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Dahasolnce [82]
3 years ago
11

4 01 8

Mathematics
2 answers:
Free_Kalibri [48]3 years ago
4 0

Answer:

31

Step-by-step explanation:

6×23=138 this will be the total ages for the six people

22+21+23+24+17=107 total ages for the five people

138-107=31

31 is the age of the person who entered the room

Rashid [163]3 years ago
3 0

Answer:

13 years

Step-by-step explanation:

17 + 15 + 23 + 23 + 23 =101 / 5 = 20.2

Mean before was 20.2

In order for the mean to be 19, all those numbers would have to add up 114 to be divided by 6 and have a mean of 19

114 / 6 = 19

114-101 = 13 is that number

17 + 15 + 23 + 23 + 23 + 13 = 114 / 6 = 19

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PLEASE I NEED HELP!!!!!!!!
Yanka [14]

Answer:

1) x= 3i, x= - 3i

2) x= +i\sqrt{7}, x = - i

Step-by-step explanation:

1) x^2+9=0

(x+3i)(x-3i)=0

x= 3i, x=-3i

2) x^2-4=-11

x^2=-7

x= ±i\sqrt{7}

x= +i\sqrt{7}, x = - i

hope this helps!! :))

7 0
2 years ago
You and five of your friends like to go to McDonalds once a week and get Happy Meals for the prize inside. McDonalds has just st
Pavel [41]

Answer:

The most suitable experimental simulation to find the probability of getting the six toys is by rolling the dice and recording the occurrences.

Step-by-step explanation:

As there are a total of 6 different dinosaurs, the probability of each of them is given as

P(X=one dinosaur)=1/6

In order to design an experiment, as the data is completely random and unknown, thus the experiment is designed such that the probability of individual option is 1/6.

In this regard the most suitable option is rolling a dice, numerous times and recording the occurrences accordingly.

8 0
3 years ago
Simplify 4x^6/2x^4 step by step <br><br> please<br><br> thanks
mrs_skeptik [129]
Ok so you have 4, x^6 / 2, x^4. Now divide the coefficient so 4/2=2. So 2 x^6/x^4, now subtract the numerator by the denominator so x^6-x^4=x^2 so now you have 2x^2

Answer: 2x^2
5 0
3 years ago
50 ÷ 4 = n.
jeka94

Answer:

12 r2

Step-by-step explanation:

50 divided by 4 equals that lol

5 0
3 years ago
How do you solve 8-(4x+7)=5x+30-2?
Cerrena [4.2K]
8-4x-7=5x+30-2
combine like terms
1-4x=5x+28
-27=9x
divide both sides by nine
-3=x
6 0
3 years ago
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