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Dmitriy789 [7]
2 years ago
14

Five years ago mean age of a family was 25 years. What is the present mean age of the family?​

Mathematics
1 answer:
Anit [1.1K]2 years ago
7 0

Answer:

The mean depends on the no. of family members but the question hasn't mentioned it. So I have no idea what to do with this.

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A Basketball Tournament starts with 128 Teams.in each round half of the teams are eliminated How Many teams remain after 5 round
Brrunno [24]

Total number of team in starting = 128 teams.

In each round half of the teams are eliminated.

Therefore, number of teams remain after first round = 128/2 = 64.

The number of teams remain after second round = 64/2 = 32.

The number of teams remain after third round = 32/2 = 16.

The number of teams remain after fourth round = 16/2 = 8.

The number of teams remain after fifth round = 8/2 = 4.

<h3>Therefore, after 5 rounds there remain only 4 teams.</h3>
8 0
3 years ago
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The law of Cosines Is......​
iogann1982 [59]

Answer: \Large\boxed{C.~21}

Step-by-step explanation:

<u>The goal of the question</u>

Find the value of 2abcosC

<u>Given information</u>

a = 4

b = 3

c = 2

<u>Given formula (Law of Cosine)</u>

c^2=a^2+b^2-2abcosC

<u>Substitute values into the formula (Leave 2abcosC as it is)</u>

(2)^2=(4)^2+(3)^2-2abcosC

<u>Simplify the exponents</u>

4=16+9-2abcosC

<u>Simplify by addition</u>

4=25-2abcosC

<u>Add 2abcosC on both sides</u>

4+2abcosC=25-2abcosC+2abcosC

4+2abcosC=25

<u>Subtract 4 on both sides</u>

4 + 2abcosC-4=25-4

\Large\boxed{2abcosC=21}

Hope this helps!! :)

Please let me know if you have any questions

5 0
1 year ago
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A pillow that usually costs $20 is marked down 45%. Table Use the table to find the new price of the pillow. $9 $11 $29 $33
sattari [20]
It would now cost $11. 45% of 20 is 9, therefore, you would subtract 9 from 20 (since it is getting marked down). 
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3 years ago
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Answer:

A) Neither

Step-by-step explanation:

If two lines have same slope then they are parallel lines

If slope of line1* slope of line 2 = -1

The the two lines are perpendicular

In this question slope of line = 2\7

Slope of line 2 = 7\2

8 0
3 years ago
-x + 1/2 = x + 41/2<br> *PLEASE SHOW WORK*
ollegr [7]
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  +x           +x
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6 0
3 years ago
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