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statuscvo [17]
2 years ago
14

Answer this qn sm1 Also, can others check on my latest 2 qns?

Mathematics
2 answers:
Lemur [1.5K]2 years ago
8 0

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

lakkis [162]2 years ago
8 0

Answer:

Check the attachment.

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You are walking along a path y= 2x + 12 and your
UNO [17]

Answer:

(-1,10)

Step-by-step explanation:

At the point when the paths cross, the respective x and y values of each equation will be equal.

Your path is y=2x+12, and your friends path is 4x+y=6. Sub 2x+12 in for y (from your path's equation) into your friends equation to find the value of x:

4x+2x+12=6

6x=-6

x=-1

y=2x+12

y=2(-1)+12=10

So you will cross paths at (-1,10)

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3 years ago
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Step-by-step explanation:

5 0
3 years ago
The sum of the measures of two angles is 107.3º. One angle has a measure of 51º. What is the measure of the second angle?
babunello [35]

Answer:

56.3°

Step-by-step explanation:

If the total is 107.3° just subtract 51° to get 56.3°

3 0
3 years ago
5x2 – 15x – 20. factorise
hoa [83]

Answer:

5(x−1)(x+4)? i think

Step-by-step explanation:

7 0
3 years ago
PLEASE HELP ASAP ): 25 PTS + BRAINLIEST TO RIGHT/BEST ANSWER
eimsori [14]

Answer:

  c.  25

Step-by-step explanation:

(f ∘ g)(-2) = f(g(-2)) = f(-2-3) = (-5)² = 25

For this problem, it seems to work best to evaluate g(-2), then evaluate function f on that. (In other cases, it might be useful to simplify the composite function first.)

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