Set up and solve a system of equations to solve the problem.

A jar contains n nickels and d dimes. There are 26 coins in the jar, and the total value of the coins is $1.90. How many nickels and how many dimes are in the jar?

Answers

Answer 1

Answer:

14 Dimes and 12 Nickels

Step-by-step explanation:

So you want to make 2 equations like this:

n+d=26

0.05n+0.10d=2

Now, use substitution and get d=26-n

plug that into the next equation and get

0.05n+0.10(26-n)=2

Distribute and combine like terms

0.05n+2.6-0.10n=2

2.6-0.05n=2

subtract 2.6 from both sides and you get

-0.05n=-0.6

Solve for n by dividing and you get

12 nickels.

Now, plug that into the first equation and you get

12+d=26

d=14


Related Questions

What is the equation of this line?

y= 2x - 3

y= -1/2x- 3

y= -2x - 3

y= 1/2x - 3​

Answers

Answer:

First option) y= 2x - 3

Step-by-step explanation:

[] The y-intercept, our b, is -3. This does not rule out any of the options as they all have -3.

[] The slope, when we have a graph with clear points, can be found with rise-over-run. We will pick a point and then count up and over to the next point.

-> Starting at the y-intercept, (0, 3), we count up 2 and to the right 1 for a slope of 2/1. This simplifies to 2.

[] Our equation is y = 2x - 3

Have a nice day!

     I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly.

- Heather

5. Which of the following is not shown in the
figure at the right?
A. a line intersects parallel lines
B. there are intersecting lines
C. there are perpendicular lines
D. two lines are parallel
//

Answers

C.
(I’m pretty sure but if I’m wrong I apologize in advance)

HELP PLSSSSSSSSSSSSSSSSSSSSSSSSSS

Answers

Answer:

Can't see answer it's blank

Step-by-step explanation:

Write 9,030,800 in expanded form.

Answers

Answer:

9 million 30 thousand 800 hundred

Step-by-step explanation:

i think this is what u mean by expanded form

pls mark brainliest i need 1 more

PLS DO 8.10 PLSS ITS DO TMR

Answers

8.  11/12 gallons of paint
10. 23/24 gallons of drink mix

Step-by-step explanation:

Note: When denominators are different, you must find a common denominator between the two fractions by multiplying both values
Ex: 1/3 and 1/4 = 4/12 and 3/12 common denominator is 12

8. Find the common denominator, 3/4 and 1/6, multiple the first denominator, 4, with three to get 12. Now multiply the numerator by the same number. 9/12 is our new fraction. Since the new denominator is 12, we have to get the other denominator to be 12 as well. Multiply 6 from 1/6 by 2 to get 12. Now do the same with the numerator. 2/12 is our new fraction, and all that's left is to add them together to find how much paint Damon has in total, which is 11/12 gallons.

10. Same concept as the above, 1/12 and 7/8 have a common denominator of 24, multiply 1 and 12 by two to get 2 and 24. Multiply 7 and 8 by 3 to get 21 and 24. 2/24 and 21/24 are our new fractions to add together. 23/24 is our answer.

Enjoy

DECORATING Taji is hanging a picture 5\8 of the distance from the floor to the ceiling. if the distance between the floor and the ceiling is 12 feet, how high should he hang the picture

Answers

Answer:

7.5 is the final answer

Step-by-step explanation:

QUESTION 3
Screenshots

Answers

Answer:

2. P= 12

Step-by-step explanation:

Remember that if you have an exponent in your variable , what you have to do is to cancel it out by putting a square root in both sides :

√p ^2 = √144      the exponent will cancel out and then just square root 144          

p = 12                   that's your answer  :)

What is the quadratic equation whose roots are 2 and 6, and whose leading coefficient is 5

Answers

Answer:

5x^2-8x + 12

Step-by-step explanation:

the formula for finding roots of equation is

x^2- (sum of roots)x + products of roots =0

and we already have the roots of the equation

so we add them to give 8

and multiply to give 12

hence the quadratic equation that has those roots with leading coefficient is 5x^2-8x + 12=0

