All categories

3 years ago

Find the mean:31, 1, 12, 2, 21, 22, 1, 0, 31, 13

1 answer:

5 0

The mean is 13.4 because after I add the numbers in the set, the sum comes out to be 134. There are 10 numbers in the set, so you divide 134 by 10, which is 13.4 (134 ÷ 10 = 13.4). That is how you get the mean. It's "mean" to you because you 'gotta do a lot of work to get your final mean.

You might be interested in

Im so confused please help with 5 and 6

Drupady [299]

Answer:

5)102,78

6)56,56

See THE IMAGE FOR SOLUTION 

8 0

3 years ago

Read 2 more answers

Perimeter of a pentagon is 120cm what is the length of one of the sides

Schach [20]

6? maybe 12 idk but its the best i could do

3 0

2 years ago

An open rectangular box is 4 feet long and has a surface area of 20 square feet. Find the dimensions of the box for which the vo

sweet-ann [11.9K]

SA=2H(L+W)+LW for open box
20=2H(4+W)+4(W)
distribute
20=8H+2WH+4W
divide both sides by 2
10=4H+WH+2W
solve for 1 variable, pick W
10-4H=WH+2W
10-4H=W(H+2)
(10-4H)/(H+2)=W

V=LWH
subsitute 4 for V, subsitute H for H and (10-4H)/(H+2) for W
V=(4)(H)(10-4H)/(H+2)
V=(40H-16H²)/(H+2)
find max value
take deritivitive of this thing
V'=-16(H²+4H-5)/((H+2)²)
using sign chart
sign changes from positive to negative at H=1

so at H=1
find W

W=(10-4H)/(H+2)
W=2

the dimeionts are

length=4ft
width=2ft
height=1ft
(the volume is 8 cubic feet)

3 0

3 years ago

((-2^2)(-1^-3))•((-2^-3)(-1^5))^-2

Vitek1552 [10]

Answer:

256

Step-by-step explanation:

A calculator works well for this.

_____

None of the minus signs are subject to the exponents (because they are not in parentheses, as (-1)^5, for example. Since there are an even number of them in the product, their product is +1 and they can be ignored.

1 to any power is still 1, so the factors (1^n) can be ignored.

After you ignore all of the things that can be ignored, your problem simplifies to ...

(2^2)(2^-3)^-2

The rules of exponents applicable to this are ...

(a^b)^c = a^(b·c)

(a^b)(a^c) = a^(b+c)

Then your product simplifies to ...

(2^2)(2^((-3)(-2)) = (2^2)(2^6)

= 2^(2+6)

= 2^8 = 256

3 0

3 years ago

PLZ HEEELLLLPPPPP!!!!!!

Alexeev081 [22]

Answer:

p=-7

Step-by-step explanation:

3 0

2 years ago

Read 2 more answers