The chance of picking a almond cookie the first time:
you have 6 cookies, 3 of them are almond
So the chance of taking an almond cookie is
The second time there are 5 cookies left, 2 of them are almond cookies
The chance of taking an almond cookie is
To know the probability of picking two almond cookies in a row, multiply the changes:
The chance of taking two almond cookies is 1/5
Answer:
155 cm2
Step-by-step explanation:
3 x 4/2=6
6 x 2=12
5 x 11=55
55 x 2=110
3 x 11=33
12+110+33=155
I found the surface area of the triangular prism by calculating every side of the area and add it up.
Answer:
p= 0.9995 and we can conclude that students receiving aid is more than 50% according to the sample results in 2% significance level.
Step-by-step explanation:
: less than or equal 50% of students at his college receive financial aid
: more than 50% of students receive financial aid.
According to the nul hypothesis we assume a normal distribution with proportion 50%.
z-score of sample proportion can be calculated using the formula:
z=
where
- X is the sample proportion (0.65)
- M is the null hypothesis proportion (0.5)
- s is the standard deviation of the sample (
) - N is the sample size (120)
then z=
≈ 3,29
thus p= 0.9995 and since p<0.02 (2%), we reject the null hypothesis.
Because the triangle is an equilateral triangle, you know that all of the angles are equal to 60°. That means that you can use trigonometry to find the height, which would be sin(60) × 20 = 17.32.
Again, because it is an equilateral triangle, all sides are equal as well, meaning that the base is also 20cm. To find the area of the triangle, we must do (20 × 17.32)/2 = 173.2cm^2, which is the area.
I hope this helps!
Well 63 divide by 9 is 7 but 9 divide by 63 is .14
