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Ne4ueva [31]
3 years ago
15

There is a bag filled with 4 blue and 5 red marbles. A marble is taken at random from the bag, the colour is noted and then it i

s not replaced. Another marble is taken at random. What is the probability of getting at least 1 red?
Mathematics
1 answer:
Vera_Pavlovna [14]3 years ago
8 0

Answer:

2/9?

Explanation:

4+5=9

5>4

2x chance

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Michael has $10 to put in a savings account . He has two options for a saving account : Option 1 will add $ 100 to his account e
nekit [7.7K]

Answer:

Option 1:

He starts with $10, and for each week, we add $100

Then his balance as a function of weeks will be:

f(w) = $10 + $100*w

option 2.

Again, we start with $10, and for each week that passes this is doubled, then the equation will be:

g(w) = $10*(2)^w

Now, we want in week w = 7 to have at least $700, then we need to replace w by 7 in both equations and see which one is better.

option 1:

f(7) = $10 + $100*7 = $710

With option 1 he will have enough

option 2:

g(7) = $10*(2)^7 = $1280

Again, he will have more than $700 in week 7, and we can clearly see that this option is better.

5 0
3 years ago
A deck of cards contains 10 black cards and 10 red cards. The first card drawn is not replaced before drawing the second card. W
Virty [35]
<h3>Answer:  9/38</h3>

Reason:

There are 10 red cards out of 10+10 = 20 total.

10/20 = 1/2 is the probability of selecting a red card.

If the red card is not put back (i.e. "no replacement"), then the chances of getting another red card is (10-1)/(20-1) = 9/19

Multiply the two fractions mentioned to get the final answer.

(1/2)*(9/19) = (1*9)/(2*19) = 9/38

3 0
2 years ago
Read 2 more answers
What has a head, a tail, is brown, and has no legs
allochka39001 [22]

Answer:

A penny

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
The equation y = 2x + 1 is a function rule.<br> x y<br> 0 <br> 1<br> 2<br> 3
Nimfa-mama [501]

Answer:

when you multypluie uwqhejqw

Step-by-step explanation:

qwveqeqweqvqeqve

8 0
3 years ago
What is the equation of the following line? (0,0) (6,2)
leva [86]

If you want it to be a slope intercept form, the first you have to find slope.

y2-y1/x2-x1

2-0/6-0

2/6 = 1/3

Then you need to find the y intercept. Plug in the x and y value in y=mx+b.

2=1/3(6)+b

2=2+b

0=b

ANSWER: y=1/3x+0

Hope this helps and is correct :)

8 0
4 years ago
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