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riadik2000 [5.3K]
3 years ago
14

EASY POINTS PLZ HELP

Mathematics
1 answer:
Grace [21]3 years ago
4 0

Answer:

The age of the person who walked in the room is 44.

Step-by-step explanation:

The original mean age is 38 which means the total ages combined divided by the 5 people.

5 people x 38 (the mean age) = x

x = Total ages combined

x = 190 years old

Then another person came in, now totaling 6 people, and the mean age changed to 39 years old, an increase.

6 people x 39 (the new mean age) = y

y = Total ages combined

y = 234 years old

So, we are trying to figure out the age of the new person who came in. We have to subtract the new total age (y) by the original total age (x).

y - x = Age of new person in room

234 years old - 190 years old =

44 years old

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PLEASE HELP I WILL GIVE BRAINLIEST!!!!
Doss [256]

It would be the 2nd one down and 3rd one up is the correct answer just look a little closer and you will see what i mean there ages are and and they have a 3o sec head start and they ran 60 yards in 30 sec.

6 0
3 years ago
A bank account earns interest at a rate of 3.5% per year (in other words it increases in value by that percent) and starts with
Oduvanchick [21]

Answer:

Annually cumulating interest can be determined by the following formula:

W=P(1+r)^y

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Step-by-step explanation:

7 0
3 years ago
The maximum number of marks attainable at a mathematics competition is 60 suppose you obtained 40 marks your brother obtained 46
mixer [17]

Answer:

You = bronze

Your brother = silver

Your sister = gold

Step-by-step explanation:

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Your brother's marks: 46/60

Your sister's marks: 49/60

You can simplify the fractions, but you don't have to:

40/60 = 2/3

46/60 = 23/30

49/60 = 49/60

Now, divide each of the numerators by the denominators (turn the fraction into a decimal).

2/3 = 0.6667

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49/60 = 0.8166667

(Note that these are all approximations as the real answers go on forever)

Lastly, multiply them all by 100 to get the percent.

0.6667 x 100 = 66.67% - bronze

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0.816667 x 100 = 81.6667% - gold

3 0
2 years ago
Which sentence can represent the inequality 3. 5 x greater-than-or-equal-to 7? The sum of 3. 5 and a number is greater than 7. T
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Step-by-step explanation:

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san4es73 [151]

9514 1404 393

Answer:

  9/16 inch

Step-by-step explanation:

A = 3/4 +1/16

B = 1/4

x = A - B

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x = (12/16 + 1/16) - 4/16 = (13 -4)/16

x = 9/16

The difference between A and B on the ruler is 9/16 inch.

8 0
3 years ago
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