Answer:
-3.5,-0.2,0.6,5 ... is the answer
<span>50-8t<90
50-90<8t
-40<8t
8t>-40
t>-5
Solutions should go to the right.
Mary probably was solving it as following
</span>50-8t<90
<span>-8t<90-50
-8t<40 (here, when she divided both sides by -8, she had to change sign < to the sign >)
But she did not change the sign, and got
t<-5
</span>
Answer:
It is a Cuboid
Area of the base = 12x9
Area of the top = 12x9
Area of the right lateral faces = 9x7
Area of the left lateral faces = 9x7
Area of the front face = 12x7
Area of the rear face = 12x7
Total surface area is the sum of above (please do it yourself)
The volume = base surface Area x height
= 12x9x7 = 756
Be reminded to put in the right unit for Area and volumn
Answer:
56
Step-by-step explanation:
I used a calculator I'm sorry