6.
Write the equation of a line through points (5, 5) and (1, 0) in point-slope form.

Answers

Answer: [tex]y=\frac{5}{4} x-\frac{5}{4}[/tex]

-6= -15r+9s. Solve for s

Answers

Answer:

(5r-2)/3 = s

Step-by-step explanation:

-6= -15r+9s

Add 15r to each side

-6+15r= -15r+15r+9s

15r-6 = 9s

Divide each side by 9

(15r-6)/9 = 9s/9

(5r-2)/3 = s

111111111111111111111111111111111111111111111

Answers

Answer:

  40 in

Step-by-step explanation:

The Pythagorean theorem tells you the relationship between the sides of a right triangle.

  b^2 +75^2 = 85^2

  b^2 = 85^2 -75^2 = 1600

  b = √1600 = 40

The length of the missing side is 40 inches.

answer: b= 40in
explanation is in the picture
hope this helps! (:

1. The sum of two numbers is 20.5. Their
difference is 6.5. Find the two numbers.

Answers

Answer:

13.5 and 7

Step-by-step explanation:

x + y = 20.5

× - y = 6.5

Hence,

x =20.5 - y

20.5 - 2y = 6.5

Hence,

2y = 14

and x = 20.5 - 20.5 - 7 = 13.5

Hope that helps :))

Answer:

The two numbers are 7 and 13.5

Step-by-step explanation:

Let the two numbers be x and y

Make 3 equations (for system of equation and substitution method)

Equation 1. x - y = 6.5

Equation 2. x = 6.5 + y

Equation 3. x + y = 20.5

Use the value of x in equation 2 to substitute x in equation 3.

6.5 + y + y = 20.5

Combine like terms

6.5 + 2y = 20.5

- 6.5 on both sides

2y = 14

Divide both sides by 2 to isolate y

y = 7

Substitute y in equation 3 to find x

x + 7 = 20.5

x = 13.5

Hope this helps :)

Have a great day!

Question 10 please help and show step by step working out ​

Answers

Answer:

P and Q must have some relation f their integers but it doesn't give a value

Step-by-step explanation:

Answer:

The answer is

[tex]8 + \sqrt{48} [/tex]

someone please help with this question :)!

Answers

I think a) would be the answer. I proceeded by elimination: the domaine of the function goes from 3 and continues to infinity, so that leaves with a) and b) as possible answers. Both have the same range and both of their functions reflect over the x axis, so we have to compare the two answer by looking at the position of the function in the graph. The function is in the first quadrant (top right corner), so the position of the function has to be at our right, which leads us to a).

May someone please help me with these equations I am struggling thank you very much

Answers

Answer: see attachment

Step-by-step explanation:

FILL IN THE BLANK TO MAKE THE NUMBER SENTENCE TRUE.

6 X 2/
= 6

Answers

6 x 2/2 = 6, because 2/2 is 1 and 6x1 is 6

help help help help help help help

Answers

1- 1 1/2

2- 5.3

3-  t=5

t=15

t=6

make L the subject of formula
[tex]v = \frac{1}{2} lbh[/tex]

Answers

Answer:

T^2=4π^2*L/G

L=(T^2*G)/4π^2

Step-by-step explanation:

hope this helps

Answer:

[tex]v = \frac{1}{2} lbh \\ \\ \\ l = v \div ( \frac{1}{2} bh) \\ \\ l = v \times \frac{2}{bh} \\ \\ l = \frac{2v}{bh} [/tex]

write a numerical expression to represent the phrase the sum of 25 and the cube of 9; evalute

Answers

Step-by-step explanation:

25 + 9³ = 25 + 81 = 106

remember, the cube of a number means to multiply it with itself 3 times (for a squared number that would be 2 times).

9³ = 9×9×9

An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division

The value of the expression 25 + 9³ is 754.

What is an expression?

An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.

Example: 2 + 3x + 4y = 7 is an expression.

We have,

The sum of 25 and the cube of 9.

