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Firdavs [7]
3 years ago
9

What is the sum of square root of -2 and square root of -18

Mathematics
1 answer:
Tasya [4]3 years ago
7 0
Answer is B
4 square root of 2i

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Help need it…please I need it now
tino4ka555 [31]

Answer:

Here is the solution . see the attached file

4 0
2 years ago
if you stop at random in front of an animal exhibit,What is the probability that you will be looking at monkeys? I put the table
Mkey [24]

Answer:

1/10

step-by-step explanation:

----------------------------------

| animals | percent of animals |

----------------------------------

|    goats    |          16%           |

----------------------------------

|    camels    |          4%           |

----------------------------------

|    giraffes    |          6%            |

----------------------------------

|    llamas    |          6%           |

----------------------------------

|   deer    |          1%           |

----------------------------------

|   monkeys    |          10%           |

----------------------------------

|   birds    |          27%           |

----------------------------------

|   reptiles    |          14%           |

----------------------------------

|   bears    |          16%           |

----------------------------------

( sorry if the table above isnt 100% right or straight ^ )

first you add up all the percents of how much animals are in this exhibit

16 + 4 + 6 + 6 + 1 + 10 + 27 + 14 + 16

= 100 %

then since we are looking for the probability of stopping in front of the monkeys, we take that 100 we got earlier and get the 10% of monkeys from our table

10/100

but since there isnt a 10/100 on the answers we look for something that equals to 10/100 and 1/10 does since you can just times both the 1 and 10 to equal the 10 and 100 you were looking for

1/10

making 1/10 your answer!

hope this helps! and if you need anymore help on this math question just ask me :)

4 0
2 years ago
if traveled a distance of 643 feet how many kilometers did the ball travel? round to the nearest hundredth?
Makovka662 [10]
0.20km is the answer. 

Explanation: 1ft = 30.48cm
6 0
4 years ago
If a jacket was purchased at £75 and had 20% off, what would the price be?
IceJOKER [234]
20% of 75 = 15

75 - 15 = £60

It should be c) £60
8 0
3 years ago
1. Suppose you have a fair 6-sided die with the numbers 1 through 6 on the sides and a fair 5-sided die with the numbers 1 throu
Vedmedyk [2.9K]

Answer:

a. 0.5 or 50%

b. 5 rolls.

Step-by-step explanation:

a. There are 30 possible outcomes for this experiment, the sample space for the outcomes in which the six-sided die produces a value larger than the roll of the five-sided die is:

S={6,1; 6,2; 6,3; 6,4; 6,5; 5,1; 5,2; 5,3; 5,4; 4,1; 4,2; 4,3; 3,2; 3,1; 2,1}

There are five outcomes when rolling a 6, four when rolling a 5, three when rolling a 4, two when rolling a 3 and one when rolling a two.

The probability is:

P = \frac{5+4+3+2+1}{5*6}=0.5

b. The probability of rolling a 3 on the five-sided die is 1 in 5 or 0.20. The expected number of rolls until a fair five-sided die rolls a 3 is:

E(x=1) = \frac{1}{p(x)}=\frac{1}{0.2}= 5\ rolls

7 0
3 years ago
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