Answer:
It will take 4.5hrs to cover the same distance
The constant of variation,k=252
Step by step explanation
Given that,
From the question
Time=4hr
Speed=63km
By substitution we obtain,
Cross multiplying we get,
Now,
speed=56km
Distance Covered=252km
By substitution:
We obtain,
Cross multiply
Divide through by 56
From the formula,
Which means that, speed and time varies inversely.
Let k be variation constant
This implies that
Taken,
Time=4hrs
speed=56km
<span>We have to calculate the length of the missing side.
Use the Pythagorean theorem:
I think. Your answers to choice are wrong.
</span>
Distribute the six: 6y+6x
<h3>Answer: C) none of the equations are identities</h3>
If you plugged theta = 0 into the first equation, then you would have
sin(45) + cos(45) = sin(0) + cos(0)
sqrt(2) = 1
which is a false equation. We don't have an identity here.
The same story happens with the second equation. Plug in theta = 0 and it becomes
cos(60) - sin(60) = cos^2(0) + tan(0)
1/2 - sqrt(3)/2 = 1 + 0
-0.37 = 1
which is false.
