Mathematics Middle School

Write and solve a system of equation for each problem?

A jar contains nickels and dimes. There is a total of 200 coins in the jar and their value is $14.55. How many dimes are in the jar?

Plz show the steps

Answers

Answer 1

Answer:

There are total of 80 dimes in the jar cuz...

n + d = 200 = n = 200 - d

0.05n + 0.1d = $14.00

0.05(200 - d) + 0.1d = $14.00

10 - 0.05d + 0.1d = $14.00

10 + 0.05d = $14.00

-10 -10

0.05d = $4.00

0.05d / 0.05 = $4.00 / 0.05

d = 80

Step-by-step explanation:

hope this helps... *credit to merxinda*

have a good day

Answer 2
There is 80 dimes in the jar

Related Questions

a spinner is split into three equal sections numbered one through three. what is the probability of spinning two threes in a row
A. 1/6
B. 1/12
C. 1/9

Answers

C. 1/9 is the probability

ah im stuck on this lol pls help

Answers

Answer:

y = 0,4x -1 or y = 2/5 x -1

Step-by-step explanation:

you can use the slope formula

m = y2-y1 / x2-x1

m = -1 - (-3) / 0 - (-5) = 2/5

Answer:

y = 2/5x - 1

Step-by-step explanation:

Points on the graph: ( -5, -3) and (0, -1)

Slope:

m=(y2-y1)/(x2-x1)

m=(-1+3)/(0+5)

m = 2/5

Slope-intercept:

y - y1 = m(x - x1)

y + 3 = 2/5(x + 5)

y + 3 = 2/5x + 2

y = 2/5x - 1

1.Where is the least change in the amount of money earned?

Answers

30 or 3 and 4 weeks hope this helps

Answer:

30 or 3 & 4 weeks

Step-by-step explanation:

Which sentence is correct?

A) -4 > 3
B) -4 < -6
C) -4 > -7
D) -5 > -4

Answers

C is the correct answer for your question.

Answer:

the same answer as them

i got 100:)

Step-by-step explanation:

plz help me with this!

Answers

Answer: $30.50

Step-by-step explanation:

Let's take our given

One child

Two adults assuming that the aunt and uncle are above 18 years of age

Let's add 5.50+12.50+12.50

$30.50

30.50 is your answer because you adding 5.50 to 12.50 times 2

2) Based on the data represented in the double line graph. Which statement is true? A) At 15 almost 9 times as many students worked. B) At 17 almost 4 times as many students worked. Eliminate C) At 17 almost 4 times as many students did not worked. D) At 16 the same number of students worked and did not work.

Answers

Answer:

b

Step-by-step explanation:

help me please will give brainliest to correct answer

Answers

Answer:

A

Step-by-step explanation:

Pretty sure it is A

Answer:

First One

Step-by-step explanation:

It makes more sense and has a cat-whisker

Pls help need a help ASAP

Answers

Answer:

first one is vertical, will you take another picture I cant see the whole line

First on is vertical

A cone has a diameter of 6 inches and a height of 6 inches. Find the volume of the cone to the nearest tenth. Use 3.14 for pi.

Answers

Answer:

The volume is 56.6 rounded

Step-by-step explanation:

56.6 rounded , this should be the correct answer I remember doing this in 7th grade

Which expression has the least value when x = 1000?

Answers

Answer: Could we see the choices?

Step-by-step explanation:

/8~937=3 which classify as 100 then divided by 25

Can someone help me, please??

Answers

Answer:

1. 4.5x - 151.89

2. -2x + 375

Step-by-step explanation:

1.

Start with -$126.89

Small deposit: x   (add)

Large deposit: 3.5x   (add)

Withdrawal: $25   (subtract)

-126.89 + x + 3.5x - 25 =

= -151.89 + 4.5x

= 4.5x - 151.89

Answer: 4.5x - 151.89

2.

Start with $350

Small withdrawal: x   (subtract)

Large withdrawal: x + 50   (subtract)

Deposit: $75   (add)

350 - x - (x + 50) + 75 =

= 350 - x - x - 50 + 75

= -2x + 375

Answer: -2x + 375

free pointssssssssss

What is the solution to the inequality -7x+37<-5 ?

Answers

Answer:

you should try math papa its freee

Step-by-step explanation:

4929291929283839292001010110

Which description describes the solutions to this inequality?

Answers

Answer: I am pretty sure the answer is all the possible numbers that are smaller than 64.

Explanation: 4^3 is 64 so you know it must be the top or bottom one. This leaves us with k<64, meaning k is the numbers less than 64. This is what I think the answer is. I am sorry if it is wrong.

20 points
Use either the commutative property or combine like terms to create an equivalent expression to from the equation 9 x j(2 + 5).

Answers

The answer should be “93j”
90j ? Sorry if I’m wrong!

lol ok stuck here too

Answers

Answer:

axis

Step-by-step explanation:

I don't know explanation but its the answer to you question i think

someone plz help me i will give brainliest just

Answers

Answer:

5) y = 3x + 1

6) For this question, I would just draw a line that is increasing, and then once it reaches 10 mins I would make a steep line going downward. Something like this: /\

7) Yes, Raoul is correct because Function A's initial value is 0 and function B's initial value is 3.

