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podryga [215]
3 years ago
12

A game at the school carnival involves drawing colored marbles out of a bag for a prize. If you draw a red or blue marble, you w

in. If you draw a green or yellow marble, you lose. After each marble is drawn, it is put back in the bag.
You watch several people play with the following results:

G G G B Y G Y G G B G R B Y G R G B Y Y

Based on your observations, what is the probability that you will win?
A
0.20
B
0.30
C
0.45
D
0.70
Mathematics
1 answer:
mina [271]3 years ago
4 0
All up there are 20 marbles and only 6 of those are chances of winning so we make it into a fraction 6/20 then times 20 by five to get to 100 (what ever we do to the bottom we do to the top) times 6 by five giving you a fraction of 30/100 then divide 30 by 100 giving you 0.30 ANSWER EQUALS = 0.30
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There are 5 boys in a class of 14 students. What is the ratio of boys to girls?
just olya [345]
The answer would be 5:9! :)
5 0
3 years ago
Read 2 more answers
Solve for k:<br> 310 – (30 x 7) = 5 x k
tester [92]

Answer:

k=20

Step-by-step explanation:

ph*tomath (the app) is your friend btw because this would be really easy to solve using that but

solve for k:

simplify the left side as 310-210 then =100

so 100=5k

divide by 5 and k=20

7 0
3 years ago
- 5<br> 4<br> =<br> 2x - 3<br> 5x -5
Zinaida [17]

Answer:

x = 49/33

Hope this helps you! Even though there's no explanation... (I'm really bad at explaining, I'm just good at doing...)

3 0
3 years ago
Find the surface area and volume of each figure. Round each answer to the nearest hundredth.
Llana [10]

Answer: Surface area is equal to 200cm^{2}

Volume is equal to 333.33cm^{3}

Step-by-step explanation:

First, let's do surface area.

The surface area of a pyramid is equal to 1/2(perimeter of base)(lateral height) + area of the base

The perimeter of the base is 10(4) = 40; as the base is a square with a side length of 10.

The lateral height is given as 5 cm.

The area of the base is 10(10) = 100.

We can plug those numbers into the equation to get 1/2(40)(5) + 100, which comes out to be 200cm^{2}.

Now for volume.

The volume of a pyramid is equal to 1/3(area of the base)(height).

We already have the area of the base, which is 100.

The height is given as 10 cm.

Plugging those numbers into the equation, we get 1/3(100)(10), which is 1000/3 or about 333.33cm^{3}.

Hope this helps!

6 0
3 years ago
If EH = 76, calculate DI.
Montano1993 [528]

Answer:

DI = 38

Step-by-step explanation:

Δ EHC and Δ DIC are similar and ratios of corresponding sides are equal, that is

\frac{DI}{EH} = \frac{DC}{EC} , substitute values

\frac{DI}{76} = \frac{1}{2}  ( cross- multiply )

2DI = 76 ( divide both sides by 2 )

DI = 38

4 0
3 years ago
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