<span>dA/dx = 100 - 4x & the 2nd derivative is -4 [i.e. -ve]
so setting dA/dx to zero will give a maxima
100 - 4x = 0
so x = 25 m
in other words, a rectangle with a given perimeter has the maximum area when it is a square</span>
<span>
</span>
Answer:
y=10°
Step-by-step explanation:
Here,
→(3x+18)°=(5x-4)°
→18°+4°=5x-3x
→22°=2x
→x=11°
Also,
3(4y+3)°+5x-4°=180°[The sum of the linear pair is 180°]
12y+9°+5x-4°=180°
12y+5°+5×11°=180°
12y+5°+55°=180°
12y=180°-60°
12y=120°
y=120°/12
y=10°
Answer:
I wish I could... T-T
Step-by-step explanation:
1. 2 ft 9 in
2. 1 ft 1 in
3. 8 ft 7 in
4. 6 ft 5 in
5. 8 ft. 1 in
6. 4 ft 4 in
7. 10 ft 2 in
Answer:
A
Step-by-step explanation: