A bag contains 21 coins consisting of nickles and dimes. The total value of the coins is $1.70.
Write a system of equations that models this situation. How many nickels are in the bag?

Answers

Answer 1

Answer:

8

Step-by-step explanation:

x = nickles

y = dimes

0.05x + 0.10y = 1.70

x + y = 21

y = 21 - x

0.05x + 0.10 (21 - x) = 1.70

0.05x - 0.10x + 2.10 = 1.70

-0.05x + 2.10 = 1.70

-0.05x = -0.40

x = 8


Related Questions

15. Asher weighs 15 pounds less than three times the weight of Audrey, his sister. Asher
weighs 27 pounds. Write an equation that can be used to find w, the weight of Audrey. Then,
solve the equation
Equation:
Solution:

Answers

Answer:

15x-y=27

Step-by-step explanation:

I think if im wrong my apologies haven't done that in a bit

The weight of Audrey will be 14 pounds based on the given equation formation.

How to form an equation?

Determine the known quantities and designate the unknown quantity as a variable while trying to set up or construct a linear equation to fit a real-world application.

Suppose the weight of Asher is x then according to the given question,

x = 3w - 15

And, x = 27

27 = 3w - 15

3w = 42

w = 14 pounds

Hence "Weight of Audrey will be 14 pounds based on the given equation formation".

For more about the equation,

https://brainly.com/question/10413253

#SPJ5

Simplify. n6 • n5 • n4 ÷ n3 • n2 ÷ n

Answers

Answer:

Step-by-step explanation:

N⁶ · n⁵ · n⁴ ÷ n³ · n² ÷ n

n¹¹ · n⁴ ÷ n³ · n² ÷ n

n¹⁵ ÷ n³ · n² ÷ n

n⁵ · n² ÷ n

n¹⁰ ÷ n

n⁹

Answer:

1

Step-by-step explanation:

because u didnt have 1 plus its counting down on the numbers so i think its 1

pls help is it A. B. C. D.

Answers

Answer:

C

Step-by-step explanation:

Hope I was able to help!! :)

I don’t get it can you guy help me

Answers

3 to the power of 4, is 3 times 3 times 3 times 3

Answer:

81

Step-by-step explanation:

3 to the power of 4, is 3 times 3 times 3 times 3

10 lb. bag of dog food cost 5.60 what is the unit per price

Answers

Answer:

Step-by-step explanation:

.56 per pound


Circle D has a circumference of 77 cm and Circle E has a circumference of 147 cm.
What is the similarity ratio between circles D and E?

Answers

Answer:

657

Step-by-step explanation:

Step-by-step explanation:

similarities ratio of circumference = 2πr/2πR = r/R= 77/147= 11/21

plz mark my answer as brainlist plzzzz.hope this will be helpful to you.

is the relation a function (0, 3), (4, 0), (8, 0), (4, -3), (-5, 8) ​

Answers

Answer:

hlo guys Gavin magnus here

2. How many solutions to the equation 2x +2 = 2(x+3)
O 1 solution
O Infinitely many solutions
O No solution

Answers

Answer:

O No solution

Step-by-step explanation:

2x +2 = 2(x+3)

Distributer the 2 on the right side.

2x + 2 = 2x + 6

Subtract 2x from both sides.

2 = 6

2 = 6 is a false statement.

Since we did two legal steps to solve the equation, and we ended up with a false statement, that means this equation has no solution.

Answer: O No solution

The variable, k, is being divided by 11. How should you
show your work to isolate the variable?

Answers

Answer:

by multiplying the variable k by 11

Step-by-step explanation:

[tex]\frac{k}{11}[/tex] × 11, this cancels out the 11 in the denominator, which isolates the variable

Answer:

Step-by-step explanation:

Divide both sides by 11

This will probably be the last one today so yeah help

Answers

Answer:

A = 974

Step-by-step explanation:

The formula for surface area of a rectangular prism is A=2(wl+hl+hw)

so yeah enjoy freedom for the rest of the day

Answer:

974 inches2

Step-by-step explanation:

Surface Area = 2×(11×8 + 11×21 + 8×21) = 974 inches2

Select ALL expressions that are equivalent to -4(x+2)-2x+4
-6x-4
-4x + 2 - 2x + 4
-10x
-4x + -8 - 2x + 4
-4x - 2x - 8+ 4

