3908i is a pure imaginary number. So option B is coorect
<u>Solution:</u>
Given that, a number is 3908i
We have to find the type of number which it belongs to from the given set of options
If we observe the number clearly, we can see the “i” behind the number 3908, where “i” value is square root of ( - 1 ).
We know that, “i” is not real, so 3908i is also not real.
And it has other operation like a + bi or a – bi
So, it is just imaginary number but not a complex number.
Hence, the given number is pure imaginary number. So option b is correct.
Answer:
<em>=84</em>
Step-by-step explanation:
If we have n types of elements and we have to choose r elements from then, then we have C(n+r-1, r) r-combinations.
To choose 6 different candles,
n=4(4 types of candles), r=6(no of candles to pick)
=C(4+6-1,6)
=C(9,6)
= 9! / (9-6)! (6!)
= 9!/ 6! 3!
=84
Assume uniformly accelerated motion
Vf = Vo - at => a= [Vo - Vf] / t
Vf = 0, t = 20 s => a = Vo / 20
x = Vot - at^2 / 2
x = Vot - (Vo / 20) * t^2 /2
x = 1775 feet * [1 mile / 5280 feet] = 0.336 mile
t = 20 s
=> 0.336 = 20Vo - Vo(20)^2 /(40) = 20Vo - 10 Vo = 10 Vo
=> Vo = 0.336 /10 = 0.0336 mile /s
Vo = 0.0336 mile/s * 3600 s/h = 120.96 mile / h
Therefore, the car was way over the speed limit.
Answer:
126 miles per hour
Step-by-step explanation:
We can draw a triangle and we can use trigonometry to write:
Where a is the distance plane flew in 1 minute
Since, 11,106.13 FEET in 1 MINUTE, to get in hours, we multiply by 60:
11,106.13 * 60 = 66,367.51 feet per hour
Now, to get in miles per hour, we divide by 5280 [5280 feet = 1 mi]
66,367.51 / 5280 = 126.21 miles per hour
To the nearest mph, it would be 126 miles per hour
Do 0.45x2=0.90 and then do 0.90+0.45=1.35
Answer:1.35