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gulaghasi [49]
3 years ago
14

Help with this I don't know how to solve

Mathematics
1 answer:
Gnesinka [82]3 years ago
4 0

Answer:

The right answer is the first option, tg= \frac{\sqrt{105}}{4}

Step-by-step explanation:

The tg is the ratio of the opposite cathet to the adjacent cathet .

Here b is the opposite cathet, с is the hypotenuse and b is an adjacent cathet.

tg = \frac{b}{a}

Let's find b.

c^2=a^2+b^2\\ b^2=c^2-a^2\\ b^2=22^2-8^2\\ b^2=484-64\\ b^2=420\\ b=\sqrt{420} = \sqrt{2*21*2*5} = 2\sqrt{105}

Now let's find tgθ.

tg = \frac{b}{a} \\ tg =  \frac{2\sqrt{105}}{8} \\ tg=\frac{\sqrt{105}}{4}

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Note: Enter your answer and show all the steps that you use to solve this problem in the space provided.
kow [346]

Answer:

616 cm²

Step-by-step explanation:

To find the area of a circle you use the formula A = π · r²

So we know that the diameter is 28 cm, to find the radius we would divide this in half, because d = 2r, giving us 14. Now we can do 14² which is 196, and then times that by pi or in this case 22/7.

196 × (22/7) = 616

3 0
3 years ago
Read 2 more answers
The following table shows the length and width of two rectangles:
faltersainse [42]
The perimeter of these can be found by adding length and width and then multiplying by two. 

Rectangle A: (with all of the variables already doubled)
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Rectangle B: (Still with all the variables already doubled)
8x + 10 + 6x - 4
8x + 6x + 10 - 4
14x + 6
So rectangle B's perimeter is 14x + 6

And now to subtract the two.
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14x + 6 - 4x - 14
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5 0
3 years ago
If G is the midpoint of FH, FG= 14x + 25 and GH = 73- 2x, find FH
Alenkinab [10]
Given that G is the midpoint of FH, then:
FG=GH
hence;
14x+25=73-2x
solving for x we get:
14x+2x=73-25
16x=48
x=48/16
x=3
therefore the length FG=14x+25 will be:
14*3+25
=67
hence FH will be:
FH=67*2=134
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3 years ago
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8 0
3 years ago
10. The community garden has 4
Lyrx [107]

Answer:

12

Step-by-step explanation:

In four acres there are 3 gardens so you just have to multiply 4x3=12

3 0
2 years ago
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