substitution method
Step-by-step explanation:
- use second equation
- make x subject of the formula
- put it back in the first equation
- solve to find the value of y
- substitute y value in any equation between the two.
- then you get x value
Answer:
Problem 13: yes
Problem 14: no
Step-by-step explanation:
Problem 13:
Plug the values of x and y to solve.
-23 = -7(5) + 12
-23 = -35 + 12
-23 = -23
The values are equal, so the coordinates <u>do</u> solve the equation. It's a yes.
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Problem 14:
Plug the values of x and y to solve.
-9 = -7(-3) + 12
-9 = 21 + 12
-9 = 33
The values are not equal, so the coordinates <u>do not</u> solve the equation. It's a no.
hope this helps :)
Answer:
80 degrees.
Step-by-step explanation:
THe reason why the 3 angles add up to 180 degrees is because they are the 3 angles in the triangle.
So m APB = 180 - 100
= 80 degrees.
You would first divide 5 by 8 to get 0.625.
Then you compare.
0.7 > 5/8 (0.625)
