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3 years ago

2 times the square root of 25 plus the square root of negative 16

Mathematics

2 answers:

aleksklad [387]3 years ago

5 0

Answer:

10+4i

Step-by-step explanation:

2*√25 + √-16.

Given

2*5+4i

Simplify the sqrts. If you are wondering where I got "i" from, "i" is √-1. "i" is short for imaginary number because there is no real number that can be a square root of a negative number. I got the 4 because it is the square root of -16

10+4i

I multiplied the 2 and the 5. This is the simplest form because you cannot add imaginary and real numbers together.

PSYCHO15rus [73]3 years ago

4 0

Answer:

10 + 4 i

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Simplify the following algebraic expression 5x– 4у + 3y+8y – 7х

Margarita [4]

Answer:

Step-by-step explanation:

Given, 

5x– 4у + 3y+8y – 7х

[Bringing like terms together]

= 5x - 7x - 4y + 3y + 8y

[Adding and subtracting the like terms]

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3 years ago

In a pizza takeout restaurant, the following probability distribution was obtained for the number of toppings ordered on a large

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Answer:

The random variable (number of toppings ordered on a large pizza) has a mean of 1.14 and a standard deviation of 1.04.

Step-by-step explanation:

The question is incomplete:

The probability distribution is:

x P(x)

0 0.30

1 0.40

2 0.20

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The mean can be calculated as:

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(pi is the probability of each class, Xi is the number of topping in each class)

The standard deviation is calculated as:

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