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2 years ago

Function or not x y 12 7 3 -2 -2 3 9 8 -12 12

Mathematics

1 answer:

Papessa [141]2 years ago

3 0

Answer:

function

Step-by-step explanation:

x coordinates don't repeat

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Cos^2(2theta)+ 2cos(2theta)+1=0

Tema [17]

Answer:

θ = π n + π/2 for n element Z

Step-by-step explanation:

Solve for θ:

1 + 2 cos(2 θ) + cos^2(2 θ) = 0

Write the left hand side as a square:

(cos(2 θ) + 1)^2 = 0

Take the square root of both sides:

cos(2 θ) + 1 = 0

Subtract 1 from both sides:

cos(2 θ) = -1

Take the inverse cosine of both sides:

2 θ = 2 π n + π for n element Z

Divide both sides by 2:

Answer: θ = π n + π/2 for n element Z

4 0

3 years ago

13+5-7 is what percent

ANEK [815]

"Addition, Subtraction,
Which ever comes first!" ~ my teacher

13+5-7
^
18-7
^
11%

^
11%

7 0

3 years ago

How do I do this?<br> Thank you!

saveliy_v [14]

Can you post a more clear picture

6 0

4 years ago

Read 2 more answers

The high school soccer team can have no more than 27 players. Solve an inequality to determine how many players can make the tea

Dvinal [7]

Answer:

The answer is $x\leq 9.$

Step-by-step explanation:

Now, to find the number of players to make the team by solving an inequality.

Let the number of players that can make team be $x.$

Total number of players high school soccer team can have = 27.

Already players chosen by coach = $18$ .

According to question:

$x+18\leq 27$

<em>Subtracting both sides by 18 we get:</em>

$x\leq 9.$

Therefore, the answer is $x\leq 9.$

6 0

3 years ago

Ik this is the easiest question but who wanna do it for me?:(

sladkih [1.3K]

Answer:

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers