Answer:
x = -2, y=1
Step-by-step explanation:
x-7y=-9---------------------equation 1
-x+8y=10-------------------equation 2
From equation 1, make x the subject of formula
x=7y-9----------------------equation 3
substituting x=7y-9 in equation 2,
-(7y-9)+8y=10
Expanding bracket
-7y+9+8y=10
Collecting like terms
8y-7y=10-9
y=1
substituting y=1 in 3
x=7(1)-9
x=7-9
x=-2
Both of the other angles should be 45. 180-90=90. 90 divided by 2 equals 45
Answer:
D. 125cm
Step-by-step explanation:
Round each number for an estimate so you get 5 x 5 x 5 = 125
Just multiply all of the numbers and you'd get 483 cubic cm.
You can find the answer by first dividing 12 by 6 which = 2
so multiply 36 by 2 which =72
72 is your answer ;) hope this helps
