Answer:
No of white balls = 5
Step-by-step explanation:
Given that,
Total no of red balls = 4
Total no of green balls = 6
The probability of not drawing a white ball in one draw be, 
We need to find the number of white balls. Let there are x balls.
The probability of drawing a white ball = 1 - the probability of not drawing a white ball
= 1 -2/3
= 1/3
Using the formula for solving probability of having a white ball.
Hence, there are 5 white balls.
Answer:
D is halved
Step-by-step explanation:
Given :
If n is doubled :
- D' = -dv/60(2n)
- D' = -dv/120n
- D' = D/2
When n is doubled, D (<u>the drop factor</u>) is half of its original value.
Given that the hall is rectangular in shape, then the shortest path that Amy must travel to reach Alice would be through the hall's diagonal.
Applying the Pythagorean theorem, with the length and width as the legs and the diagonal as the hypotenuse of the right triangle. Thus,
diagonal = √ ( 100² + 60²) = √13 600 ≈ 116.62 ft
The shortest distance, rounded off to the nearest foot, is 117 ft<span>. </span>
we are given with two points: (-8,8) and (0,1). in this case, we are asked for the equation of the line connecting the two. we first solve for the slope that is (8-1)/(-8-0) equal to 7/-8 or -7/8. We substitute to the point-slope form equation y-y1 = m (x-x1) that is y - 1 = -7/8 * x ; y = -7/8 x + 1
Answer:the son working alone will take 1¹/₂ hours
Step-by-step explanation:
Step 1
let x represent the hours that the son needs to wash and wax the car alone thus his rate is 1/x cars per hour
While
the rate of the father is 1/3 cars per hour
, working together rate is 1/1 cars per hour.
Step 2
Writing it mathematically, becomes
1/x + 1/3 = 1/1
Dividing through by 3x so all denominations can be rqual to 1 , we have
3 + x = 3x
3= 3x-x
3= 2x
x= 3/2
Therefore the son working alone will take 1¹/₂ hours
