Answer:
A person standing on the bank of the river observes that the angle of elevation of the top of a tree standing on the opposite bank is 60
∘
.When he was 40m away from the bank he finds that the angle of elevation to be 30
∘
.Find
(i) the height of the tree.
(ii)the width of the river,correct to 2d.p
Answer:
Triangle ABC is not a Right Triangle
Step-by-step explanation:
The perimeter of a triangle is all of the sides added together so we can model our equation like so:
AB + BC + CA = P
or
8 + 5 + CA = 22
We first combine like terms
13 + CA = 22
Then make the variable have no numbers on its side
13 + CA = 22
-13 -13
CA = 9
So now that we know what CA is, we can determine whether or not its a right triangle
We can use the Pythagorean Theorem for this:
a^2 + b^2 = c^2 (the '^' symbol means 'to the power of')
or
5^2 + 8^2 = 9^2
Now we Solve
5^2 = 25
8^2 = 64
9^2 = 81
25 + 64 =? 81
89 does not equal 81
So Triangle ABC is not a Right Triangle
Store B has the lowest price.
Store A
2lb = $8.44
1lb = $4.22
0.5lb = $2.11
(1lb + 0.5lb) 4.22 + 2.11 = 6.33
1.5lb = $6.33
Store B
1.5lb = $5.85
Answer:
80 minutes.
Step-by-step explanation:
If you look at the graph, every 50 square feet, the time goes up 20 mins.
So if 150 were to become 200, then 60 would become 80.
It’s D because if he withdrawals u would minus
