Answer:
5 : 18 : 12
Step-by-step explanation:
Express the ratio B : C in fractional form, that is
= ( cross- multiply )
6C = 4B ( divide both sides by 6 )
C = B = B , then
C = × 18 = 2 × 6 = 12
Hence
A : B : C = 5 : 18 : 12
99 divided by 19.8 added by 8 and subtracted by 8
Answer:
s= -1
Step-by-step explanation:
Well i ll give u some tips
1-u should know the formulas for calculating different objects areas
2-find the length of their sides or diagonals(which are needed on the formula)
3-calculate the area
for example the triangle on the picture
1-s=leg1*leg2/2
2-the length of:leg1=10-3=7,,leg2=7-1=6
3-s=7*6/2=21