Mathematics High School

Layla emptied out her change jar to buy a new binder for school. She found 147 coins consisting of dimes and nickels that totaled $11.65. Write a system of equations that could be used to determine how many dimes, d, and how many nickels, n, Layla had in her change jar.

Answers

Answer 1

Answer:

d + n = 147

0.10d + 0.05n = 11.65

d = 86, n = 61

Step-by-step explanation:

Let

Number of dimes = d

Number of nickels = n

Total coins = 147

Total value = $11.65

d + n = 147 (1)

0.10d + 0.05n = 11.65 (2)

From (1)

d = 147 - n

Substitute d = 147 - n into

0.10d + 0.05n = 11.65

0.10(147 - n) + 0.05n = 11.65

14.7 - 0.10n + 0.05n = 11.65

- 0.10n + 0.05n = 11.65 - 14.7

-0.05n = -3.05

n = -3.05 / -0.05

= 61

n = 61

Substitute n = 61 into

d + n = 147

d + 61 = 147

d = 147 - 61

d = 86

Related Questions

PLEASE HELP ME FASTTT!!

Answers

Negative 2 and positive 4

Find the equation of the linear function represented by the table below in slope- intercept form. х: -2, 2, 6, 10 y: -5, 7, 19, 31

Answers

Answer:

y = 3x + 1

Step-by-step explanation:

Slope-intercept form is y = mx + b.

To find the slope (m), you use the equation (y1-y2)/(x1-x2). Plug in your points (-2, -5) and (2, 7) to get (-5 - 7)/(-2 - 2). Simplify the formula to get a slope of 3. This is your variable m.

To get the entire equation, finding b in the process, you use the formula y - y1 = m(x - x1). Replace m with 3. Using the point (-2, -5), replace it with (x1, y1) respectively to get y + 5 = 3(x + 2). Distribute to get y + 5 = 3x + 6. Isolate the y to get your final answer: y = 3x + 1.

What is the product of 7 (-3)

Answers

Answer:

-21

Step-by-step explanation:

7 x 3 =21

7 x -3= -21

hope this helps

Answer:

-21

Step-by-step explanation:

7 × (-3) = -21

A positive times a negative is always a negative.

WILL GIVE 100 POINTS TO BEST ANSWER NEED HELP FAST!!!!! AND BRAINLIEST
The coordinate plane below represents a community. Points A through F are houses in the community.
Part A: Using the graph above, create a system of inequalities that only contains points B and F in the overlapping shaded regions. Explain how the lines will be graphed and shaded on the coordinate grid above. (5 points)

Part B: Explain how to verify that the points B and F are solutions to the system of inequalities created in Part A. (3 points)

Part C: John wants to live in the area defined by y > 2x − 5. Explain how you can identify the houses in which John is interested in living.

Answers

Answer:

I don't know buh download socratic for the answer nd explanation

1/2 más 1/3 es igual

Answers

solución:

1/2 más 1/2 es 5/6

Espero esto te ayudo.

¿Por favor avísenme si es correcto?

Can someone please help me I really don’t understand this

Answers

Answer:

Umm sorry i thought i knew it But my answer was wrong. I'm sorry and i hope you found the answer:)

Step-by-step explanation:

a.55=30x+50y
b.45=30x+50y
c.substitution
d.

55 and 45

I tried ! Hoped this helped ! Mark brainly if I helped!
Have a nice day!!!!!!!!!!!!!!!!

Use the Percent Proportion to solve the following.
Find 32% of 135

Answers

Answer:

43.2

Step-by-step explanation:

convert percentage (32%) by moving decimal to left 2 places = 0.32

135 * 0.32 = 43.2

Solve.
9x + 6y = -3
y = -8

Answers

Answer:

Step-by-step explanation:

9x+6y=-3

9x+6(-8)=-3

9x-48=-3

9x=45

x=5

Answer:

x=5, y= -8

Step-by-step explanation:

PLEASE HELP FAST! I'LL LIST U BRAINIEST IF U ANSWER RIGHT!

Part A: Solve the following equation: 8 + 2(x - 3) = 3x - 3 (2 points)

Part B: Solve the following absolute value equation: |2x + 6| = 8 (4 points)

Part C: Solve the following inequality: -5(x + 1) > 30 (2 points)

Part D: f(x) = 4x - 3. Find f(5) (2 points)

Answers

Hey I just want you know that I was going on a question about the next week of the following day and I am not going on vacation yet I will have a good day at work and I)7 be 88

math problem.
sdvvccc

Answers

1.5/10=4.5/x
10*4.5=45
45/1.5=30

30 miles is your answer

PLEASE HELP ME PLEASE

Answers

Answer:

8.5

Step-by-step explanation:

15x+10+6x+2=180 (add up to we 180 because they are alternate eachother

21x+12=180 combine like terms

21x=178 subtract 12 from both sides

x~~8.5 divide both sides by 21

1.) which numbers are in order from greatest to least;

A. -20, -5, 10, 15, 40
B. -5, -20, 10, 15, 40
C. -5, 10, 15, -20, 40
D.40, 15, 10, -5 , -20

Answers

Answer:

Step-by-step explanation:

40 is the highest because it's a positive number and -20 is the lowest cause it's negative

Answer:

D is

Step-by-step explanation:

Once you go past negatives, the "bigger" numbers are smaller than the "smaller" numbers. (-20>-60)

THEME
1. The height of a cylinder is 6 centimeters. The circumference of the base of the
cylinder is 187. Solve and explain how you would find the measurement of they
cylinder's volume in cubic centimeters. Be specific, include any formulas you will
need, identify the components of the cylinder, explain whether you need to round,
and do not forget to include units of measurements.
Academic Vocabulary:
height cylinder base radius circumference pi substitute volume
cubed squared formula round

Answers

Answer:

Step-by-step explanation:

Hey do you have the answer?

