Hi,
BC²=CA²-BA²=13-9=4=2² (Pythagore)
CB/ED=AB/AD (Thalès)
2/2.5=3/AD==>AD=3*2.5/2=7.5/2
DB=DA-AB=7.5/2-3=0.75
I don't know how you call this 2 theorems (sorry)
A= l * W (area = length times width)
Answer:
log1/8
Step-by-step explanation:
Answer:
$17
Step-by-step explanation:
Given,
7 songs=$5.95
1 song=$5.95/7
So,20 songs=$5.95/7 ×20
=$17
SA pyramid+SA rectangular prism= total SA
Total SA= Area of the base+ area of the four rectangles+area of four triangles
Total SA= length^2+length*width*4+1/2(slant height)(length)*4
length=12, width=8, slant height=10
Total SA= (12)^2+4(1/2*12*10) +4(12*8)=768cm^2
so C is correct.