You have to use this equation the a=5, h=4 and b=9 and you should get the answer of 28
Answer:
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Step-by-step explanation:
What is “D”
So first what you would have to do is basically look for key words and important words such as 35, 4, and 3, and 1 and this is very important because we will be using some of these variables. So first you would have to add 4+3 because it says that four shelves have the same amount as one shelf and so add that and you would get 7 and then divide that by 35 because they want to know how much is on the equal shelves which is four shelves and so your final answer would be 5 as your final answer. So thank you for this question and keep in mind that the more you read carefully, the more you'll understand the question and will be able to figure out the answer. May God bless you and have a blessed day and again thank you for this question.
Answers:
- rate of the plane in still air = 770 km per hour
- rate of the wind = 130 km per hour
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Explanation:
p = speed of the plane in still air (i.e. without any wind)
w = speed of the wind
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If the plane flies against the wind, then it slows down from p to p-w
distance = rate*time
3200 = (p-w)*5
3200/5 = p-w
p-w = 640
p = 640+w
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If the plane flies with the wind, then it gets a speed boost going from p to p+w
distance = rate*time
6300 = (p+w)*7
6300/7 = p+w
900 = p+w
Now plug in p = 640+w and solve for w
900 = p+w
900 = 640+w+w
900 = 640+2w
2w+640 = 900
2w = 900-640
2w = 260
w = 260/2
w = 130
The wind is moving at a speed of 130 km per hour
p = 640+w = 640+130 = 770
The plane moves at a speed of 770 km per hour if there isn't any wind.
Answer: C is your answer.
Step-by-step explanation: