150 times
out of the first 5 cards, there is a 3/5 chance of drawing a yellow.
if you replace the card and draw again, you still have a 3/5 chance of drawing a yellow card.
keep doing this process for 250 draws, each draw will always have 3/5 chance of drawing a yellow card.
so 3/5 +3/5 +3/5 +... (250 times) = 250 x 3/5 = 150
Answer:
0.002
Step-by-step explanation:
cuz
Answer:
31 Minutes
Step-by-step explanation:
4.78 = 0.15 + 0.58
0.15m = 4.78 - 0.58
m = 4.78 - 0.58 divided by 0.15 = 28 minutes
So in total we have 28 + 3 = 31 minutes
Answer:
25.2 minutes
Step-by-step explanation:
step 1
Find the area of the given wall
![A=(7)(6)=42\ ft^2](https://tex.z-dn.net/?f=A%3D%287%29%286%29%3D42%5C%20ft%5E2)
step 2
we know that
You can paint 75 square feet of a surface every 45 minutes
so
using proportion
Find out how long it takes you to paint a surface area of 42 square feet
![\frac{75}{45}\ \frac{ft^2}{min}=\frac{42}{x}\ \frac{ft^2}{min}\\\\x=45(42)/75\\\\x=25.2\ min](https://tex.z-dn.net/?f=%5Cfrac%7B75%7D%7B45%7D%5C%20%5Cfrac%7Bft%5E2%7D%7Bmin%7D%3D%5Cfrac%7B42%7D%7Bx%7D%5C%20%5Cfrac%7Bft%5E2%7D%7Bmin%7D%5C%5C%5C%5Cx%3D45%2842%29%2F75%5C%5C%5C%5Cx%3D25.2%5C%20min)
8000 is 1000 times larger than 8