Answer:
Step-by-step explanation:
6. 78-2(3+16) /4
(78-2x19)/4
( 78 -38)/4
40/4=10
7.
(66/11)3 -6*8
6x6x6 -48
216-48=168
8.
10/7+2(8-11/2)
10/7+2(8-5.5)
10/7+2*2.5
10/7+5
10/7 + 35/7
45/7 =
Answer:
Question was not fully given but...
Step-by-step explanation:
If you restate the full question it can be answered
We have x^2 + 2 · x · (11/2) + (11/2)^2 = - 24 + (11/2)^2;
Then, ( x + 11/2 )^2 = -24 + 121/4;
( x + 11/2 )^2 + 96/4 - 121/4 = 0;
( x + 11/2 )^2 - 25 / 4 = 0;
( x + 11/2 )^2 - (5/2)^2 = 0;
( x + 11/2 - 5/2)·( x + 11/2 + 5/2 ) = 0;
( x + 6/2 )·( x + 16/2 ) = 0;
( x + 3 )· ( x + 8 ) = 0;
x = - 3 or x = -8;
The first choice is the correct answer.
Answer:
Step-by-step explanation:
Total number of miles is 700.
On the first day, they drove 6 and 2/3 hours. We would convert 6 and 2/3 hours to improper fraction. It becomes 20/3 hours. On the second day, they drove 5 and 3/4 hours. Converting to improper fraction, it becomes 23/4 hours. Total number of hours that they drove during the first two days is the sum of hours driven on the first day and hours driven on the Second day. It becomes
20/3 + 23/4 = (80 + 69)/12
= 149/12 hours
At this rate, it should take 7,500 years to dissolve 15m thiccccc
