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ira [324]
3 years ago
11

How do you find the length in feet of a circle

Mathematics
1 answer:
Alika [10]3 years ago
4 0

there is no length in a circle

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Sue has 100 dimes and quarters. If the total value of the coins is $21.40, how many of each kind of coins does she have?
Nookie1986 [14]

Answer:

There would be 24 dimes and 76 quarters.

Step-by-step explanation:

In order to find this, start by defining the number of dimes by x and the number of quarters as y. Now we can create a system of equations. Make the first about the total number of coins.

x + y = 100

Make the second about the amount of money.

.10x + .25y = 21.40

Now we can solve using elimination by multiplying the second equation by -4 and adding through.

x + y = 100

-.40x - y = -85.60

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

.60x = 14.4

x = 24

Now we can use the amount of dimes we have to find the number of quarters.

x + y = 100

24 + y = 100

y = 76

3 0
3 years ago
the perimeter of a room is 88 feet. the ratio of its length to its width is 7:4. you want to tile the floor with 18 inch square
yulyashka [42]
Hello my friend is in a lot that way we have some stuff in our garage that way I dont I know how much we have a little thing in our school so I will can I have the answer and you can get them for the kids
5 0
3 years ago
Adam is going to make concrete. He is going to use 180 kg of cement. 375 kg of sand. 1090 kg of stone. Cement, sand and stone ar
hichkok12 [17]

Answer:

2 bags of stone

Step-by-step explanation:

Lets do one at a time.  Cement first.

he needs 180 kg of cement.

1 bag is 25 kg, so in total he needs 8 because 7 would get him 175, so he would need just a little bit more.  And I assume you can't but part of a bag he needs to but one full more bag.  If he already has 8 then he doesn't need any more.

Needs 375 kg of sand

Each bag has 22.5 kg inside

he needs 17 bags total of sand because 16 would only give 360

Since he already has 19 bags he has 427.5 kg of sand so he doesn't need any more.

Needs 1090 kg of stone

Each bag has 50 kg of stone

He needs 22 bags since 21 would just give him 1050 kg

He has 20 so he needs two more bags

So in total he needs two bags of stone.  Let me know if there was anything you didn't understand.  

5 0
3 years ago
Somebody help me with with please!!
ra1l [238]
I think it’s y= -2/2x +2? Something like that I may be wrong lolz
7 0
3 years ago
In a survey of music preferences 81 out of 450 students said that they preferred country music what percent of the students pref
Kazeer [188]
To write 81/450 as a percent have to remember that 1 equal 100% and that what you need to do is just to multiply the number by 100 and add at the end symbol % .
<span>
81/450 * 100 = 0.18 * 100 = 18% </span>
81/450 as a percent<span> equals </span><span>18%</span>
6 0
3 years ago
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