Answer:
Explanation:
Find out all of the combos of sums (2,3,5,9,3,4,6,10,4,5,7,11,5,6,8,12)
Then find out how many of these are divisible by 3 (6)
Count how many possibilities there are (24)
6/24=25%
A plane flying at a certain altitude is observed from two points that are 3 miles apart. The angles of elevation made by the two points are 55° and 72°, as seen in the diagram. What is the altitude of the plane to the nearest tenth?
Answer:
8.0 mi
Explanation:
Let's call your triangle ABC as in the diagram. We can use the SAS property of triangles and the Law of Sines.
1. Determine m∠B
m∠ B + 72° = 180°
m∠B = 108°
2. Determine b
By the Law of Sines,
b/sinB = c/sinC
b = c(sinB/sinC)
= 3 × (sin108°/sin17°)
= 3 × 0.951/0.292
= 9.76 mi
3. Calculate the area of ∆ABC
Area = ½ bc sinA = ½ × 9.76 × 3sin55° = ½ × 9.76 × 3 × 0.819 = 12.0 mi²
4. Calculate h
Area = ½ × base × height
12.0 mi² = ½ × 3 mi × h
h = 2 × 12.0 mi/3= 8.0 mi
The altitude of the plane is 8.0 mi.
Answer:8.0miles
Explanation:
You stayed up late to study for an exam and only got a few hours of sleep. List at least three signs of drowsy driving you may experience, and the effect it can have on your morning drive to school.
Answer:
Yawning, blinking frequently, having difficulty remembering the last few miles, and drifting in and out of your lane. It can lead to anything from a ticket to an accident.
Micro-sleep, yawning, and blurry vision are some of the signs of drowsy driving that one may experience.
Driving in a sleep deprived condition can actually lead to anything from a ticket to an accident. In drowsy condition, your response time becomes slower, you find it difficult to focus on your surroundings and easily start drifting in and out of your lane. Amongst all the signs micro-sleep is the most dangerous one as during this time you simply “blackout” and even if it is for couple of seconds, it can have some serious consequences such as unwanted accidents and injuries to oneself and others.
What is it called that looks like a skateboard with a broom handle on it that people use to quickly go from place to place that live work in the city??
Answer:
Scooter? Many people rent from parks to go from places to places
What happens to the enzyme after an enzymatic reaction is complete? A. It loses its hydrogen atoms. B. Nothing happens. C. It gains a water molecule. D. It loses a carbon atom.
Answer:
B. Nothing happens.
Explanation:
Nothing happens to the enzyme after an enzymatic reaction is complete.
Can anyone help me understand number 2
So the question is comparing 2 different scenarios. It also says that both distribution of weights are approximately equal. So now all you have to do, is find in how many standard deviations from the mean does the boys weight lie, 9.1 pounds. Then find the z-score for the value 9.1. Then you're going to have the z-score and mean of the whales. Using that, find the value point for a whale that is approximately that z-score.
So :
(9.1 - 7.36)/0.96 = 1.8125
Then use the z score and mean of the whale in the formula :
(1100 - x)/100 = 1.8125
1100 - x = 181.25
1100-181.25=x
I don't know if its right. but hope it helps