dbn4everloved8
02.09.2019 •
Mathematics
How do i use systems of equations to eliminate these two problems: -10x-8y=30 and -10x+5y=30
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Ответ:
-10x-8y=30
10x-5y=-30
-13y=0
-13y/-13=0/-13
y=0
then you would plug y into -10x+5y =30
to get 10x=30
10x/10=30/10
x=3
the point would be (3,0)
Ответ:
(2.6, -2.7)
Step-by-step Explanation:
Let X represent the point which is 7/10 of the way from A to B.
AX to XB = 7:10 = AX/XB = 7/10.
Formula for internal division to find the coordinates is:
Where,
Substitute the values above into the stated formula to find x and y coordinates as follows:
The coordinates of the point 7/10 of the way from A to B are (2.6, -2.7)