This can be written as,

25 + 9³

= 25 + 729

= 754

Thus,

The value of the expression 25 + 9³ is 754.

Learn more about expressions here:

https://brainly.com/question/3118662

#SPJ2

Any help would really be helpful :D

Answers

Answer:

here,

4×35=n×10

140=10n

140/10=n

n=14

Hope this helps you!

Answer:

See below.

Step-by-step explanation:

4     n

_ =  _

10   35

You cross multiply. You get 140=10n.

140=10n

_        _

10      10

n=14

You have your answer. ✌️

A bag contains 4 red marbles, 3 blue marbles and 6 green marbles. If two marbles are
drawn out of the bag, what is the probability, to the nearest 1000th, that both
marbles drawn will be red?

Answers

Answer:

~0.143

Step-by-step explanation:

So, in total there are 15 marbles, and only 6 of them are red. So the first draw will have a  chance of being red. Since you didn't mention placing it back, the next draw will have a  chance of being red. It's  , because you just took a red one out of the bag (leaving 5 left) and the total was lessened by one. To get the answer, you'd multiply both numbers together.

6/15 x 5/14 = 1/7 or (roughly) 0.143

AAAA!!!HELP QUICK!!!

Answers

Answer:

x= 58°

Step-by-step explanation:

if 32° and x is a 90° angle,

32+x = 90

x = 90 - 32

x = 58°

help find area pls :(

Answers

Answer:

Total area = 26.13 ft²

Step-by-step explanation:

area of a triangle = 1/2 x base x height

From inspection, the base of the triangle = 3 x 2 = 6

and the height of the triangle = 4

⇒ area = 1/2 x 6 x 4 = 12 ft²

area of a semicircle = [tex]\frac{1}{2}\pi r^2[/tex]

⇒ area = [tex]\frac{1}{2} \times 3.14 \times 3^2[/tex]

⇒ area = 14.13 ft²

Total area = 12 + 14.13 = 26.13 ft²

which expression is equivalent to 12^-5 times 12^9?
a. 1/12^-45
b. 12^-45
c. 1/12^4
d. 1/12^-4

Answers

Answer:

D.  1/12^-4

Step-by-step explanation:

[tex]12^{-5}*12^{9}[/tex]

Since both exponents have the same base, we can add the exponents to get:

[tex]12^{-5+9}=12^{4}[/tex]

We can cross out A and B since they multiplied the two exponents, therefore both answers are wrong.

Now, let's try C and D.

C is wrong because it has a different base being raised to the same power.

D is correct. When you have a negative exponent, it is equivalent to the reciprocal of the base to the positive exponent.

The reciprocal of 1/12 is 12, and the positive of -4 is 4, therefore the answer is D.

Answer:

12^14

Step-by-step explanation:

It's the correct answer

The function m is given in three equivalent forms. Which form most quickly reveals the zeros (or "roots") of the function? Choose 1 answer: (Choice A) m ( x ) = − 2 ( x − 6 ) 2 + 18 (Choice B) m ( x ) = − 2x^2 + 24x - 54 (Choice C) m ( x ) = − 2 ( x − 3 ) ( x − 9 ), Write one of the zeros

Answers

Answer:

Choice C

Step-by-step explanation:

Choice C already has X factored into a form which can readily be set equal to zero.

Eg. X - 3 = 0 and X - 9 = 0

To find the zeroes, simply solve for X

Answer:

this is the real correct answer

Step-by-step explanation:

The first triangle is dilated to form the second triangle. What id the scale factor?
A. 50
B. 5
C. 2
D. 0.5

Answers

Answer:

0.5

Step-by-step explanation:

10/5=0.5, or one half.

Write the function represented by the table in f (x) = a • b ^x form.

Answers

Answer:

[tex]f(x)=32(1.3)^x[/tex]

Step-by-step explanation:

Here, the growth factor is 1.3 since 32(1.3)=41.6, 41.6(1.3)=54.08, and so on.

Therefore, the function that represents the table is [tex]f(x)=32(1.3)^x[/tex]

If you don’t know the answer please don’t comment.

