Solving the missing side. Find the missing side. Round to the nearest tenth. Please show your work. Part 3. #9-10
1 answer:
Answer:
9. 16.6 units
10. 18.1 units
Step-by-step explanation:
9. We are given the opposite and adjacent sides of the angle 38 degrees, so we want to use tangent, which is opposite / adjacent:
≈ 16.6 units
10. We are given the adjacent and hypotenuse sides of the angle 25 degrees, so we want to use cosine, which is adjacent / hypotenuse:
≈ 18.1 units
Hope this helps!
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Answer:
The time taken for the flare to hit the ground is approximately 10.7 seconds.
Step-by-step explanation:
Given : Suppose a flare is shot from the top of a 120 foot building at a speed of 160 feet per second. The equation models the h height at t seconds of the flare.
To find : How long will it take for the flare to hit the ground?
Solution :
The equation models the h height at t seconds of the flare.
The flare to hit the ground when h=0.
Substitute in the equation,
Applying quadratic formula,
Where, a=-16, b=160 and c=120
Reject the negative value.
Therefore, the time taken for the flare to hit the ground is approximately 10.7 seconds.
There are several ways such as
255
/ 7
First put it in the decimal equation
Since there is a decimal in the number being divided(255.5), you move the decimal so that it is a whole number(2555) but since you move the decimal place once, you do the same to the 7 so that it is now 70. So now it's 2555/70 which looks like 365 but then, you have to place the decimal value so that it is now 36.5
This is what you use to divide as shown.
255
First put it in the decimal equation
Since there is a decimal in the number being divided(255.5), you move the decimal so that it is a whole number(2555) but since you move the decimal place once, you do the same to the 7 so that it is now 70. So now it's 2555/70 which looks like 365 but then, you have to place the decimal value so that it is now 36.5
This is what you use to divide as shown.