Lilys car has a fuel efficiency of 8 liters per 100 kilometers.

Mathematics

2 answers:

zavuch27 [327]3 years ago

8 0

100 : 8 = 12.5

12.5 Km per liter is your answer

marin [14]3 years ago

7 0

Answer:

12.5 km per liter.

Step-by-step explanation:

We have been given that Lily's car has a fuel efficiency of 8 liters per 100 kilometers. We are asked to find fuel efficiency of Lily's car in kilometers per liter.

$\text{Fuel efficiency}=\frac{\text{Total distance traveled}}{\text{Total fuel}}$

$\text{Fuel efficiency}=\frac{\text{100 km}}{\text{8 liters}}$

$\text{Fuel efficiency}=\frac{\text{12.5 km}}{\text{liter}}$

Therefore, fuel efficiency of Lily's car is 12.5 km per liter.

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Rewrite 4 1/2=2 please

Luda [366]

The logarithmic expression of 4^(1/2) = 2 is $\log_4(2) = \frac 12$

<h3>How to rewrite the expression?</h3>

The expression is given as:

4^(1/2) = 2

Take the logarithm of both sides

log(4^(1/2)) = log(2)

Apply the change of base rule

1/2log(4) = log(2)

Divide both sides by log(4)

1/2 = log(2)/log(4)

Change the base

$\frac 12 =\log_4(2)$

Rewrite as:

$\log_4(2) = \frac 12$

Hence, the logarithmic expression of 4^(1/2) = 2 is $\log_4(2) = \frac 12$

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8 0

2 years ago

Jeremy's score was 1.75 standard deviations above the mean. which kf thr following is closest to his percentile rank

Gelneren [198K]

The answer is 96%.

Explanation:
It is generally presumed that the scores are normally distributed.

1) You are given how many standard deviations from the mean Jeremy's score is. This is exactly the definition of the z-score. Therefore z = 1.75

2) Look at a left-tail z-table in order to find the area of the normal curve on the left of your z-score (see picture attached). A = 0.9599

3) Multiply the area by 100 in order to find the percentile:
0.9599 × 100 = 95.99
Therefore, 95.99% of the students scored less than Jeremy.

Hence, the answer is 96%.