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2 years ago

Solve 4/s=-2/9 please help

Mathematics

2 answers:

Alekssandra [29.7K]2 years ago

7 0

hope it's help you.......

sergeinik [125]2 years ago

4 0

Answer: 4/15

Step-by-step explanation:

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A and B are two events. Which statement about the conditional probability is true?

nata0808 [166]

The answer
by using fundamental definition
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so the only true answer is A, because P(B|A)=P(A) if A and B are independents
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3 years ago

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stira [4]

The air force plane travelled for a total of 6.9 hours.

SOLUTION: 

Given, An Air Force plane left Nairobi and flew west at an average speed of 159 mph. A cargo plane left sometime later flying in the same direction at an average speed of 207 mph. After flying for 5.3 hours the cargo plane caught up with the Air Force plane.

We have to find the number of hours the Air Force plane flew before the cargo plane caught up.

Now, we know that, $\text { distance travelled }=\text { speed } \times \text { time }$

For air force plane $\rightarrow \text { distance travelled }=159 \mathrm{x} \text { time taken by air force plane }$

$\text { For cargo plane } \rightarrow \text { distance travelled }=207 \times 5.3 \text { hours }$

Now, when cargo plane caught the air force plane the distance travelled by the planes will be equal.

So, $159 \times \text { time taken by air force plane }=207 \times 5.3$

$\Rightarrow =\frac{207 \times 5.3}{159}$

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Time taken by air force plane = 6.9 hrs

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3 years ago

What is the reference angle for 7pi/6

DanielleElmas [232]

The reference angle is a positive acute angle. Angle 7π/6 in radians= = 7*180°/6 = 210° ( because π rad=180°).
This angle is in the 3rd Quadrant and formula for the reference angle is:
x-180°.
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2 years ago

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kipiarov [429]

Answer:

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y-1 > 0

Add 1 to each side

y-1 +1> 0+1

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