1.) Given f(x) = x3 + 1 and g(x) = −x + 1 what is the value of (fg)(−4)?

A.) 315

B.) -315

C.) 225

D.) -225

2.) Given f(x) = x2 + 1 and g(x) = 3x, find (fg)(x).

A.) (fg)(x) = x2 + 3x + 1

B.) (fg)(x) = 3x^2 + 1

C.) (fg)(x) = 3x^3 + 1

D.) (fg)(x) = 3x^3 + 3x

Answers

Answer: FOR NUMBER 2 (B)

Step-by-step explanation:

2. (fg)(x) = f (3x)

= (3x)2 + 1 = 3x^2 + 1 —> B

Write an equation of the circle with center (-6, 2) and diameter 10.

Answers

Solution:

Formula: (x + 6)² + (y – 2)² = 5²h = x coordinatek = y-coordinate

First, let's find the radius of the circle.

Diameter: 10 unitsRadius: 10/2 units = 5 units

Now, let's create an equation:

(x – h)² + (y – k)² = r²

Replace the given values of variables into the equation.

=> (x + 6)² + (y – 2)² = 5²

Image attached~

Learn more: https://brainly.com/question/26508068

NEED HELP QUICK!!


This circle is centered at the point (2,6), and the length of its radius is 7. What is the equation
of the circle?

Answers

Answer:

(x - 2)² + (y - 6)² = 49

Step-by-step explanation:

Equation of a circle formula:  (x - a)² + (y - b)² = r²

where (a, b) is the center of the circle and r is the radius

Given, center = (2, 6) and radius = 7

Substitute this information in the equation of a circle formula.

⇒ Equation of the circle:  (x - 2)² + (y - 6)² = 49

Other Questions
What did the Monroe Doctrine do?It declared war on Spain because of Spain's colonization of South America.It formed an alliance between the United States and Britain.It encourages European colonization of the Americas.It established an American protectorate over the Western Hemisphere. A parabola opens to the left. Which could be the equation of the parabola? (x 4)2 = 4(y 3) (x 4)2 = 4(y 3) (y 4)2 = 4(x 3) (y 4)2 = 4(x 3). David couldnt wait to tell his friend Maria the good news that he had gotten his acceptance letter from the university. Davids smile tells Maria before he can say anything. What form of Communication is he using? A. VerbalB. Nonverbal C. Written What is the area of this triangle480525675960 What is the volume of this sphere?Use a ~ 3.14 and round your answer to the nearest hundredth.1 m According to the theory of plate tectonics, where do most active volcanoes occur?. What times what gives you 15 but when added gives you 8? write 5 ways to manage emotions in a positive way Manny walks a total of 0.75 mile to and from school each day. If there are 25 days in a month, how many miles has he walked in all? Robert is purchasing shirts for his weekend soccer team. The shirts he wants to buy are normally $11 each but are on sale for $9 off. His team has a total of 9 players. How much will he spend to buy the shirts? Which agricultural practices result in methane emission? As country income level rises from middle-income to high-income, what do we expect will happen over time to the prevalence of tobacco smoking?. Which term is used to describe music that does not have a discernible underlying pattern of strong and weak beats 7a - 8 - 12a + 4 (please give steps) It is fitting that men bow to the ManThat gave life and bequeathed upon me his name.Escoge la respuesta correcta.Which word of the poem is capitalized In order to recelve special emphasis?LibertadO DejandoSeIberia please help im on a timer For a science project, Mrs. Williams third grade class kept track on how many days it rained during the month of April. The chart below shows their results. What percentage represents the fraction of days it rained on April?(It rained 12 days in April, and it did not rain for 18 days in April.) The cities Cattaro and Zara are controlled by what Italian republic: A chain weighs 12 pounds per foot. How many ounces will 4 inches weigh? Round your answer to the nearest tenth as needed. El permetro de un terreno rectangular mide 232 m si se sabe que el largo es 8m mayor que el ancho cules son sus dominaciones