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Solve the following system using elimination:
{7 x + 2 y = -19 | (equation 1)
{2 y - x = 21 | (equation 2)
Add 1/7 × (equation 1) to equation 2:
{7 x + 2 y = -19 | (equation 1)
{0 x+(16 y)/7 = 128/7 | (equation 2)
Multiply equation 2 by 7/16:
{7 x + 2 y = -19 | (equation 1)
{0 x+y = 8 | (equation 2)
Subtract 2 × (equation 2) from equation 1:
{7 x+0 y = -35 | (equation 1)
{0 x+y = 8 | (equation 2)
Divide equation 1 by 7:
{x+0 y = -5 | (equation 1)
{0 x+y = 8 | (equation 2)
Collect results:
Answer: {x = -5, y = 8
When 10 meters of something is divided into 6 equal parts,
then each part is (1,666 and 2/3) millimeters long.
A). Whole number . . . No, that's not a whole number
B). Interger . . . No, there's no such thing as an 'interger'.
C). Rational number . . . Yes, its the ratio of 10,000 to 6 .
D). Irrational number . . . No, it's not irrational.
Answer:
35 1/2 divided by 1 1/4 then 27 1/5 divided by 4/5
For the blue car the answer is 28.4.
For the red car the answer is 34.
Answer:
Step-by-step explanation:
c
