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doggielover36
05.10.2019 •
Mathematics
Of equations:
twice a number plus three times a second number is negative one. the first number plus four times the second number is
two.
Solved
Show answers
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Ответ:
The first number is -2 and the second number is 1
see the procedure
Step-by-step explanation:
The complete question is
Translate to a system equation
Twice a number plus three times a second number is negative one. The first number plus four times the second number is two.
Call the first number m and the second number n
Let
m ----> the first number
n ----> the second number
we know that
Solve the system by substitution
Substitute equation B in equation A
solve for n
Find the value of m
therefore
The first number is -2 and the second number is 1
Ответ:
AD slope = (0 - 2)/(1-3) = 1
BC slope = (0-2)/(5-7) = 1
The line segments AD and BC have the same slope, so both line segments are parallel.
AB & CD slopes = 0
AB & CD will be horizontal since there is no change in their Y-values thus both segments are parallel to each other
So ABCD is a parallelogram
Step-by-step explanation: god bless