X + y = 40
y = 9x
x + 9x = 40 (substitute 9x for y in 1st equation)
10 x = 40
x = 4
4 + y = 40 (substitute 4 for x in 1st equation)
y = 36
Its 23, you do the times first then add.
3x5=15
15+8=23
Answer:
All the angles on the bottom line are 60. The angles on the top line from left to right is 130, 60, 60, 130.
Step-by-step explanation:
Answer:
all real numbers
Step-by-step explanation:
distribute the 2
2x+2=-8x+12+10x-10
combine like terms on each side
2x+2=2x+2
0=0
all real numbers
Answer:
the process or method of noting or setting down by means of a special system of signs or symbols. the act of noting, marking, or setting down in writing. a note, jotting, or record; annotation: notations in the margin.