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nadya68 [22]
3 years ago
10

Choose the following which is COMPLETELY correct:

Mathematics
1 answer:
Vlada [557]3 years ago
5 0

Answer:

D

Step-by-step explanation:

Mean = (4+4+5+8+9) / 5

            30 / 5

             6

Median = put them in order and the one in the middle is the median.

                4, 4, <u>5</u>, 8, 9

Mode = the most common

            <u>4, 4</u>, 5, 8, 9

     

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12<br> x<br> −<br> 15<br> =<br> 6<br> −<br> 3<br> x
11Alexandr11 [23.1K]

Answer:

x= 7/5 (1 2/5 or 1.4)

Step-by-step explanation:

Move the variable to the left-hand side and change its sign.

12x-15+3x=6

Move the constant to the right-hand side and change its sign.

12x+3x=6+15

Collect like terms.

15x=21

Divide both sides of the equation by 15.

x=7/5 (1 2/5 or 1.4)

5 0
2 years ago
I keep messing this up for #13 I got (1/19, 35/38) and for #15 I got (2,-1) both of which I know are wrong, someone help me unde
valentinak56 [21]
2x  + y = x/2 + 1  multiply  this by -4:-
-8x - 4y = -2x - 4
4y         = 2x       Adding:-

-8x = -4
x = 1/2

Substitute in 4y = 2x:-

4y = 2*1/2

y = 1/4 

Answer ( 1/2, 1/4)
3 0
3 years ago
What expression is equivalent to 3(x-2)
fredd [130]

Answer:

3x - 6

Step-by-step explanation:

5 0
3 years ago
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Does 28,53,45 make a right triangle
Arada [10]

Answer:

yesh it does

Step-by-step explanation:

7 0
3 years ago
What does a correlation coefficient of r = -0.89 indicate?
Leviafan [203]

Answer:

There is a strong but negative correlation. The - cuases a doawnward line but .89 is close to 1

Step-by-step explanation:

5 0
2 years ago
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