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3 years ago

13

The mean age of 5 people in a room is 32 years. A person enters the room. The mean age is now 34. What is the age of the person

who entered the room?

1 answer:

nikdorinn [45]3 years ago

8 0

The age of the person is 36 :) hoped this helped

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The table below shows a students quiz scores on four quizzes the scores are 35,33,28,23. Find the students mean quiz score

katovenus [111]

There are four scores.
So to find the mean or average, you add all four scores and then divide by 4.

I get 119, then divide by 4, to get 29 and 3/4 or 29.75.

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3 years ago

What is the answer too 11 - 18s = - 15?

Arlecino [84]

Answer: s = 1.44

Step-by-step explanation:

11 - 18*s = -15

-18*s = -15 - 11

-18*s = -26

18*s = 26

s = 26/18

s = 13/9

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He has to wait 13 minutes for the 7:18 train

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3 years ago

Need the work for this. 192 is the answer

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y = -3 *4^3

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3 years ago

What is the vertex of the graph of the function below? <br><br>y = x2 + 8x + 12

Vera_Pavlovna [14]

Hello,

$The\,\,formula\,\,for\,\,the\,\,vertex\,\,of\,\,a\,\,quadratic\,\,equation\,\,is: \\ V=( -\frac{b}{2a},f(-\frac{b}{2a}) )$

That means that we must first obtain x, then we replace x in the function to get y, so:

$x=- \frac{b}{2a} \\ \\ x=- \frac{8}{2*(1)} \\ \\ \boxed{x=-4} \\ \\ Reeplacing \,\,x: \\ y=(-4)^{2} +8*(-4)+12 \\ y=16-32+12 \\ \boxed{y=-4}$

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3 years ago