the TV screen would have an area of 122.88 inches
to find this all you would have to do is multiply the 38.4 by 3.2
Answer:
the speed will be 3 meters
Step-by-step explanation:
Answer:
length (l)=69 cm
breath(b)=45cm
area (a)= 10560 cm²
height (h)=?
now,
Area of cuboid =2(lb+bh+hl)
10560 cm²=2(60×45+45×h+60×h)
10560 cm²=
We can factor x^2-4x-21 to get (x+3)(x-7)
Notice how
3 plus -7 = -4
3 times -7 = -21
which helps us factor the trinomial
After you've factored it, we can cancel out a pair of (x+3) terms leaving us with the final answer of x-7
Note: the cancellation happens because (x+3)/(x+3) = 1. Divide anything (except 0) over itself and you'll get 1. A simpler example of this is 5/5 = 1.