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3 years ago

I am confused on what the reasons are.

Mathematics

1 answer:

Burka [1]3 years ago

8 0

Answer:

1) Angle AOC + Angle COB = Angle AOB

Angle AOC = X

Angle COB = Y

putting in equation, we get

X + Y = AOB

2) Angle X + Y = AOB (proved above)

AOB = 90° ( given)

Angle X + Angle y = 90°

Angle X is the complement of Y

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3 years ago

Read 2 more answers

Given f(x)=x^2+5 and g(x)=2x^3-1 find (f/g)(-3)

AlekseyPX

For this case we have the following functions:

$f (x) = x ^ 2 + 5\\g (x) = 2x ^ 3-1$

By definition of composition of functions we have:

$(f / g) (x) = \frac {f (x)} {g (x)}$

Then substituting:

$f (-3) = (- 3) ^ 2 + 5 = 9 + 5 = 14\\g (-3) = 2 (-3) ^ 3-1 = 2 (-27) -1 = -54-1 = -55$

So:

$(f / g) (- 3) = \frac {14} {- 55} = - 0.25$

Answer:

$(f / g) (- 3) = \frac {14} {- 55} = - 0.25$

7 0

3 years ago

The school that Michael goes to is selling tickets to a dance. On the first day of ticket sales the school sold 3 staff tickets

Minchanka [31]

The price of a staff ticket and the price of a student ticket is $8 and $14

Given:

Day 1:

Number of staff tickets sold = 3

Number of students tickets sold = 1

Total revenue day 1 = $38

Day 2:

Number of staff tickets sold = 3

Number of students tickets sold = 2

Total revenue day 2 = $52

let

cost of staff tickets = x

cost of students tickets = y

The equation:

3x + y = 38 (1)

3x + y = 38 (1)3x + 2y = 52 (2)

subtract (1) from (2)

2y - y = 52 - 38

y = 14

substitute y = 14 into (1)

3x + y = 38 (1)

3x + 14 = 38

3x = 38 - 14

3x = 24

x = 24/3

x = 8

Therefore,

cost of staff tickets = x

= $8

cost of students tickets = y

= $14

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3 years ago

Find the solution set of the system of linear equations represented by the augmented matrix. (if there is no solution, enter no

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There is no system to solve for

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3 years ago

I am confused on what the reasons are.​

I am confused on what the reasons are.