Answers

Answer:

c and d

Step-by-step explanation:

a

Marisa has $26 in her purse. She pays $5 for lunch. Which expression represents this situation?

a.
–26 + (–5)

b.
–26 + 5

c.
26 + (–5)

d.
26 + 5

Answers

The answer is c. Marisa is paying for lunch which is taking away $5. To find out how much money she would have you would subtract 5 dollars from 26

Write the polynomial in standard form. Then classify
the polynomial by the degree and number of terms.
x^2-3x+6x^3-3x+1

Answers

Standard form:6x^3+x^2-6x+1
The degree is 3

n= 3.7. 12.8 + 6(n - 0.5)

Answers

Answer:

im assuming its 6n+9.8 given that this has no context

Step-by-step explanation:

SOMEONE PLEASE HELP AND EXPLAIN HOW TO DO THIS!!

Answers

Answer:

Your answer should be B or D.

Step-by-step explanation:

You have to find x. If the first side is 60 degrees and the other is 70 degrees, that means that the last side should be similar to that. yo can use a protractor if you have one, or you can estimate. now for the equation part. once you have the degree for the angle, you need to use the numbers to multiply to get the number. Multiply 8 by all of the numbers. Since the angle is acute, the answer has to be less than 90.

Find the slope of (2,6)-(1,3) including all steps.

Answers

Answer:

3

Step-by-step explanation:

(6-3) / (2-1) = 3/1 = 3

3x + 2y = -10
5x + y = 9

Answers

Answer:

x=4, y=-11. (4, -11).

Step-by-step explanation:

3x+2y=-10

5x+y=9

--------------

3x+2y=-10

-2(5x+y)=-2(9)

--------------------

3x+2y=-10

-10x-2y=-18

-----------------

-7x=-28

7x=28

x=28/7=4

5(4)+y=9

20+y=9

y=9-20=-11

Please help I will mark you as brainlist

Answers

I did the math I’m pretty sure it’s d

Write a number so that the equation will have an infinate number of solutions

3x+5=3x+

Answers

Answer:

3x+5=3x+5

they are both the same line

Answer:

3x+5=3x+5

It is same line

Step-by-step explanation:

Write an equation
1)y=3x
2)y=3
3)x=3
4)y=3x+3

Answers

The answer to your question is y = 3

2/3x+(-3)+(-2)-1/3x?

Answers

Answer:

1/3x-5

Step-by-step explanation:

simplify by combining like terms

2/3x - 1/3x = 1/3x

-3 + -2 = -5

Answer:

1/3x - 5

Step-by-step explanation:

2/3x + (-3) + (-2) - 1/3x

2/3x - 1/3x + (-3) + (-2)

2/3x - 1/3x - 3 - 2

1/3x - 5

can anyone answer this for me please ​

Answers

Answer:

10

+

g

9

>

12

Move the negative in front of the fraction.

10

g

9

>

12

Move all terms not containing  

g

to the right side of the inequality.

Tap for more steps...

g

9

>

2

Multiply each term in  

g

9

>

2

by  

1

Tap for more steps...

g

9

<

2

Multiply both sides of the equation by  

9

.

g

<

2

9

Multiply  

2

by  

9

.

g

<

18

The result can be shown in multiple forms.

Inequality Form:

g

<

18

Interval Notation:

(

,

18

)

Step-by-step explanation:

A $250 gaming system is discounted by 25%. It was then discounted another 10% because the box was opened by a customer. After both discounts are taken what is the total percent discount is

Answers

Answer:

168.75

Step-by-step explanation:

so first you have to do 250 times .75. this is because if you times it by .25 it would be a 75% discount. then you have to do 187.5 times .90 to get your answer

Carlita is flying a kite at the beach. She wants to know the altitude of the kite when she uses 25 yards of string at an angle of elevation of 56°. Find the altitude of Carlita's kite to the nearest hundredth.
13.98 yards


20.73 yards


30.16 yards


37.06 yards

Please Answer as soon as you can I am giving 50 points!

Answers

Answer:

Step-by-step explanation:

13.98

The altitude of Carlita's kite to the nearest hundredth should be considered as the 13.98 yards when she uses 25 yards of string at an angle of elevation of 56.