WHAT IS 5+5+5+5?WHAT IS 5+5+5+5?

Answers

Answer:

Step-by-step explanation:

20?

Answer: 20

Explanation:

5x4=20

Reva is playing a bean-bag toss game. For each bag that misses the board, the player scores 8 points. Reva misses the board 4 times in one game. What is her total score for those 4 tosses?

Answers

Answer:

a. -32

Step-by-step explanation:

Who knows how to do this I TRULY NEED HELP

Answers

Answer:

Yes

Step-by-step explanation:

two of the different sides match

When I’m doubt C it out

3x−6 = 9
please answer

i lost 1000 points and 10 brainliest because someone reported and got all my answers taken down. smh

Answers

the answer is 5 because you have to add 6+9=15 then divide 3x and 15 and that makes x=5

Answer:

x = 5

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Equality Properties

Step-by-step explanation:

Step 1: Define Equation

3x - 6 = 9

Step 2: Solve for x

Add 6 to both sides: 3x = 15Divide 3 on both sides: x = 5

Step 3: Check

Plug in x into the original equation to verify it's a solution.

Substitute in x: 3(5) - 6 = 9Multiply: 15 - 6 = 9Subtract: 9 = 9

Here we see that 9 does indeed equal 9.

∴ x = 5 is the solution to the equation.

Lumpy leaves Miami at 12 noon traveling north at 55 mph. Stumpy leaves at 3 pm traveling north at 70 mph. In how many hours will Stumpy crash into Lumpy’s back?

Answers

Answer:

at 4

Step-by-step explanation:

The Biology Club has 45 members, 35 girls and 10 boys. What is the ratio of
girls to boys in the Biology Club?
A. 7:2
B., 8:3
C. 2:7
SUBMIT

Answers

A: 7:2
35/7=5
10/2=5
the others don’t equal the same thing

They gave you the andwerrrreererreeeeeeeeerrrrr

Ariel wants to save a total of 50$ to buy a new jacket.She has saved 10$ so far which percentage represents the fraction of the total that Ariel saved so far

Answers

Answer:

20%

Step-by-step explanation:

The diameter of a cylinder is 48 meters. What is the radius?

Answers

24 is the answer your welcome

Cna anyone help with this one for me? I’ll give 5 stars

Answers

Answer:

Step-by-step explanation:

The answer would be C 3d + 8 is less than or equal to 35.

The tank holds no more than 35, so there can be 35 fish in the tank so it can be equal to 35.

there is already 8 fish from the old aquarium and there are 3 new fish per day so the 3 gets the variable

what is surface area of this wedge (pic atrached)

Answers

Answer:

360 ft

Step-by-step explanation:

6 x 5 x 4 x 3 = 360

b. 360 ft

NEED HELP ASAP PLEASE!!!!!!!!!

Answers

Answer:

1) m=-7/5

2) m=-7/5

3) parallel

Step-by-step explanation:

the first part:

graph the points and then find the slope

m=-7/5

the second part:

slope= m in y=mx+b

m=-7/5

the last part:

they are parallel because they have the same slope

Answer:

slope of two points is m=-7/5

SLOPE OF THE EQUATION GIVEN -7/5

PARALELL

Step-by-step explanation:

Can someone help me on this! plz help me and tell me how u got the answer.
and plz dont troll.....

Answers

Answer: The last choice, 2x + 3y = 10

Step-by-step explanation: This equation will have the same slope. The line will be parallel to the original side , just higher up on the grid.

WILL GIVE BRAINLYEST PLZ HELP FAST
Simplify 20 ÷ 4 + 6 x 2.
A. 22
B. 4
C. 17
D.5/4

Answers

Answer:

C) 17

Step-by-step explanation:

If u use PEMBDAS, you'll get 17 as you answer

Answer :17

Explanation: We use the order of operations which we can use the acronym called PEMDAS which states we have to divide and multiply first then add last (: have a nice day

What is the value of x in this figure?

Answers

Answer:

x = 65 degrees

Step-by-step explanation:

Sum of all three sides in a triangle is 180

48 + 67 + n = 180

180 - (48 + 67) = 65

The missing angle and angle X are vertical angles, so they are the same angle.

angle X = 65 degrees

What is the value of this function evaluated at f(-3): f(x) = 2x2+ 5x - 9? F -6 G -42 H 42 J 12

Answers

Answer:

f(-3) = -6

Step-by-step explanation:

f(x) = 2x^2+ 5x - 9

We are to find f(-3)

f(-3) = 2(-3)^2+ 5(-3) - 9

f(-3) = 2(9)-15 - 9

f(-3) = 18 -15 -9

f(-3) = 18-24

f(-3) = -6

this is another prodigy question so please help

Answers

Answer:

918

Step-by-step explanation:

i know it

Cnidarians are another major group of invertebrates. Jellyfish, coral, hydra and anemone are examples of cnidarians. They have soft bodies and no heads. They have stinging tentacles that they use for defense and to capture prey. Cnidarians have radial symmetry. That means that their parts are arranged around a center. If you were to draw a line to cut them in half in any direction, the two sides will always match. Radial symmetry is often a characteristic of more simple animals than bilateral symmetry, where there is only one line you could draw to make two sides match. With bilateral symmetry, different body parts may have different functions. With radial symmetry, the entire body may perform all life functions.

Jellyfish do not have (what?)

a. heads.
b. tentacles.
c. symmetry.
d. soft bodies.

Answers

a. heads

A jellyfish has no ears or eyes or nose and no brain or heart. They do not even have a head as their body is almost totally made of water and is soft having no bones at all.

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