Answer:
third option
Step-by-step explanation:
Given
3
Multiply each element in the matrix by 3
=
=
Given expression -
Adding 3 to both sides ,
Dividing by 2 on both sides ,
Answer:
440
Step-by-step explanation:
1.5 hours he 90 minutes
660/ 90=7.333
7.333*60 (which is how many minutes in an hour = 440 miles
Answer:
C. x=4,y=9
Step-by-step explanation:
The given information show that
x+11y=103 (1)
9x+10y=126 (2)
Isolate x from (1)
x=103-11y
Substitute x=103-11y into (2)
9(103-11y)+10y=126
927-99y+10y=126
-89y=-801
y=9
So x=103-11x9=4
Answer:
CBA =~ DEA
Step-by-step explanation:
They are both right angles.
How do we know?
They both have the square.
Right angles can ONLY be 90 degrees.