Answer:
1) Step 3
2) C.
Step-by-step explanation:
1) We can see that in step 2, Munro wrote -3(2y+13)-5y= -6. This is correct. Let's look at step 3. Munro distributes the -3 to 2y and 13. We can see that Munro distributed the -3 wrongly with 13. -3y*13 is -39y, not 39y. He got the sign wrong!
Answer:
Question 1's answer is 75 mph
Question 2's answer is 30 minutes
Step-by-step explanation:
The height of the tree is 9 meters
<h3>What is angle of elevation?</h3>
This is the angle the line of sight makes with the horizontal.
Analysis:
The line of sight , the shadow length and height of tree form right angled triangle.
Let the height of tree be h
so that, tan 24 = h/20
h = 20 tan 24
h = 20(0.445) = 8.9m = 9m
In conclusion, the height of the tree is 9m.
Learn more about angle of elevation: brainly.com/question/88158
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