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wariber [46]
3 years ago
14

The mean of three numbers is 4 Two of the numbers are 1, 9 What is the missing number?

Mathematics
2 answers:
JulsSmile [24]3 years ago
8 0
Answer is 2

(9+1+x)/3=4
(10+x)/3=4
10+x= 3*4
x= 12 -10
x= 2
aliya0001 [1]3 years ago
7 0

Answer:2

Step-by-step explanation: 9+1+2=12

12\3=4

ANSWER : 2

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Answer:

The coordinates of the point is (5.5, -2)

Step-by-step explanation:

Okay, what we want to do here is to get the point that divides the line that joins the points (3,3) to (7,-5) in the ratio 5 to 3

Generally, given the ratio a:b and we want to divide the line joining the points (x1,y1) and (x2,y2) in that ratio, we use the condensed formula below;

Let’s call the point dividing the line in the given ratio z.

The coordinates of Z is;

{(bx1 + ax2)/(a+b), (by1 + ay2)/(a+b)}

In this question (x1,y1) = (3,3)

While (x2,y2) = (7,-5)

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Substituting these values into the coordinate equation for point z, we have ;

{((3(3) + 5(7))/(5+3), ((3)(3) + 5(-5))/(5+3)}

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