Answer:
36 passengers
Step-by-step explanation:
Maria averages 20 passengers every 20 minutes, so she places 1 passenger per minute.
Sal averages 20 passengers every 25 minutes, so he places 0.8 passenger per minute.
If they work together, they can place (1 + 0.8) passengers = 1.8 passengers per minute.
In 20 minutes, they can load
1.8 passengers/minute * 20 minutes = 36 passengers
Answer:
Number line graph with closed circle on 12 and shading to the right.
Explanation:
if you see Ezra needs $37 and if she has less than $12 then she will not have $37. she needs exactly $12 or more. The closed circle tells us that 12 is a answer and the shading to the right means more than 12.
Answer:
41.2 to the nearest tenth.
Step-by-step explanation:
There are a total of 6 numbers.
So the mean m is (6 + 6 + 7 + 17 + 20 + 20) / 6
= 76/6
= 12.67.
Calculating x - m :
6 - 12.67 = -6.67
6 - 12.67 = -6.67
7 - 12.67 = - 5.67
17 - 12.67 = 4.33
20 - 12.67 = 7.33
20 - 12.67 = 7.33
Now squaring each of these we get (x - m)^2 = 44.49, 44.49, 32.15, 18.75,
53.73, 53.73
Now the sum of these ∑(x - m)^2 = 247.34
So the variance = ∑ [(x - m)^2] / 6
= 247.34 / 6
= 41.2 to the nearest tenth.
7 is 71+7/3+78
8 is 60x2x2
