Answer:
4.19 inches
Step-by-step explanation:
Your goal is to find the circumference of the donut and then divide that by 3 to get 1/3 of the outer edge of the donut.
Circumference is 2
r
The diameter (double the radius) is 4, so radius (r) is 2
2 * pi * 2 = 4 pi = 12.57 (round to hundredth)
12.57/3 = 4.19
keep in mind that dividing by 3 is the same as multiplying by 1/3
Answer:
JL = 62 (units)
Step-by-step explanation:
OK, Here we can use the part whole postulates theorem to assist us:
JL consists of parts JK + KL such that, through substitution,
5x + 2 = 27 + ( 3x - 1 )
Here we can solve for x to determine 5x + 2, and thus the value of JL:
5x + 2 = 27 + 3x - 1
2x + 2 = 27 - 1
2x + 2 = 26
2x = 24
x = 12
Substitute the value of x for 5x + 2, to get JL:
JL = 5 (12) + 2
JL = 60 + 2
JL = 62 (units)
So we are given that the mean is 42% and the sd (standard deviation) is 8%
Assuming our data is normal we can use the 68-95-99 rule
So one thing you should realize is that 42% + 8% is 50% which is passing. That is one standard deviation higher. So we use:
100 - 68 - 13.5 - 2.35 - 0.15 = 16. That means 16% of students passed the test. Which is terrible. They probably need to hit the books more.
Anyways if you have any question feel free to message me!
Hopes this helps!
3/10+ 2/5
= 3/10+ 4/10 (common denominator is 10)
= 7/10
The final answer is 7/10~
