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3 years ago

FD bisects AB FE bisects CB What can you conclude? Reason for conclusion?

Mathematics

1 answer:

valkas [14]3 years ago

3 0

We can't conclude FA=FC.

Let's go with the obvious, AD=BD, BE=CE by the definition of bisector

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If sec theta = - √30 / 3, find cos theta.<br> if sin(-theta) = -0.97, find cos (π/2 - theta).

Cloud [144]

Step-by-step explanation:

$\cos \theta = \frac{1}{ \sec\theta } = - \frac{3}{ \sqrt{30} } = - \frac{3 \sqrt{30} }{30} = - \frac{ \sqrt{30} }{10}$

$\cos( \frac{\pi}{2} - \theta )= \cos \frac{\pi}{2} \cos \theta + \sin \frac{\pi}{2} \sin \theta$

Note that

$\sin( - \theta) = - \sin \theta$

$\cos \frac{\pi}{2} = 0 \: \: \: \: \: \sin \frac{\pi}{2} = 1$

Therefore,

$\cos( \frac{\pi}{2} - \theta ) = 0.97$

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3 years ago

How to find a unit rate 305 rotation in 5 minutes

wariber [46]

A unit rate will always end up having one as its denominator so divide 305 by 5 which is 61 rotations/1 minute.

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3 years ago

Find the value of x in the triangle shown

nevsk [136]

Answer:

the answer is A the square root of 80.

Step-by-step explanation:

8 0

3 years ago

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Graph the circle x2 + y2 + 10x + 6y + 18 = 0.

Minchanka [31]

Answer:

see below for a graph

Step-by-step explanation:

Completing the square for x and y terms can help you put this in the standard form.

(x^2 +10x) +(y^2 +6y) = -18

(x^2 +10x +25) +(y^2 +6x +9) = -18 +25 +9 . . . . add square of half linear coefficient

(x +5)^2 +(y +3)^2 = 16 . . . . . . . circle centered at (-5, -3) with radius 4

7 0

3 years ago

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Given f(x) = 18x + 8, find x when f(x)= 14.

Naddika [18.5K]

The answer is 0.3 (1/3.)

Proof?

f(0.3) = 18(0.3) + 8

f(0.3) = 6 + 8

f(0.3) = 14

14 = 14

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8 0

2 years ago