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Lisa [10]
3 years ago
8

The mean age of 5 people in a room is 40 years. A person enters the room. The mean age is now 39. What is the age of the person

who entered the room?
Mathematics
1 answer:
IrinaVladis [17]3 years ago
6 0

Answer:

10 years old :)

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F(x) = (x + 1)(x - 3)(x - 4)
Vladimir [108]

Answer:

f(x)  x^3 - 2x^2 + 5x + 12

Step-by-step explanation:

Next time please share the goal.  I'm guessing your intent was to multiply out the given function.

f(x) = (x^2 + x - 3x - 3)(x - 4), or

      = (x^2 - 2x - 3)(x - 4)

Now apply the distributive property of multiplication:

f(x) = x^3 - 4x^2 - 2x^2 + 8x - 3x + 12, or

      = x^3 - x^2(4 - 2) + x(5) + 12, or

f(x)  x^3 - 2x^2 + 5x + 12

6 0
4 years ago
Read 2 more answers
On Friday Colby woke up and took 30 minutes to get ready for school. He left for school right away a trip took 15 minutes. He wa
Bingel [31]

Answer:

Step-by-step explanation:

It would be about 6:40am

5 0
3 years ago
There are 47 guests that are coming to Jordan's house. Jordan wants each table to have more than 1 guest. And Jordan wants an eq
sergejj [24]

Answer:

This is not possible. You'd have to have an even number of guests to have an even number of people on each table. The only factor of 47 is 1 and 47 itself. So there is no possible way to distribute evenly

Step-by-step explanation:

8 0
3 years ago
Please answer this multiple choice question for 27 points and brainliest!!
storchak [24]

Answer:

A

Step-by-step explanation:

The equation will be in the form

y = mx + c ( m is the slope and c the y- intercept )

Calculate m using the slope formula

m = (y₂ - y₁ ) / (x₂ - x₁ )

with (x₁, y₁ ) = (0, 5) and (x₂, y₂ ) = (2.5, 0) ← 2 points on the line

m = \frac{0-5}{2.5-0} = - 2

The line crosses the y- axis at (0, 5) ⇒ c = 5

y = - 2x + 5 or

y = 5 - 2x → A

5 0
3 years ago
What is the number 21.0384 rounded to the nearest hundredth?
Anton [14]

Answer:

21.04

Step-by-step explanation:

the 8 is closest to 10 so that would make the 3 a 4.

3 0
3 years ago
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