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Rashid [163]
3 years ago
8

What is the mean for the data set 138 140 105 112 108 134 106 181 164 105

Mathematics
2 answers:
chubhunter [2.5K]3 years ago
7 0

Answer:

the mean for the data set is 129.3

trapecia [35]3 years ago
5 0
The answer is 129.5 because add all the numbers and divide by how maybe numbers there are (10) so you have 1295/10 do common factors so u get 259/2 and your answer is 129.5
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At a cafe, for every 5 sodas sold there are 9 teas sold. What is the ratio of teas sold to sodas sold? A) 5 : 9 B) 9 : 5 C) 9 :
frutty [35]
For 5 sodas sold, there are 9 teas sold


the ratio is tea: soda, or 9:5

B) 9:5 is your answer

hope this helps
7 0
3 years ago
Read 2 more answers
A rectangular playground is to be fenced off and divided in two by another fence parallel to one side of the playground. Three h
neonofarm [45]

Answer:

  • 50 ft by 75 ft
  • 3750 square feet

Step-by-step explanation:

Let x represent the length of the side not parallel to the partition. Then the length of the side parallel to the partition is ...

  y = (300 -2x)/3

And the enclosed area is ...

  A = xy = x(300 -2x)/3 = (2/3)(x)(150 -x)

This is the equation of a parabola with x-intercepts at x=0 and x=150. The line of symmetry, hence the vertex, is located halfway between these values, at x=75.

The maximum area is enclosed when the dimensions are ...

  50 ft by 75 ft

That maximum area is 3750 square feet.

_____

<em>Comment on the solution</em>

The generic solution to problems of this sort is that half the fence (cost) is used in each of the orthogonal directions. Here, half the fence is 150 ft, so the long side measures 150'/2 = 75', and the short side measures 150'/3 = 50'. This remains true regardless of the number of partitions, and regardless if part or all of one side is missing (e.g. bounded by a barn or river).

6 0
3 years ago
BC=40 CD=30 what is the value of BC-AC
Ann [662]

Answer:

what is ac?

Step-by-step explanation:

6 0
3 years ago
Use the distributive property to solve the equation.<br> 2 (x – 9) = 10
scoundrel [369]

Answer:

x = 14

Step-by-step explanation:

Hi,

To begin, distribute the 2 to the x and -9.

So...

2 ( x - 9 ) = 10

2x - 18 = 10

2x = 28

x = 14

I hope this helps :)

5 0
3 years ago
The surface area of a cube is 27^2. Calculate the length of the sides of the cube
Anon25 [30]

Answer:

Step-by-step explanation:

Do you mean 27 units² ?

A cube has six congruent, square faces. Area of one face = (27/6) units²

Length of one edge = √(27/6)

= √(9/2)

= √9/√2

= 3/√2

= 3√2/2 units

5 0
3 years ago
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