Answer:
False
Step-by-step explanation:
If (8,9) is a solution, you will be able to substitute 8 for x, and 9 for y.
(-2 x 8) + (4 x 9) = -20?
-2 x 8 = -16
4 x 9 = 36
-16 + 36 = 20
So, (8,9) is not a solution to the system.
A. 1 and 3
B. 5 and 7
D. 6 and 8
Answer:
7 groups
Step-by-step explanation:
1 hour = 60 minutes
3/4 of an hour = 3/4(60) = 45 minutes
therefore, 1 3/4 hours is 105 minutes
105 divided by 15 is 7
Answer:
Height(h) = 24in
Area = 204in²
Step-by-step explanation:
we would use the heron formula because we have all the sides to calulate the area
S = (A+B+C)/2 = (25 + 17 + 26)/2 = 68/2 = 34
area = √s(s-a)(s-b)(s-c) = √34(34-25)(34-17)(34-26) = √34(9)(17)(8) = √34x9x17x8 = √41616 = 204
area= (1/2)bh
204 = (1/2)bh b= 17, h =?
204 = (1/2)17h
204 x 2 = 17h
408 = 17h
h = 408/17 = 24in
Height(h) = 24in
Area = 204in²