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Travka [436]
3 years ago
8

Please help me! Don't understand.

Mathematics
1 answer:
FromTheMoon [43]3 years ago
7 0
The new area would be 270
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Find the area of the triangle.
nalin [4]
I believe it is 8x.

Use the formula A=1/2(b*h)

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A=1/2(20x-4x)
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3 years ago
A tangent from point P to a circle of radius 4 cm is 10 cm long. Find: <br>a the distance of P from the centre of the circle <br
d1i1m1o1n [39]

Answer:

see explanation

Step-by-step explanation:

a

The tangent and the radius at the point of contact form a right angle

Using Pythagoras' identity on the right triangle formed.

Let x be the distance from the centre to P, then

x² = 4² + 10² = 16 + 100 = 116 ( take the square root of both sides )

x = \sqrt{116} ≈ 10.77 cm (to 2 dec. places )

b

let the required angle be Θ, then

Using the sine or cosine ratio in the right triangle.

cosΘ = \frac{adjacent}{hypotenuse} = \frac{10}{\sqrt{116} }

Θ = cos^{-1} ( \frac{10}{\sqrt{116} } ) ≈ 21.8°

7 0
3 years ago
Which of the following shows the solution of 7x – 5 &gt; 16?
vladimir2022 [97]

Answer:

x<3

Step-by-step explanation:

add 5 to 16. then divide 7 from 21. the sign flips with inequalities involving multiplication and/or division

7 0
3 years ago
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SashulF [63]
This will be 2400 cause there is nothing in the ones place
3 0
3 years ago
Ia-5I=5-a lojubnbobihbihbjhbjhbjhbbjhbjhbjhjvhhbkjk
Anna35 [415]

Answer:

tha

Step-by-step explanation:

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