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

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

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:

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

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

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

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

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

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

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:

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

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

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!

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

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

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

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

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

Answers

Answer:

you should try math papa its freee

Step-by-step explanation:

4929291929283839292001010110

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 :)

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

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

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

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:

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:

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:

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:

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

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

Answers

Answer:i am sure it is

B

Step-by-step explanation:

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!

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.

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:

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