Answer:
we use side of triangle to find area and divide by 2 so first one is 15*15+ 8*15/2 225+60=285
Answer:

Step-by-step explanation:
All numbers in scientific notation or standard form are written
,
where m is a number between 1 and 10.
Answer:
9x^2 - 49y^2
Step-by-step explanation:
Easey
ratio and proprotion
or
knowlege
1. ratio and proportion
distance/time=2/30
2hours=60*2=120mins
xdistance
2/30=x/120
1/15=x/120
times boht sides by 120
120/15=x
8=x
8 miles
knowlege way
30 mins=1/2 hour
30 mins=1/4 of 2 hours
2=1/4 of 2 hours
2*4=8
8 miles