Calculation of the altitude of Carlita's kite:

Since she uses 25 yards of string at an angle of elevation of 56°

So we know that

cos 56 degrees = 0.5592

Now the altitude is

= (25) (0.5592)

= 13.98 yards

We basically multiplied these two so that the altitude should come.

hence, the first option is correct.

learn more about altitude here: https://brainly.com/question/3590651

((sinB)/1+cosB) + ((1+cosB)/sinB) = 2cscB prove that the equation is an identity

Answers

Step-by-step explanation:

If you need any explanation, we can communicate normally

Traci is t years old her brother lee is 5 years younger than she is write an expression to represent lee's age

Answers

Answer:

t - 5

Step-by-step explanation:

t is how old Traci is. To find an age that is 5 years younger than her you would have to do t - 5.

I Will give brainllest! Look at picture answers. please show all your work and explain how you get it.

Answers

Answer:

-1/10

I'm sure this answer is right.

Use the formula M= rise/run.

Then you will get this answer.

what is the answer i need help

Answers

Answer:

27

Step-by-step explanation:

 add 5+5+7+6+4

Find the 84th term of the arithmetic sequence 18, 31, 44, ...

Answers

Answer:

common difference = 31-18

common difference =13

from,

An=A1 +(n-1)d

A84=18+(84-1)13

A84=1097

Answer:

1097

Step-by-step explanation:

Common Difference:

d=a_2-a_1=(31)-(18)=13

d=a  

2

​  −a  

1

​  =(31)−(18)=13

a_n=a_1+(n-1)d

a  

n

​  =a  

1

​  +(n−1)d

\text{84th term:}

84th term:

a_{84}=18 + (84-1)(13)

a  

84

​  =18+(84−1)(13)

a_{84}=18 + (83)(13)

a  

84

=18+(83)(13)    a_{84}=1097      a  84

​ =1097

round off 3409725 to nearest 10​

Answers

Answer:

10000

Step-by-step explanation:

to know if this answer is correct you have to know the rounding rules:

If the number you are rounding is followed by 5, 6, 7, 8, or 9, round the number up. Example: 38 rounded to the nearest ten is 40.

If the number you are rounding is followed by 0, 1, 2, 3, or 4, round the number down. Example: 33 rounded to the nearest ten is 30.

Other Questions
If 16x + 4 is 10 more than 14, what is the value of 8x PLEASE PLEASE PLEASE HELP I WILL GIVE BRAINLIESTAn iPad Mini and an iPad Pro have an approximate scale factor of 1.5, where the iPad Pro is 1.5 times the size of the iPad Mini. Which statement is true?A) The perimeter of the screen of the iPad Mini is 1.5 times the size of the iPad Pro.B) The perimeter of the screen of the iPad Pro is 1.5 times the size of the iPad Mini.C) The area of the screen of the iPad Mini is 1.5 times the size of the iPad Pro.D) The area of the screen of the iPad Pro is 1.5 times the size of the iPad Mini. Who signs off on a warrant if probable cause is sufficient.? Name 5 states that the U.S added from 1816-1821 Find the measure of the missing angles. Need help ASAP pls help me the vertices of a triangle are A(2,4) B(2,1) C(3,1).reflect the triangle in the x axis then rotate it 90 degrees counterclockwise about the orgin. what are the new coordinates of the triangle? Find the value of x.B8A3D4x = [?]Enter Common law is based on civil law A. True B. False Help me with a,b,c,d of the question Translate the given phrase into an algebraic expression.Three is subtracted from g AHHH HELPAn aquarium holds 11.94 cubic feet of water, and 2.6 feet long and 1.4 feet wide. What is its depth? Round your answer to the nearest whole number. -1.8(3-1.4h) simplify the expression Scientist have inferred the structure of Earth's interior mainly by analyzingA. The Moon's Interior B. The Moon's CompositionC. Earth's Surface FeaturesD. Earth's Seismic Data please someone help fast Which word gives the best definition of advocated as it is used in paragraph 2 of Text 1: "ThisDay in History?" *suggesteddiscussedargued formentioned briefly What is the domain and range ? can someone please help me The measure of the angle formed at the center of anoxygen atom in a water molecule is about 105. The angles formed at each hydrogen atom are congruent. What is the size of the angle at each hydrogen atom? [1 and [2 are vertical angles. [2 has a measure of 31. What is the measure of [1? Which one of these is x please help Need Help ASAP What is the sum of interior angles of a triangle?DegreesGiven ABC, find the value of X.What is the measure of angle A??