Answer:
4 x 5
Step-by-step explanation:
I'm assuming that the diagonals intersect at E. Since diagonals of a parallelogram bisect each other, BE=ED.
- 7x-2=x²-10
- x²-7x-8=0
- (x-8)(x+1)=0
- x = -1, 8
As distance must be positive, we reject the negative case, so x=8.
Thus, BE=ED=54.
80 miles per hour is 128.74752 kilometers per hour
#9. There are 180 degrees in a triangle. We already know two of the sides which added together make 112. Then we do, 180-112=68
#10. We do the same process. 90 + 60 = 150
150-180= 30
#11. To find whether or not any three numbers can make a triangle, two of the numbers must equal more than the remaining number. But this has to be the case for any combination. 6+7=13. 13 is larger than 11. So yes it can.
#12. 8+2=10 which may be bigger than 6 but, 6+2=8. Which is equal to 8. So no, it cannot make a triangle.
I’m still working out the first question
Answer/Step-by-step explanation:
A. 
Using b = 2
Using b = 4
Using b = 6
Using b = 8
Using b = 10
Using b = 2
B. 
Using x = 3
Using x = 5
Using x = 7
Using x = 9
Using x = 11
Using x = 13
C. 
Using a = 2
Using a = 3
Using a = 4
Using a = 5
Using a = 6
Using a = 7
D. 
Using y = 2
Using y = 3
Using y = 5
Using y = 10
Using y = 8
Using y = 6
