Answer:
51 liters.
Step-by-step explanation:
By proportion number of litres for 1428 miles
= 17 * 1428/476
= 17 * 3
= 51 liters.
3*boys=2*18
3*boys=36
boys=12
12+18=30
total number of students: 30
Take the -3/5 and add it to 1/30 which would equal 19/30, so x= 19/30
If you think about it, an octagon is made up of 8 triangles. So you first find the area of one triangle then multiply it by 8 for the total area:
A=1/2bh
A=1/2(9.9)(12)
A=59.4
59.4 x 8= 475.2
Therefore the total area for the octagon should be 475.2 units^2
Hope this helps !
