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gulaghasi [49]
3 years ago
7

A bag held 4 black marbles, 2 red marbles, and 6 white marbles. I drew a black marble and did not replace it. What is the probab

ility of drawing a black marble next?
Mathematics
1 answer:
Helga [31]3 years ago
6 0

Answer:

P (black marble) =3/11

Step-by-step explanation:

We need to find the total number of marbles

4 black marbles+ 2 red marbles+ 6 white marbles= 12 marbles

We take away a black marble and throw it away

3 black marbles+ 2 red marbles+ 6 white marbles= 11 marbles

The probability of drawing a black marble is

P (black marble) = black/total

                           =3/11

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Stefan sells Jin a bicycle for $137 and a helmet for $17. The total cost for Jin is 140% of what Stefan spent originally to buy
MatroZZZ [7]

Answer:

Stefan originally spent $110.

Stefan made a profit of $44.

Step-by-step explanation:

Given that:

Stefan sold the bike and helmet for $137 and $17

Total amount = 137+17 = $154

This is 140% of the price Stefan originally paid.

Let,

x be the original price paid by Stefan

140% of x = $154

\frac{140}{100}x=154\\1.4x = 154\\\frac{1.4x}{1.4}=\frac{154}{1.4}\\x=110

Therefore,

Stefan originally paid $110 for the bicycle and helmet.

Profit made by Stefan = 154-110 = $44

Hence,

Stefan originally spent $110.

Stefan made a profit of $44.

4 0
3 years ago
What is the mean of the data displayed in the line plot below?
Ira Lisetskai [31]

The mean is the average.

Total the numbers and divide by the quantity of numbers.

2 +2 + 3 + 3 +4 +4 +4 +5 +5 +5 +5 + 6 = 48

48 / 12 = 4

The answer is B.4

8 0
2 years ago
A patient is ordered 10 units of Drug B per kg of body weight
Lostsunrise [7]

answer.

It will be 750 units

Step-by-step explanation:

we multiply the ten by sevety five and the answer is 750

3 0
2 years ago
The episodes of a TV program are each 40 minutes long.
Hatshy [7]

Answer:

160

Step-by-step explanation:

40*4=160

160 min is also equal to 2 hours and 20 min

╦────────────────────────────╦

│Hope this helped  _____________________│    

│~Derelis ____________________________ │

╨___________________________________╨                  

4 0
2 years ago
Read 2 more answers
Why don't parrallel lines cross
anzhelika [568]
Because they're parallel which means they stay side by side the whole time with the same distance between them
4 0
3 years ago
Read 2 more answers
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