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3 years ago

Simplify 4.2^-3 • 5.1^2 • 4.2^4 • 5.1^3

Mathematics

2 answers:

Vinil7 [7]3 years ago

6 0

Answer:

0.013497

Step-by-step explanation:

rewona [7]3 years ago

3 0

Answer:

Hope this helps

Step-by-step explanation:

Simplify the expression.

14491.060542

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GREYUIT [131]

Answer:

Step-by-step explanation:

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3 years ago

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What are the answers for these and the coordinates

anastassius [24]

-10y And = -2 so it would be 12x + (-10y) = -2

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3 years ago

Metal fatigue causes cracks to appear on the skin of older aircraft. Assume that for a certain year and model of aircraft the av

lyudmila [28]

Answer: the probability that we observe 4 cracks when inspecting a 3 m2 section is 0.034

Step-by-step explanation:

The formula for poisson distribution is expressed as

P(x = r) = (e^- µ × µ^r)/r!

Where

µ represents the mean of the theoretical distribution.

r = x represents the number of successes of the event(cracks).

From the information given,

µ = 3 cracks per 1 m² section

It means that for a 3 m² section of the aircraft, the average number of cracks would be 9

the probability that we observe 4 cracks when inspecting a 3 m2 section would be

P(x = 4) = (e^- 9 × 9^4)/4!

P(x = 4) = 0.034

8 0

3 years ago

Randy is making a xylophone. So far, he has bars that are 1.75, 1 and 7 over 12 feet, and 1 and 2 over 3 feet. What is the lengt

Y_Kistochka [10]

Length of first bar = 1.75.

Length of second bar = $1\frac{7}{12}$

Length of third bar = $1\frac{2}{3}$ .

Let us convert $1\frac{7}{12} \ and \ 1\frac{2}{3} \ in \ decimals.$

$\frac{7}{12}=0.5833$

Therefore, $1\frac{7}{12} = 1.5833$

$1\frac{2}{3} = 1.667$

<em>We can see that 1.75 is the longest out of 1.5833 and 1.667.</em>

<h3>Therefore, length of longest bar is 1.75 feet.</h3>

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3 years ago

Gas mileage actually varies slightly with the driving speed of a car (as well as with highway vs. city driving). Suppose your

natima [27]

Answer:

Step-by-step explanation:

Suppose the car mileage actually varies slightly with the driving speed of the car

Suppose your car averages 26 miles per gallon on the highway if your average speed is 45 miles per hour,

and it averages 18 miles per gallon on the highway if your average speed is 65 miles per hour.

The driving time for a 2500-mile trip if you drive at an average speed of 54 miles per hour

$= \frac{Distance}{Speed} = \frac{2500 }{45} \\\\= 55.56 hours.$

The driving time for a 2500-mile trip if you drive at an average speed of 65 miles per hour

$= \frac{Distance}{Speed} = \frac{2500 }{65} \\\\= 38.46 hours.$

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3 years ago