(1) is C because hydro is water
(2) is C because the mantle is made of mostly Nickel and some other metal I don’t remember
(3) is C because geo is rock
The total number of students take speech at rocky valley college is 4806
Average means the "central" value of a set of numbers. To calculate it: add up all the numbers, then divide by how many numbers there are.
Given
Number of students in the rocky valley college = 14418
Student who take speech = 1/3
So, the total number of students who took part in speech is
=> 14418 x 1/3
=> 14418/3
=> 4806
To know more about Average here
brainly.com/question/2906096
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Answer:
3/7
Step-by-step explanation:
The first black marble is 10/15 and the second is 9/14. Multiply them together to get 3/7 after you simplify it.
we know
distance =time *speed
from given question we have following equation
4*t+(1.5-t)*8=10
4*t+12-8t=10
12-4t=10
-4t=10-12
4*t=2
t=0.5 hour
hence at speed 4 miles per hour he crosses 4*0.5=2 miles
at speed 8 miles per hour he crosses 8*(1.5-0.5)=8 miles
