Answer:
Step-by-step explanation:
The diagram is shown in the attachment.
By the altitude -leg rule :
This implies that:
By cross multiplication:
Take square root to get:
Using the Pythagoras Theorem:
Answer:
Working alone, the faster pipe can do the work in 3 hrs; the slower pipe can do the work in 6 hrs.
Step-by-step explanation:
Answer:
The equation for finding the hypotenuse is:
c^2+c^2=h^2
For example, in the first exercise:
8^2+10^2=164^2
For clearing the equation, find out the root of 164=
12.8
Hypotenuse of the first triangle is 12.8!
Let me help you with the next, if you still dont get it:
8^2+13^2=233^2
Root of 233: 15.2
Hypotenuse of second triangle is 15.2!
Answer:
(c) Multistage sampling
Step-by-step explanation:
Multistage sampling is a technique of sampling in which the population is divided in different stages or groups with the goal of reducing the sample size at each stage.
Here, multistage sampling is being used to obtain the sample of undergraduate students in the United States.
Hence, the correct option is (c), Multistage sampling.
Well, we know that Stacy uses one red bead for every 4 blue beads. So, we can determine that 1 r=4 b. We know that 4+1=5, so 5*8 is 40 (our total). So ti find out how many blue beads she used we would do 4*8=32. So our answer would be 32.