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Marina86 [1]
3 years ago
5

Combine like terms to simplify the expression:

Mathematics
1 answer:
masha68 [24]3 years ago
3 0

Answer: k/2 - 3/5

Step-by-step explanation: This is what my calculator came up with.

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Following are heights, in inches, for a sample of college basketball players. 78 83 82 78 78 80 81 79 79 83 77 78 84 82 80 80 82
blagie [28]

The mean height of the basketball players is 80.3 inches

For given question,

we have been given the list of heights, in inches, for a sample of college basketball players.

We need to find the mean height of the basketball players.

We know that, for given sample of data

mean = sum of all observations ÷ total number of observation

First we find the sum of given heights.

78 + 83 + 82 + 78 + 78 + 80+ 81 +79+ 79 +83+ 77 +78+ 84+ 82+ 80+ 80 +82+ 84+78+ 80 = 1606

Total number of observations = 20

Using the formula of mean,

⇒ mean height = 1606/20

⇒ mean height = 80.3 inches

Therefore, the mean height of the basketball players is 80.3 inches

Learn more about the mean here:

brainly.com/question/6813742

#SPJ4

3 0
1 year ago
Evaluate the expression 7^2/ x^2 - 2 for x = 3
vovikov84 [41]

Answer:

7

Step-by-step explanation:

7²/x²-2 when x=3

49/3²-2

49/9-2

49/7

answer=7

4 0
3 years ago
In a group of 50 students, 29 celebrate Hanukkah, and 36 celebrate Christmas. If every one of the students in the group celebrat
Trava [24]

Answer:

15 students celebrate both holidays

Step-by-step explanation:

Let the number of students that celebrate both be x

By set notation, we add up individual sides as follows to give the number of values on the universal set

Mathematically, that will be;

50 = (29-x) + (36-x) + x

50 = 29-x + 36-x + x

50 = 65-x

x = 65-50

x = 15

3 0
3 years ago
An ostrich that is 108 inches tall is 20 inches taller than 4 times the height of a kiwi.what is the kiwi height
Ostrovityanka [42]

Answer:

Height of kiwi  = 44 inches

Step-by-step explanation:

Height of Ostrich = 108 inches

Let kiwi's height be x.

4x + 20 = 108

      4x = 108 - 20

       4x = 88

         x = 88/4

         x = 44

8 0
3 years ago
EASY MATH PLS HELP ASAP
Leviafan [203]

Answer:

27

Step-by-step explanation:

18 years ago she was 9 and 9 x 3 is 27

3 0
3 years ago
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