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2 years ago

13

Christina used 2 1/3 gallons of gas to drive her car 64 1/6 miles. What was the fuel efficiency of her car, in moles per gallon,

for the trip

1 answer:

marishachu [46]2 years ago

7 0

Answer:

183.85

Step-by-step explanation:

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The lenght of an arc in a circle with radius 8 inches is 3.2π. determine the measure of the arc

aleksandrvk [35]

Answer:

72

Step-by-step explanation:

32pi×360/2pi(8)=72

central angle= arc length 360/2pi×r

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2 years ago

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Pie

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3 years ago

The expressions given represent the measures of the acute angles of a right triangle Find the measure of each acute angle.

olasank [31]

Answer:

30, 60

Step-by-step explanation:

The sum of a triangles angles should be 180.

Subtract 90 because it's a right triangle.

180 - 90 = 90

Now we know the sum of the other angles should be 90.

x + 2x = 90

Solve for x.

3x = 90

x = 30

Now you substitute 30 for x.

(30), 2(30)

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2 years ago

If there are initially 1800 bacteria in a culture, and the number of bacteria double each hour, the number of bacteria after t h

Nataly_w [17]

Answer: 1.58 hours

<u>Step-by-step explanation:</u>

$5400=1800(2)^t\\\\3=2^t\\\\ln\ 3=ln\ 2^t\\\\ln\ 3=t\cdot ln\ 2\\\\\dfrac{ln\ 3}{ln\ 2}=t\\\\1.58=t$

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3 years ago

If there are 23 students in your class, and your teacher is pulling random names from a hat, what is the probability that your n

krok68 [10]

If the teacher isn't putting the names back in the hat then it would be 1/21 if she is then 1/23

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2 years ago

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