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2 years ago

Square root of negitive 124

Mathematics

2 answers:

yan [13]2 years ago

8 0

square roots of a negative number will be imaginary number "i"

Musya8 [376]2 years ago

4 0

square roots of a negative number will be imaginary number "i"

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MARKING AS BRAINLIEST! LAST ATTEMPT! ) show ur work

Ivenika [448]

$- 3 \sqrt{180 {x}^{5}y } = - 3 \sqrt{36 {x}^{4} \times 5xy } = - 18 {x}^{2} \sqrt{5xy}$

$5 \sqrt{108xy {z}^{2} } = 5 \sqrt{36 {z}^{2} \times 3xy } = 30z \sqrt{3xy}$

$3x \sqrt{x {y}^{10} {z}^{7} } = 3x \sqrt{ {y}^{10} {z}^{6} \times xz } = 3x {y}^{5} {z}^{3} \sqrt{xz}$

$\sqrt{ {x}^{3} } = \sqrt{ {x}^{2} \times x } = x \sqrt{x}$

$\sqrt{x {y}^{3}z } = y \sqrt{xyz}$

$\sqrt{18 {x}^{2}y } = \sqrt{9 {x}^{2} \times 2y } = 3x \sqrt{2y}$

$\sqrt{32 {x}^{4} {y}^{2} } = \sqrt{16 ({ {x}^{2} })^{2} {y}^{2} \times 2 } = 4 {x}^{2} y \sqrt{2}$

$2 \sqrt{16 {x}^{7} {y}^{3} {z}^{4} } = 2 \sqrt{ {4}^{2} {x}^{6} {y}^{2} ( { {z}^{2} )}^{2} \times xy } = 8 {x}^{3} y {z}^{2} \sqrt{xy}$

${x}^{2} \sqrt{ {x}^{3} {y}^{2} } = {x}^{2} \sqrt{ {x}^{2} {y}^{2} \times x } = {x}^{3} y \sqrt{x}$

Answer: ......

Ok done. Thank to me :>

5 0

2 years ago

When 12 is subtracted from 3 times the number the result is 24 what's the number

prohojiy [21]

$x-\ number\\\\
\frac{12}{3x}=24\ \ \ \ | multiply\ by\ 3x\\\\
12=24*3x\\\\
12=72x\ \ \ \ | divide\ by\ 12\\\\
x=6\\\\Number\ is\ 6.$

3 0

2 years ago

Tom has 8 toys each toy weighs either 20 grams or 40 grams or 50 grams he has a diffrent number of toys (at least one) of each w

liberstina [14]

Answer:

110

Step-by-step explanation:

He said he had atleast 1 of each. Hope it helps.

7 0

3 years ago

Read 2 more answers

Consider a game in which players roll a number cube to determine the number of points earned. If a player rolls a prime number,

Aleksandr-060686 [28]

Answer:

The expected value of the points earned on a single roll in this game is $\dfrac{1}{6} = 0.1667$ .

Step-by-step explanation:

We are given that consider a game in which players roll a number cube to determine the number of points earned. If a player rolls a prime number, that many points will be added to the player’s total. Any other roll will be deducted from the player’s total.

Assuming that the numbered cube is a dice with numbers (1, 2, 3, 4, 5, and 6).

Here, the prime numbers are = 1, 2, 3 and 5

Numbers which are not prime = 4 and 6

This means that if the dice got the number 1, 2, 3 or 5, then that many points will be added to the player’s total and if the dice got the number 4 or 6, then that many points will get deducted from the player’s total.

Here, we have to make a probability distribution to find the expected value of the points earned on a single roll in this game.

Note that the probability of getting any of the specific number on the dice is $\dfrac{1}{6}$ .

Numbers on the dice (X) P(X)

+1 $\frac{1}{6}$

+2 $\frac{1}{6}$

+3 $\frac{1}{6}$

-4 $\frac{1}{6}$

+5 $\frac{1}{6}$

-6 $\frac{1}{6}$

Here (+) sign represent the addition in the player's total and (-) sign represents the deduction in the player's total.

Now, the expected value of X, E(X) = $\sum X \times P(X)$

= $(+1) \times \frac{1}{6} +(+2) \times \frac{1}{6} +(+3) \times \frac{1}{6} +(-4) \times \frac{1}{6} +(+5) \times \frac{1}{6} +(-6) \times \frac{1}{6}$

= $\frac{1}{6} + \frac{2}{6} + \frac{3}{6} - \frac{4}{6} + \frac{5}{6} - \frac{6}{6}$

= $\frac{1+2+3-4+5-6}{6}$

= $\frac{11-10}{6}= \frac{1}{6}$

Hence, the expected value of the points earned on a single roll in this game is $\frac{1}{6} = 0.1667$ .

4 0

3 years ago

3x + 8 = -x + 20 What is x?

g100num [7]

First, lets take all the x values on one side.

3x + x + 8 = -x + x + 20
4x + 8 = 20

Now, lets put the numbers on the other side.

4x + 8 - 8 = 20 - 8
4x = 12
x = 3

Hope this helps!

5 0

3 years ago

Read 2 more answers