Answer:
5. Should be B
6. Should be A
I am not totally sure but please i havent learned this in a long time
The horizontal and the vertical components of the vector are -8.86 and -1.566 respectively.
<h3>What is a vector?</h3>
A vector is a quantity that has both magnitude and direction.
To calculate the horizontal components of the vector, we use the formula below.
Formula:
- Vx = Vcos∅............ Equation 1
Given:
Substitute into equation 1
- Vx = 9cos190°
- Vx = 9×(-0.9848)
- Vx = -8.86
Also, to find the vertical component of the vector, we use the formula below
- Vy = Vsin∅............. Equation 2
Also, substitute these values above into equation 2
- Vy = 9sin190°
- Vy = 9×(-0.174)
- Vy = -1.566
Hence, the horizontal and the vertical components of the vector are -8.86 and -1.566 respectively.
Learn more about vectors here: brainly.com/question/25705666
#SPJ1
B would be the correct answer
I think it’s either the first or second
Answer:
interval in minutes = (24.88, 35.12)
Step-by-step explanation:
we can use the following formula:
interval = population mean ± (z · σ)
- population mean = 30 minutes
- z for 80% = 1.28
- σ = 4 minutes
interval = 30 minutes ± (1.28 · 4 minutes)
interval in minutes = (30 - 5.12), (30 + 5.12) = (24.88, 35.12)