3) subtract the second equation from the first...
(x+7y=64)
-(x+3y=28)
_________
4y=36 divide both sides by 4
y=9, which makes x+7y=64 become:
x+63=64
x=1
So the solution to the system of equations is the point (1,9)
4)
Subtract the second from the first:
4x-4y=24
-(x-4y=3)
_______
3x=21 divide both sides by 3
x=7, which makes x-4y=3 become:
7-4y=3
-4y=-4
y=1
So the solution to the system of equation is the point (7,1)
Answer:
Part A: 81.5%
Part B: About 95% of the data lie between 53 and 65.
Step-by-step explanation:
Note: the percentages marked in red and blue never change
For Part A, we add the percentages that are between 53 and 62. So, 34% + 34% + 13.5% which is 81.5%
For Part B, we can look at this graph and seen that 95% of this data set lies between 53 and 65
Hope this is correct and of help!
The ex- suffix often correlates a word to mean "outside", while the in- suffix often correlates a word to mean "inside". An exterior angle of a polygon would mean "an angle outside of a polygon". An interior angle of a polygon would mean "an angle inside of a polygon". Three exterior angles of this polygon would be angle B, angle D, and angle A. This is because these angles are outside of the polygon due to the extending lines from the shape. Two interior angles of this polygon would be angle 6 and angle 8 (explanation was given when I first began answering this question). Angle 9 would be exterior since it is outside of the polygon. Two exterior angles of the polygon that are congruent are angle D and angle 9, since they are both 90 degrees (right angles).
Answer:
20 ft.
Step-by-step explanation:
7 ft and 3 ft.
3*2=6
7*2=14
6+14=20.
The next two numbers are -8 and 4 because each number is divided by 2