5 rows x 4 in each = 20 chairs in the classroom
Answer:
x=13/8
Step-by-step explanation:
8x-12=1
8x=13
x=13/8
Let S be the first side.
Longest side is then 2S.
Third side is 2S-10.
Perimeter is sum of all three sides = S+2S+2S-10 = 75
=>
5S-10=75
5S=75+10=85
S=17
Therefore
S=17 is the first side.
Longest side is then 2S=2*17=34.
Third side is 2S-10=2*17-10=24.
A^2 +b^2 = c^2
a= wall
b = ground (18)
c = ladder (25)
a^2 + 18^2 = 25^2
a^2 + 324 = 625
a^2 = 301
a = 17.349
<span><span>d over <span>dx </span></span><span>[2<span>x2</span>] equals</span></span><span> 2⋅d over dx [x2] equals</span><span> 2⋅2x which equals </span><span>4</span><span>x</span>
