3 years ago

Compute |2+8i|. Need help

Mathematics

1 answer:

EastWind [94]3 years ago

5 0

Answer:

Step-by-step explanation:

|2+8i|=√(2²+8²)=√(4+64)=√68=2√17

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Find the derivative of f(x) = negative 10 divided by x at x = -12.

KiRa [710]

$f(x)=\dfrac{10}{x};\ D:x\neq0\\\\f'(x)=-\dfrac{10}{x^2}\\\\x=-12\to f'(-12)=\dfrac{-10}{(-12)^2}=\dfrac{-10}{144}=-\dfrac{5}{72}$

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3 years ago

16 teams In a football league, each team plays each other twice , how many games are there in the football league in total ?

Brilliant_brown [7]

Answer:

120 games.

Step-by-step explanation:

We have been given that there are 16 teams in a football league. Each team plays each other twice. We are asked to find total number of games are there in the football league.

We will use formula $\frac{n(n-1)}{2}$ to solve our given problem.

Each team will play matches with one team less as it will not play match with itself.

We will divide all number of matches by 2 to avoid repetition.

$\frac{16(16-1)}{2}=\frac{16(15)}{2}=8*15=120$

Therefore, there are 120 games in the football league.

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3 years ago

Solve the inequality 4x - 7<5

Alexandra [31]

Answer:

x ∈ (-oo ; 3)

Step-by-step explanation:

4x - 7 < 5

4x < 5 + 7

4x < 12

x < 12 : 4

x < 3

x ∈ (-oo ; 3)

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3 years ago

What number is 12% of 315

goldenfox [79]

Answer:

12% of 315 is 37.8 :) Tag me if I'm wrong

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2 years ago

Read 2 more answers

16+5×4÷2=42 <br><br>insert parentheses to make the statement true

Nat2105 [25]

(16+5)4÷2=42
21×4÷2=42
84÷2=42
42=42
that is were to but you answer

5 0

3 years ago