Answer:
B
Step-by-step explanation:
First calculate BD using sine ratio in Δ BCD and the exact value
sin60° = , thus
sin60° = = = = ( cross- multiply )
2BD = 12 ( divide both sides by 2 )
BD = 6
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Calculate AD using the tangent ratio in Δ ABD and the exact value
tan30° = , thus
tan30° = = = = ( cross- multiply )
AD = 6 ( divide both sides by )
AD = 6 → B
1. Turn the fractions in to decimals
2.Add them up
2.13 + 3.5 + 2.5 = 8.13ft
Answer: 10.75
Steps:
After 110miles, it used 2.75gallons
Therefore, the amount of gas used per mile is: 100/2.75= 40 gallon per mile
So after 430miles, the number of gallons used: 430/40 = 10.75 gallons
Hope this helps ʕ•ᴥ•ʔ
Answer:
0 = 0 => Infinitely many solutions
Step-by-step explanation: