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4 years ago

11

How do I work out "The beam from a lighthouse reaches a distance of 8 kilometers and spreads to an angle of 35 degrees. Calculat

e the area covered by the beam from the lighthouse."

1 answer:

kifflom [539]4 years ago

3 0

The whole circle has 360 degrees

You just need to count the area of circle with radius of 8 km and then multiple it by the fraction 35 over 360.

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Plz help answering any of this!!! (If you can)

forsale [732]

1) 15.5 - 6 = 9.5
therefore, the birds new location is 9.6 feet above the ground.
2)2.25 - 1.50 = 0.75
she owes her grandfather $0.75
3) 4.2 - 1.6= 2.6

5 0

4 years ago

Derive a formula to find the perimeter of an isosceles triangle in which one of the equal

Scorpion4ik [409]

Given :

Length of one of the equal sides of an isosceles triangle = 3x+2

Then, length of the other equal side will also be = 3x+2

Length of the unequal side of this isosceles triangle = 14

Formula for finding the perimeter of an isosceles triangle :

$= \tt side + side + side$

A formula for finding the perimeter of this isosceles triangle :

$= \tt3x + 2 + 3x + 2 + 14$

Bringing all like terms together we get :

$=\tt 3x + 3x + 2 + 2 + 14$

$= \tt6x + 4 + 14$

$\color{plum}\tt = 6x + 18$

Thus, the formula = 6x+18

Therefore, a formula to find the perimeter of this isosceles triangle = <u>6x+18</u>

7 0

3 years ago

Write in surd form<br><img src="https://tex.z-dn.net/?f=%20%7B13%7D%5E%7B%5Cfrac%7B5%7D%7B2%7D%20%7D%20" id="TexFormula1" title=

Airida [17]

Answer:

sqrt(13^2)

Step-by-step explanation:

this is the radical form of 13^(5/2)

6 0

3 years ago

Read 2 more answers

Please help giving brainlist, the answers i put arent the correct ones i just misclicked.

QveST [7]

1. B 2. A 3. B that’s what you looking for

6 0

3 years ago

∠A and ∠B are vertical angles with m∠A=x and m∠B=3x−60 . What is m∠A ?

kow [346]

Answer:

m∠A=30°

Step-by-step explanation:

we know that

<u><em>Vertical Angles</em></u> are the angles opposite each other when two lines cross.

Vertical angles always are congruent

In this problem

m∠A=m∠B ----> by vertical angles

we have

m∠A=x

m∠B=3x-60

substitute

$3x-60=x$

Solve for x

$3x-x=60$

$2x=60$

$x=30$

therefore

m∠A=30°

7 0

4 years ago