Need help with function

Answers

Answer 1

Answer: The answer is B, according to the Rules / Laws of Functions.

Answer 2

Answer: B is a function because it is the only one that has 4 different x values, therefore passing the vertical line test.

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A bird catches a fish and flies 100 yards in a straight line at an angle of elevation x degrees from the ground. After flying for 100 yards the bird drops the fish. The fish lands at a spot y yards horizontally from where the bird caught it. What is x?A.)cos -1 y/100

B.)sin -1 y/100

c.)tan -1 y/100

D.)cos -1 100/y

E.)sin -1 100/y

Answers

Answer: Hello there! The correct answer is A.

If the bird flies 100 yards with an angle of elevation of x from the ground, then you could think this as a tringle rectangle, where the hypotenuse is 100 yards, the opposite cathetus is sin(x)*100 and this represents the height at which the bird dropped the fish, not really useful here.

The adjacent cathetus us 100*cos(x), in this case, you are calculating the displacement adjacent to them (because the angle is with respect to the ground) and knowing that the fish lands in a translated y yards horizontally we could write: y = cos(x)*100

now we want to isolate x:

y/100 = cos(x)

arcos(y/100) = arcos(cos(x)) = x

x = arcos(y/100) (or cos-1(y/100) like in the option A)

then, knowing the value of y, we could obtain the angle x with that equation.

The angle of elevation can be solved using B.)sin -1 y/100, which makes use of trigonometric functions.

I don’t know know to do this... Someone please helpI’ve done this with single numbers before, but not with the equations. I’m not sure how to navigate through the problem with all of the equations and numbers....

Answers

Answer:D

Step-by-step explanation:

HELP!! What does this equal??? and what does it mean??? How do you solve it to a normal number?? 1.32601E7

Answers

Answer:

13260100

Step-by-step explanation:

1.32601*E7=

1.32601*10^7

move the decimal 7 units to the left and add zeros into empty spaces to increase the number 1.32601 ten million (10,000,000) times

1.32601*10000000=

13260100

What multiplies to -900 and adds to 0? I think it's 'no solution', but I just want to be sure.

Answers

I don't know ... That's a toughie.

Try +30 and -30 , and let me know what you find.

Each interior angle of a regular n-sided polygon is 150 degrees. How many sides does the polygon have?

Answers

The sum of the interior angles of the polygon = (n - 2) x 180 .

(n - 2) x 180 = (n x 150)

180n - 360 = 150n

Add 360 to each side:

180n = 150n + 360

Subtract 150n from each side:

30n = 360

Divide each side by 30 :

n = 12

Solve the problem
( SHOW your work )

10x – 3 = 8x + 5