Question

A jar contains 14 nickels, 10 dimes, 6 quarters, and 22 pennies. A coin is chosen at random from the jar. What is the probability that the coin chosen is a dime?

Answer 1

10/52

Answer 2

Add all of them together (14+10+6+22=52). There are 10 dimes, so it would be a probability of 10/52.

Answer 3

but am been told that it could be 5/21,1/21,5/26,1/26

Answer 4

Your right, I forgot, you also have to simplify 10/52.

Answer 5

You would do that, by dividing the numerator and the denominator both by 2. That would give you 5/26. (10/2=5, 52/2=26)

Answer 6

Do you get it?

Answer 7

would it be 5 over 26

Answer 8

yes.. 5/26 means the same thing as 5 over 26. :)

Answer 9

thank u been working on that for 20min.

Answer 10

your welcome

Answer 11

i got one more if u can help

Answer 12

A triangle is graphed in the coordinate plane. The vertices of the triangle have coordinates (3, 1), (1, 1), and (1, 2). What is the perimeter of the triangle?

Answer 13

do you what the distance formula is?

Answer 14

It is: d = √(x2 - x1)^2 + (y2 - y1)^2

Answer 15

You would use this formula to find the perimeter of each side of the triangle.

Answer 16

Let name the sides: A: (3, 1) B: (1, 1) C: (1, 2)

So first you would find side AB. You would put in the values into the distance formula.

Answer 17

The coordinates of A are x1 and y1 and the coordinates of B are x2 and y2.

So: x1 = 3, x2 = 1, y1 = 1, y2 = 1

d = √(x2 - x1)^2 + (y2 - y1)^2
d = √(1 - 3)^2 + (1 - 1)^2
d = √(-2)^2 + (0)^2
d = √(4) + (0)
d = √4
d = 2
So the distance of AB is 2 units.

Answer 18

the distance equals the perimeter

Answer 19

Next, you would find the distance of the next side, which is BC.

Do you understand so far...?