The sound intensity of rustling leaves, y = 20 decibels
<u>Step-by-step explanation:</u>
y = 10logx
The sound intensity of rustling leaves is 100 times the reference intensity.
x = ratio of intensity of sound to reference to intensity
x = 100:1 or x = 100
y = 10 log(100) = 10 * 2 = 20 decibels
y = 20 decibels
the complete question is
<span>Julia owes her dad $12. She wants a new blouse that just went on sale, so she borrows $20 from her sister. She pays her father $5 and spends the rest on the blouse. Which statement is true?
A.<span> Julia’s money status is $8 because she started at –$12 and borrowed $20.
B.</span> Julia’s money status is –$7 because she started at –$12, got $20, but only paid $5 of her debt.<span>
C.</span> Julia’s money status is –$27 because she started at –$12, borrowed $20, but paid off $5.<span>
D.</span> Julia’s money status is –$32 because she began at –$12 and borrowed $20.
we know that
</span>Julia owes her dad $12 already and again she borrowed $20 from her sister
So,
total debt = $12+$20=$ 32.
And,
she paid $5 only to her father.
So,
Her money status is
-32+5 = -$27
the answer is the option
C. Julia’s money status is –$27 because she started at –$12, borrowed $20, but paid off $5.
Answer:
$1,616.91
Step-by-step explanation:
Data provided in the question:
Total distance to be driven = 22,000 miles
Average of hybrid = 38 mpg
Thus,
total fuel required by hybrid to travel 22,000 miles = 
= 578.95 gallons
and,
Average of SUV = 21 mpg
total fuel required by SUV to travel 22,000 miles = 
= 1047.62 gallons
Therefore,
savings in fuel = 1047.62 gallons - 578.95 gallons = 468.67 gallons
Thus,
the savings in fuel expenses = Savings in fuel × Cost of gas
= 468.67 × 3.45
= $1,616.91
Answer:
79.2 tons
Step-by-step explanation:
What must be done is to apply a proportion rule, taking into account what happened in the registry and what is wanted for this new year. In the following way we can calculate the amount of tons of oranges.
Powder concentrate Oranges
45 tons -------------------------> 54 Tons
66 tons -------------------------> X Tons
X = 66 * 54/45
X = 79.2, that is to say that 79.2 tons are necessary to produce 66 tons of powder concentrate to make juice.
