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KIM [24]
3 years ago
12

A bag contains 4 red marbles, 3 white marbles, and 7 blue marbles. You pick a marble without looking. Find the probability of dr

awing a white marble
Mathematics
1 answer:
astra-53 [7]3 years ago
6 0
The probability of drawing a white marble = \frac{Number  of  white  marbles}{Total  number  of  Marbles}

∴ the probability of drawing a white marble = ³/₁₄
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What is an exponent​
ValentinkaMS [17]
It refers to the number of times a number is being multiplied by itself ... Ex: two to the fourth power
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6 0
3 years ago
of 320 consumers polled, some purchase blu-ray movies, some only purchase movies on dvd, and some do both. if 300 people polled
Helga [31]

Answer:

20 people only buy dvds.

Step-by-step explanation:

There are two groups in this problem. One group of people that buys dvds and one that buys blu rays. The total amount of people who buy blu rays is 300, but there's an intersection between the groups and the size of this is 280 people who actually buy both. In order to find out how many people only buy DVDs we first need to figure out how many only buy blu-rays. That is:

people who only buy blu rays = people who buy blu rays - people who buys blu rays and dvds

people who only buy blu rays = 300 - 280 = 20

We can now calculate the amount of people who only buy dvds and that is:

people who only buy dvds =total amount of people - ( people who only buy blu rays + people who buy both)

people who only buy dvds = 320 - (20 + 280) = 320 - 300 = 20 people

3 0
3 years ago
3/4-2/4 I need help with this I don’t know what the answer is
sertanlavr [38]

Answer:

1/4 or decimal : 0.25.

Step-by-step explanation:

I'm pretty sure this is right

7 0
3 years ago
5t=24.5 what does t represent
Inessa [10]
Divide both sides by 5 to get t by itself, then you have your answer
4 0
3 years ago
Read 2 more answers
If the slope of line L is -2/5, what is the slope of line m so that line l and line m are perpendicular?
ki77a [65]
Perpendicular lines have negative reciprocal slopes. So if the slope is -2/5...to find the negative reciprocal, " flip " the slope and change the sign.
So we flip -2/5 and we get 5/-2...and now we change the sign...and we get 5/2. So our perpendicular slope will be 5/2.
3 0
3 years ago
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