Answer:
2.86%
Step-by-step explanation:
assuming there is no replacement
There is a total of 6 envelopes
Since the question is asking for red, then green, then red, order is very important
The probability of a red is 3/7
Since we have selected 1 envelope, there are only 6 total envelopes left so the probability of a green is 1/6
Then we need a red again
Since we have selected 2 envelopes, one of which is red, there are only 5 total envelopes and 2 red envelopes so the probability of a red is 2/5
Now we multiply all of these so 3/7x1/6x2/5 = .02857142857
To find the percentage, you multiply by 100 so 2.857142857
Im pretty sure they want you to estimate it so 2.86% is what I would put but it depends on your teacher
Answer:
The slope and y-intercept of the table are greater than the slope and y-intercept of the equation.
Step-by-step explanation:
The slope of y = 4x + 5 is 4 and the y-intercept is (0,5).
The slope of the table is found by subtracting two points from the table in the formula 
.
This means that the function increases by 5 for every x value that increases by 1. Knowing this, you can work backwards by subtracting 5 to find when x=0 (the y-intercept). When x=1 then y= 11. When x =0 then x =6. The table has the y-intercept (0, 6)
The slope and y-intercept of the table are greater than the slope and y-intercept of the equation.
This is true since 5 > 4 and 6>5.
Solve the equation 1/30 + 1/45 = 1/x
where x is the required time
multiply thru by 90x:-
3x + 2x = 90
x = 90 / 5 = 18
answer 18 minutes
