You would wana use SA=2lw+2lh+2hw
so SA=2(8×2)+2(8×12)+2(2×12)
make the calculations than mention how you find the surface of one side of the box than the whole surface area by using that formula
Answer:
t = 7
Step-by-step explanation:
5(2t - 3) – 7.5t = 0.5(12 – t)
5*2t - 3*5 - 7.5t = 12*0.5 - t *0.5
10t - 15 - 7.5t = 6 - 0.5t {Now, combine like terms}
10t - 7.5t - 15 = 6 - 0.5t
2.5t -15 = 6 - 0.5t {Add 15 to both sides}
2.5t = 6 - 0.5t + 15
2.5t = 21 - 0.5t { Add 0.5t to both sides}
2.5t + 0.5t = 21
3t = 21 {Divide both sides by 3}
t = 21/3
t = 7
Answer:
x^2 + 3x -1
Step-by-step explanation:
f(x) = 3x-2
g(x) = x^2+1
(f+g)(x) = 3x-2+x^2+1
Combine like terms
= x^2 + 3x -1
We have
-9 + 7 = -2
You can also rewrite this as
7 - 9 = -2
If it makes you more comfortable.
Hope this helps.
<em>capacity = 140 liters</em>
- Step-by-step explanation:
<em>1 h = 60 min</em>
<em />
<em>60 min ................ 240 l</em>
<em>35 min ...................... x l</em>
<em>x =35×240/60 = 8400/60 = 140 liters</em>
