0 and 1 [0,1].

The zero value of probability indicates that the event will not happen while its value equal to one indicate that it will happen.

Given that,

Jenny rolls the 12 sided die 180 times.

Since a 12 sided die has number on each of its face ranging from 1 to 12.

The probability of getting 12 is given as,

P(getting 12) = Favorable number of outcome/Total possible outcomes

                    = 1/12

Now, the number of times 12 comes can be found as,

180 ×  1/12

= 15.

Hence, Jenny can predict that she will get 12 on the die for 15 times.

To know more about probability click on,

https://brainly.com/question/11234923

#SPJ2

Question 1
A sweater was originally $38.00, but the department
store is running a 15% off sale. What is the sale price of
the sweater?

Answers

Answer:

$32

Step-by-step explanation:

can y’all help me i don’t get it

Answers

Answer:

empty spaces in order from left to right are 16,12,42

Step-by-step explanation:

because your adding one to the 5 so you add one to the 15 then your × by 12 bc 3×12 is 36 and × by 12 on the top so 6×12 then last one ur adding 6 because 12+6 is 18 and what ever you do to the top or bottom you do the the bottom or top

It’s a. 8* and pls pls help meee

Answers

Answer:

x = 1.5

Step-by-step explanation:

Since they are corresponding angles, they equal to themselves

8x + 13 = 12x + 7

Subtract 12x from both side

-4x + 13 = 7

Subtract 13 from both side

-4x = -6

Divide by -4

x = 1.5

Answer:

20x=20

Step-by-step explanation:

8x+13+12x+7

(8x+12x)+(13+7)

20x+20

11. It took Mr. Owen 12 hours to build
a 36-foot long brick wall around the
perimeter of his garden. At what rate
did Mr. Owen build the wall? Show
your work.
Answer quick plzzz no website

Answers

Answer:

3 feet per hours

Step-by-step explanation:

To get unit rate divide foot by hours

[tex]\frac{36}{12} = 3[/tex]

Answer:

36/12 =3 so ans = 3 hours

Step-by-step explanation:

ehheuehejeheehehejevffvrvrv

find the surface area of this solid​

Answers

Answer:

152 ft^2.

Step-by-step explanation:

The surface area is made up of 3 rectangles and 2  triangles

= 5 * 8 + 5 * 8 + 6 * 8 + 2 * 1/2 * 4 * 6

=  40 + 40 + 48 + 2*12

= 152.

ANSER CHOIES
A.135
B.150
C.165
D.180

Answers

Answer:

D.

Step-by-step explanation:

What is the image point of (2, -5) after a rotation of 90 degrees counterclockwise about the origin?

Answers

Answer:

(5,-2)

Step-by-step explanation:

(x, y)=(y, -x)

(2,-5)=(5,-2)

90° clockwise=(5,-2)

Mark the brainiest if correct

Which is a man-made resource?

Answers

Answer:

a house?

Step-by-step explanation:

Parallel lines m and n are cut by a transversal t. Which two angles are corresponding angles? A. 1 and 5 B. 1 and 6 C. 1 and 2 D. 1 and 7

Answers

Answer:

1 and 5

Step-by-step explanation:

So basically corresponding angles are the angles which lie on the same line of the transversal

And also one of them will be an interior angle and the other a exterior angle

Answer:

D

Step-by-step explanation:

Describe the function between x = - 4 and x = -1.
linear and decreasing
2
1
non-linear and decreasing
-4 -3 -2 -1
0
1
х
-1
non-linear and increasing
-2
linear and increasing
11
A

Answers

The function between the -4 and -1 is increasing and linear. Then the correct option is D.

What is a function?

The function is an expression, rule, or law that defines the relationship between one variable to another variable. Functions are ubiquitous in mathematics and are essential for formulating physical relationships.

Describe the function between x = - 4 and x = -1.

As the value of x increases the value of the function also increases.

Then the function is an increasing function between -4 to -1.

Between -4 to -1 the function is a linear function.

More about the function link is given below.

https://brainly.com/question/5245372

Josie is saving money to purchase a new pair of shoes. She has already saved $5 and will earn $0.50 for each chore she completes. Graph the relationship between number of chores Josie completes and the total amount she will have saved.

Answers

Answer:

The graph would be y=0.5x+5

Step-by-step explanation:

0.5 is the slope since it can change anythime and 5 stays the same so therefore it is the y-intercept. :)

what is the square root of 7686.3652736?

Answers

Answer: 87.6719183867

Step-by-step explanation:

Exact Form: √ 7686.3652736

Decimal Form: 87.67191838 …

Step-by-step explanation: The radical cannot be simplified, but it can be approximated.

Give me brainliest or a thank you pls :)

While shopping, Randel had 3 times as much money Tonia.
He spent $38 and has $10 left.
How much money does Tonya have?

Answers

Answer:

Step-by-step explanation:

First create an equation that addresses the question and work backwards.

Randel starts with $10.

He spent $38, so he originally had $48. (10+38)

He had 3 times as much money than Tonia. (48/3)

48/3=16, so Tonia has $16.

Solve x plssssss :)))))

Answers

Answer:

x = 43

Step-by-step explanation:

180 - 65 = 115

115 = x + 72

-72        -72

43 = x

x = 43

Help me this is due I dont know this answer can someone help me please.

Answers

Answer:

i think its 43?

Step-by-step explanation:

Your answer should be 125 squared inches.

