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Mathematics

1 answer:

const2013 [10]3 years ago

8 0

Answer: AB = 30cm, BD = 16cm, CD = 30 cm, AC = 16 cm

Diagram should be the same thing, except doubled the size of the original.

Explanation: Just multiply each side by the scale factor.

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At a competition with 8 runners, 2 medals are awarded for first and second

Dafna1 [17]

Answer: Option 'A' is correct.

Step-by-step explanation :

Since we have given that

Number of medals = 2

Number of runners = 8

We need to find the number of ways to award the medals.

We would use "fundamental theorem of counting" to find the number of ways.

So, number of ways is given by

8 × 7 = 56

Hence, option 'A' is correct.

4 0

3 years ago

Read 2 more answers

Use the identity i2 = -1 to compute the powers of i and complete the table.

mylen [45]

Hint: $\bf \begin{array}{llll}
i^{3}\to & i^2\cdot i^1\\\\

i^{4}\to & i^2\cdot i^2\\\\

i^{5}\to & i^2\cdot i^2\cdot i^1\\\\

i^{6}\to & i^2\cdot i^2\cdot i^2\\\\

i^{7}\to & i^2\cdot i^2\cdot i^2\cdot i^1\\\\

i^{4n}\to & (i^{4})^n\\\\

i^{4n+1}\to & (i^4)^n\cdot i^1\\\\

i^{4n+2}\to & (i^4)^n\cdot i^2\\\\

i^{4n+3}\to & (i^4)^n\cdot i^3
\end{array}$