First thing you should do is reduce coefficients.
1st equation has all multiples of '2'. Divide by 2
---> x +3y = -6
2nd equation has multiples of 5. Divide by 5.
---> x - y = 2
Now elimination part is easier.
Eliminate 'x' variable by subtracting 2nd equation from 1st.
x + 3y = -6
-(x - y = 2)
----------------------
4y = -8
Solve for 'y'
4y = -8
y = (-8)/4 = -2
Substitute value for 'y' back into 2nd equation:
x - (-2) = 2
x + 2 = 2
x = 0
Solution to system is:
x=0, y =-2
Answer:
Step-by-step explanation:
ABC and DEF are congruent
ABC and JKL are not congruent
ABC and QRS are congruent
JKL and DEF are not congruent
JKL and QRS are not congruent
QRS and DEF are congruent
the answer to your question is 6/7 × 1 1/4 = 3/14
If I’m not mistaken G = 3, hope this helps! ;)
The following are scores made on a math test. 80, 90, 90, 85, 60, 70, 75, 85, 90, 60, 80 What is the mode of these scores?
puteri [66]
Answer: 90
Step-by-step explanation: The mode is the number that appears most frequently in a data set.
Notice that the score 90 appears more than any other
number in the set.
This means that 90 is the mode.
