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Radda [10]
2 years ago
14

What is the mean of the set {4, 6, 8, 10}?

Mathematics
2 answers:
ikadub [295]2 years ago
6 0

Answer:

Defination:

.the collection of distinct elements or members.

Step-by-step explanation:

olga2289 [7]2 years ago
3 0

Answer:

Step-by-step explanation:

8 I think

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Please help me out :c - I will mark brainliest
andrew-mc [135]

Answer:

6.6%

Step-by-step explanation:

6 0
2 years ago
The perimeter of a rectangle is 42 inches, and its area is 110 square inches. find the length and width of the rectangle.
lorasvet [3.4K]
p = 2w + 2l              p = 42 
a = l * w                   a = 108

You want to make either the length or width variable (I chose the width variable to be by itself. It doesn't matter) by itself by:

Divide both sides by 2.
(p) ÷ 2 = (2w + 2l) ÷ 2 
               2's  cancel  out
\frac{p}{2} = w + l

Subtract both sides by either length or width depending on what variable you chose to make by itself (in this case I subtracted the length variable because I wanted the width variable by itself).
\frac{p}{2} - l = w + l - l
                 l's  cancel  out 
p/2 - l = w

a = l * w

You replace w with the equation above p/2 - l = w 
a = l( \frac{p}{2} - l)

Multiply out the L.
a = \frac{p}{2}l - l^{2}

Plug in all your numbers a = 110 and p = 42
110 = \frac{42}{2}l - l^{2}
110 = 21l - l^{2

Move everything to the left side so l^{2} would be positive (makes the equation easier when l^{2} is positive).
l^{2} - 21l + 110 = 0

Factor.
(l -10)(l-11) = 0

Make each parenthesis set equal to 0.
l-11=0     l-10=0

Add.
l = 11  l = 10

By doing this you solve for both the width and length so the answer is:
w = 11    L = 10
8 0
3 years ago
Don't guess!
Alja [10]

Answer:

The correct answer would be J; \frac{1}{2} r + 2;  

Step-by-step explanation:

Using the algebra;

\frac{1}{2}  * r = \frac{1}{2} r

\frac{1}{2} * 4 = 2

Altogether this would give "J" as the answer.

Hope this helps!

7 0
2 years ago
Read 2 more answers
Evaluate 20 + 6x when x = 0.
bulgar [2K]

Answer:

If x=0 then the answer is 20.

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
Combine like terms.<br><br> y + 3 + 9(y + 5) =
Mnenie [13.5K]

Answer:

The answer is 10y + 48.

Step-by-step explanation:

First you have to get rid of brackets by expanding :

y + 3 + 9(y + 5) \\  = y + 3 + 9y + 45

Next you have to collect like-terms :

y + 3 + 9y + 45 \\  = 10y + 48

7 0
3 years ago
Read 2 more answers
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