Answer:
There are 9 chairs each row
There are 8 rows with a total of 72 chairs
Step-by-step explanation:
A)C=Chairs in a row
Total number of rows= C-1
C·(C-1)=72
So now you use BHASKARA to resolve it
C²-C-72=0
(1√1-4·1·(-72))÷2=---> X1=(1+17)÷2= X1=9
------> X2=(1-17)÷2 X2=-8
C=9 because X2=-8 cant be because you dont have negative chairs
9·(9-1)=72 Correct
a)There are 9 chairs each row
Answer:
-5t² + 2t - 3
Step-by-step explanation:
G = 3t2 – 5t + 6
P = -8t² + 7t – 9
G + P
= (3t² – 5t + 6) + (-8t² + 7t – 9)
= 3t² - 8t² - 5t + 7t + 6 - 9
= -5t² + 2t - 3
Answer:
False
Step-by-step explanation:
3 1/5 - (-2 2/3) ≠ 15
Answer:
kssssssssssssssssss
Step-by-step explanation:
D. 9 cm because a times b equals c