Answer:
C. 100 random people
Step-by-step explanation:
This is a more random method that can get a better feel for the general people. Hope this Helps!
Answer:
1. After rearranging the formula as 's' i.e speed is the subject will be given as
.
2. The average speed of a truck that travels a journey of 748 km in 11.5 hours is 65.04 kilometre per hour.
Step-by-step explanation:
Ans 1. subject means it come first in the sentence, hence here question is like write speed first in the formula so we have
![speed = \frac{distance}{time} \\ss = \frac{dd}{tt}](https://tex.z-dn.net/?f=speed%20%3D%20%5Cfrac%7Bdistance%7D%7Btime%7D%20%5C%5Css%20%3D%20%5Cfrac%7Bdd%7D%7Btt%7D)
Ans 2.
Given :
Total distance of a journey = 748 km
Total time taken for the journey = 11.5 h
To Find:
Average speed =?
Solution :
average speed is defined as of total distance covered divided by total time taken.
So, we have
![\textrm{average speed} = \frac{\textrm{total distance covered}}{\textrm{total time taken to complete total distance}} \\= \frac{748}{11.5} \\= 65.04\ km/h](https://tex.z-dn.net/?f=%5Ctextrm%7Baverage%20speed%7D%20%3D%20%5Cfrac%7B%5Ctextrm%7Btotal%20distance%20covered%7D%7D%7B%5Ctextrm%7Btotal%20time%20taken%20to%20complete%20total%20distance%7D%7D%20%5C%5C%3D%20%5Cfrac%7B748%7D%7B11.5%7D%20%5C%5C%3D%2065.04%5C%20km%2Fh)
Because you are multiplying you add the exponents together. -5+6=1 so you only have 3 to the power of one left over or just 3 in the parentheses. Then multiply 2x3 to get 6.
8x - 3 = -19
8x = - 19 + 3
8x = -16
x = -16/8
x = -2
answer: the number is negative 2