The formula for area of a rectangle in length x breadth/width.

Hope this helped

Which of the
following points
would be a solution
to this system of
linear inequalities?


help me out please

Answers

The pic is attached.

Answer:

(-2, -4)

Step-by-step explanation:

The solution to a system of equations is an ordered pair. In order to be a solution to a system of inequalities, it has to be in the shaded area of both lines. Since both lines are shaded below the lines, the point has to be in that middle area where both the green and purple shades overlap. (-2, -4) is the only point in that picture that is in that overlapping shaded area. (-4, -1) is only in the green shaded area.

What is the answer for this problem?

Answers

Answer:

answer c for question 9 answer

The volume of a triangular prism is 264 cubic feet. The area of a base of the prism is 48 square feet. What is the height of the prism?

Answers

Answer:

5.5 cm

Step-by-step explanation:

The volume of a prism is the area of a base multiplied by the height of the prism.

V = base area x height

264 = 48 x h

h = 264÷48= 5.5 cm

Answer:

The height of the prism is 5.5 ft

Step-by-step explanation:

The formula for the volume of a triangular prism of base area b and height h is

V = (1/3)(b)(h).

Here we are told that V = 264 ft³.  Thus,

V = 264 ft³ = (48 ft²)(h).

Solving for h, we get:

       264 ft³

h = ------------- = 5.5 ft

       48 ft²

The height of the prism is 5.5 ft

Find the measure of the missing angle.
Select one:

35°

40°

45°

50°

Answers

Answer:

40°

Step-by-step explanation:

All angles must equal 180.

110°+30°+_40°_= 180°

Answer:

40 degrees because this degree should be 180 in total and 40+110+40 equals 180

This is algebra 10 please help :(

Answers

i believe the answer is 3

Gary's credit score is below 640, so he ________.
A
will never be allowed to buy a car

B
will have a hard time borrowing money and will be charged a high interest rate

C
will be charged very low interest rates

D
cannot access his credit report without paying a fee

Answers

B you baka kid I hope this helped you

Saephan walked 400 feet per minute.
What was his speed in feet per hour?

Answers

24,000 feet per hour I believe

Carmen left her house and drove 11 mi north, 16 mi east, 14 mi south, 9 mi west, and 3 mi north. How far was she from home? Carmen was miles from home.​

Answers

Babbabsbsbsbsbbsbsnshahahbs

Answer:

7 mi.

Step-by-step explanation:

Other Questions
Branliest to correct answer explain how you got your answer please Match each characteristic to Sojourner Truth, Harriet Tubman, or both. A 1.8-kg object is attached to a spring and placed on frictionless, horizontal surface. A force of 40 N stretches a spring 20 cm from its equilibrium position (the origin of the x axis). The object is now released from rest from this stretched position, and it subsequently undergoes simple harmonic oscillations. a) Find the force constant of the spring. b) Find the total energy of the oscillating system. c) Where will the object be from the equilibrium position when its velocity is -2.0 m/s (negative 2 m/s) PLZ HELP QUICK NO LINKS What act passed by U.S. Congress allowed war material to be given to England on credit? Which of the following is NOT one of Darwin's 4 points of natural selection?A) There is variation within a population.B) There are traits that occur due to mutations.C) There are more offspring produced than can survive.D) The ones that survive have the favorable trait(s). Please help me with this Kai pen for Ruths dog is 7 feet long and 6/1.3 feet wide. Her friend Ralphs dog pen is 14 feet long and 6/1.2 feet wide. How many times larger is the area of Ralphs dog pen? find the measure of the missing angle :D the main idea of the book omar ibn said pleaseeeeeeeeeeeeeee help GIVING BRAINLIEST!!!!!HOW DO BONES WORK? a ball is thrown horizontally from the top of s vertical tower and strikes the ground at point 50m from the bottom of the tower. Given that the height of the tower is 45m, determine thea)time taken for the ball to hit the groundb)the initial horizontal velocity of the ballc)The vertical height of the ball just before striking the ground(take acceleration due to gravity as 10m/s) Solve 5(7)5x = 60. Round your answer to the nearest thousandth.X Need help pls. It is for acellus PLEASE HELP I WILL GIVE BRAINIEST. What is the range? Why did the United States take part in the Korean War?A, To establish a colony on the Korean PeninsulaB, to defend South Korea against communist aggression C, to aid its Chinese allies against an aggressive neighbor D, to prevent North Korea from acquiring nuclear weapons 30 cm cubic of water was mixed with 30 cm cubic of ethanol. the final. volume of the misturr was found to be less than 60cm cubic .Give the reason why List 3 different organelles found inside of a cells Dr. Phillips is a cognitive-developmental psychologist who studies how children learn mathematical principles. His current interest is in studying how children learn multiplication. He recruits 54 second graders who have not yet learned how to multiply numbers to participate in his study. He wonders if different teaching styles lead to different levels of mastery of the subject. Condition 1 involves having students watch a video of cartoon characters explaining multiplication. Condition 2 involves having students being taught multiplication by a teacher. Condition 3 involves students being taught multiplication by a fourth grader. In all conditions, participants are given instruction for the same amount of time, and then are given the same 15-question multiplication test. The number of questions answered correctly is recorded. How many levels does the IV have?_________ Is the IV measured or manipulated? _________Use the exact words from the description above to answer: how is the DV operationalized? ______________