Answer:

need points

u did that to me and I will do it to u too

hey plz, help me I beg you plz answer the 3 images PLZ I WILL GIVE BRAINLIEST AND 10 PLUS PLZ I BEG YOU!!

Answers

Answer:

150 and 500 and the last one is around 200

Step-by-step explanation:

im pretty sure the other dude got it right. Good luck!

will mark brainliest
plz helppp meee i have 9 points now so plz make this worth it to answer this questionnn

Answers

Answer:

C

Step-by-step explanation:

Rectangle: 8*5=40

Triangle 1: (3*5)/2=7.5

Triangle 2: (3*5)/2=7.5

Trapezoid : 40+7.5+7.5=55

Answer:

C

Step-by-step explanation:

for the rectangle, its 8*5=40

for the triangles, they are both 3*5=15

and for the trapezoid, it is  55

Pls. Help 10 points help me pls anyone?

Answers

Answer:

your answer is correct and you got terrible data

Step-by-step explanation:

Answer:

its 5

Step-by-step explanation:

thank u................

Answers

Answer:i am sure it is

B

Step-by-step explanation:

PLZ HELP ME PLZ PLZ ..................

Answers

The answer is 2.5

I saw this question though, that's weird lol

I would assume 2.5 by division. You multiply 3 by 2.5 to get a result of 7.5. You can find this out by dividing 7.5 by 3.
Answer- 2.5

When would you estimate the length of an object
not a multi answer

Answers

when it’s necessary. .
When planning stuff out in a blue book like building something or making clothes

PLZ I NEED HELP, will give BRAINS

Answers

Answer:

0% of 36: 0

100% of 36: 36

25% of 36: 9

75% of 36: 27

Step-by-step explanation:

0% of any number is 0.

100% is the same number.

To find 25% you can divide by 4.

To find 75% you can divide by 4 and multiple by 3.

25% = 1/4

75% = 3/4

I hope this is helpful :)

Help plz
Is this a statistical questions?
What are the heights of all the players on the Atlanta Hawks basketball team?

Answers

Answer: Yes it is

Step-by-step explanation:

Answer :Yess

Step by step:

Pls help I'm confused on this!!!!
(Composite Figures)
Greg is replacing a countertop in his kitchen with a new granite countertop. The dimensions of the countertop are shown below. If the granite he chose costs $175 per square foot, how much will it cost?

Answers

It will be 5 cost and lien plz

The head of a nail is circular, as shown. The head of this nail has a diameter of 6 millimeters.

Which measurement is closest to the area of the head of this nail in square millimeters?

A. 9.42
B. 113.04
C. 28.26
D. 37.68

Answers

Answer:

its A

Step-by-step explanation:

Hope it helps

plz help due today...................

Answers

Answer:

No it won’t be easy to find because burying the treasure 30 ft away is really far so he wouldnt remember exactly where it is. I think if he made a “x” over the spot then it would be easier

Plz give brainliest if this helped :D

Step-by-step explanation:

Four triangles are shown. Based on these triangles, which statement is true?

Answers

Answer:

First one

Step-by-step explanation:

100+30=130 That is the rule for finding w

And z=50

Answer: the first one

Step-by-step explanation:

Tyler spent a relaxing afternoon watching movies. He watched movies for
2
1
2
hours. His brother watched the movies for
3
4
of the amount of time that Tyler did. What equation can be used to find out how much time Tyler’s brother spent watching movies?

Answers

Answer:

try 3 . 4 if it rong I'm sooo sorry

can someone plzz solve these

Answers

Okay so i’m thing that the number that is gray means that, that is the measure of the whole angle. If I am correct then that means all you have to do is subtract the angle given from the whole angle to get x. Here is what I mean.

1. (117° - 94° = 23°) so x = 23°


2. These are vertical angles, which means that they will equal each other. So x = 148°.


3. (174° - 68° = 106°) so, x = 106°


4. (50° - 32° = 18°) so, x = 18°


5. Okay so since this is a straight line, it the bottom half does not matter. The straight line equals 180°. So here is you equation.
(125° + x° + 30° = 180°. So let us add 125 & 30, which would get us 155°. Now let us subtract 155° from 180°, and that would get us, 25°. So x = 25°.


6. Once again these are vertical angles, meaning the will equal each other. So x = 113°.


7. So since x and 30° are on a straight line, x, 30° and the middle angle should equal 180°: Since the middle angle is vertical to 105°, the middle angle equals 105°. So now your equation is. 30° + 105° + x° = 180°. Now let us add 30° and 105° which would give us 135°. Now let us subtract 135° from 180° and that would give us, 45°, so therefore, x = 45°.



8. All you have to do is add all three angles. So your equation is:
(30° + 15° + 89°)
This will give you 134°. Therefore, x = 134°.


9. Once again these are vertical angles so x = 162°.


10. Okay so here your equation will be x = 90° + 29°. Imma tell you why.

Now the angle with the box in it, is obviously 90°. x is vertical from the whole angle on 90° and 29°, which means what? THEY SHOULD EQUAL EACH OTHER. So 90° + 29° = 119°. So
x = 119°.

I hope that I helped

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