Answer:
3,125
Step-by-step explanation:
25 out of 200 is 12.5%
and 12.5% of 25,000 is 3,125
(I'm not sure)
Answer: 0.81859
Step-by-step explanation:
Using the formula ;
Z = 
where u = mean
Therefore the probability that a student will finish the test between 40 and 70 will be :
P ( 40≤X≤70 ) = P(X≤70) - P(X≤40)
P ( 60-40/10) , P( 60 - 70 / 10)
= 2 , -1
= P (Z ≤ 2) - P( Z ≤ -1 )
From normal table , we have
0.97725 - 0.15866
Therefore the probability that a student will finish the test between 40 and 70 minutes = 0.81859
<span>Theroum: a proposition not self-evident but proved by a chain of reasoning.</span>
Answer: Choice A
This is a 45-45-90 triangle so the hypotenuse is sqrt(2) times longer than the leg
hypotenuse = leg*sqrt(2)
hypotenuse = 12*sqrt(2)
Answer:
You download 32 rock songs.
Step-by-step explanation:
*im a 7th grader so dont trust me with this answer lol*
The ratio 5 : 4 can also be written as the fraction 5/4.
The ratio pop songs, 40 : rock songs, r can be written as the fraction 40/r
Set an equation:
40/r = 5/4
Cross Multiply:
5r = 160
Divide 5 from both sides:
r = 32
There you have it, the amount of rock songs downloaded! Hopefully this helps!
