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ArbitrLikvidat [17]
3 years ago
13

Simplify the expression!

Mathematics
1 answer:
Lapatulllka [165]3 years ago
8 0

\bf \textit{difference of squares} \\\\ (a-b)(a+b) = a^2-b^2 \\\\[-0.35em] ~\dotfill\\\\ (9+2i)(9-2i)\implies [9^2~-~(2i)^2]\implies [81-(2^2i^2)]\implies [81-\stackrel{i^2 = -1}{(4\cdot -1)}] \\\\\\ 81-(-4)\implies 81+4\implies 85

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45 cars=454

Divide 45 on both sides to get the average length of a single car

1 car = 10.01 ft

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3 years ago
Tim has two spinners , spinnerA and spinner B. Each spinner can only land on red or blue . The probability that spinner A will l
Ganezh [65]

Answer:

52

Step-by-step explanation:

<u>Spinner A</u>

  • Probability of red = 0.5,
  • Probability of blue = 0.5

<u>Spinner B</u>

  • Probability of red = 0.6,
  • Probability of blue = 0.4

<u>Probability of both A and B land on red: </u>

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<u>Number of attempts to get outcome of 84 red on both spinners is:</u>

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<u>Estimated number of both spinners land on blue:</u>

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Step-by-step explanation:

Consider the provided statement.

If we lose electricity, then the data will be lost.

We are need to write the negation of the above statement.

First divide the whole statement in two parts

Let us consider p = We lose electricity and q = The data will be lost.

The symbol use for negation is tilde \sim

\sim(p\rightarrow q)

p\wedge \sim q

Represent T for true and F for False.

The required table is shown below:

p           q           (p\wedge \sim q)

F            F                F

F            T                F

T            F                T

T            T                F

Hence the required table is shown above.

5 0
3 years ago
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