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Lelu [443]
3 years ago
10

Which statement is true?

Mathematics
1 answer:
lina2011 [118]3 years ago
4 0

Answer:

Its d

Step-by-step explanation:A probability of 1 indicates an event will definitely happen.

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The angle of elevation of an unfinished tower from a point of 120m away from its base is 25 degrees. How much higher will the to
Sav [38]

Answer:

44.73 m

Step-by-step explanation:

Given that the angle of elevation of an unfinished tower from a point of 120m away from its base is 25 degrees.

Using trigonometry ratio, the height of the tower can be calculated by

Tan Ø = height / base

Tan 25 = height / 120

Make height the subject of formula

Height = 120 × tan 25

Height = 55.96 m

How much higher will the tower need to be raised so that its angle of elevation from the same point will be 40 degrees?

Using the same formula to calculate the new height.

Tan 40 = new height / base

Tan 40 = new height / 120

Make the new height the subject of the formula.

New height = 120 × tan 40

New height = 100.69 m

Increase in height = new height - height

Increase in height = 100.69 - 55.96

Increase in height = 44.73m

Therefore, the tower will need 44.73m to be raised so that its angle of elevation from the same point will be 40 degrees.

4 0
3 years ago
If I have 5 Orange Cats And 14 Black cats How many Cats Will there be left altogether and in colours if 2 Orange Cats get lost a
eimsori [14]

So, we will start by subtracting the orange cats

5-2=3 orange cats left

Then the black cats

14-6=8

Now we will add them back together:

8+3=11 Cats remaining

7 0
3 years ago
Expand (2x-5y)⁷ and find fourth form​
elena55 [62]

Step-by-step explanation:

By binomial theorem,

T(r+1) = nCr * a^(r+1) * b^r

Term 4 = 7C3 * (2x)^4 * (-5y)^3 = 35 * (16x^4) * (-125y^3) = -70000x^4y^3.

3 0
2 years ago
How many grams are equal to 400 kg?
Yuki888 [10]

Step-by-step explanation:

1kg=1000g

400kg=400*1000

=400000

Therefore 400kg =400000g

7 0
2 years ago
Please help me with this answer
olga_2 [115]
73. Area- 55 Perimeter-32


75. Area-30 Perimeter-30
7 0
3 years ago
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