Maya is researching energy costs. She made a table of the cost for different numbers of gallons of gasoline. How much will 12 ga
llon cost?
A.$7.80
B.$23.40
C. $31.20
D. not enough information
A.$7.80
B.$23.40
C. $31.20
D. not enough information
2 answers:
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Answer:
The length of o is 24 centimeters
Step-by-step explanation:
In Δ OPQ
∵ Side p is opposite to ∠P
∵ Side q is opposite to ∠Q
∵ Side o is opposite to ∠O
→ To find side o we must use the cosine rule
∴ o =
∵ p = 38 cm
∵ q = 29 cm
∵ m∠O = 39°
→ Substitute them in the rule to find o
∴ o =
∴ o = 23.92008154
→ Round it to the nearest centimeter (whole number)
∴ o = 24 centimeters
∴ The length of o is 24 centimeters