Answer:
A
Step-by-step explanation:
How many students are in Lucy’s school? Is the correct answer :D
Answer:180.3
Step-by-step explanation:
a=150
b=50
C=120
c^2=a^2+b^2-2 x a x b x cosC
c^2=150^2+50^2-2x150x50xcos120
c^2=150x150+50x50-2x150x50xcos120
c^2=22500+2500-15000cos120
c^2=25000-15000x-0.5
c^2=25000+7500
c^2=32500
c=√(32500)
c=180.3
Answer:
about 98 percent
Step-by-step explanation:
about 78.09% of the atmosphere is nitrogen and 20.95% of oxygen so when we add 78 and 20 we get 98% .Therefore about 98%of the earth is composed of nitrogen and oxygen
Let $x be the cost of the bench, then $x+100 is the cost of the table
x+x+100=1000
2x=900
x=450
So the cost of the bench is $450
