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alexdok [17]
3 years ago
6

Complete a, b, and c please!

Mathematics
1 answer:
tatyana61 [14]3 years ago
3 0

Answer:

a) 3308 km/hr

b) 1055 m/s

c) 3 Mach

Step-by-step explanation:

a) convert Mach 2.7 to km/hr

We need to convert Mach 2.7 to km/hr

We know that :

1 Mach = 1225 km/hr

So, multiply 2.7 with 1225 to convert 2.7 Mach into km/hr

2.7 Mach = 2.7 * 1225 km/hr

= 3307.5 km/hr

Rounding off to whole no

= 3308 km/hr

b) Mach 3.1 to meter per second

We need to convert Mach 3.1 to m/s

We know that :

1 Mach = 340.3 m/s

3.1 Mach = 3* 340.3 m/s

= 1054.93 m/s

Rounding off to whole no

= 1055 m/s

c) 3650 km/hr to Mach

We need to convert 3650 km/hr to Mach

We know that :

1 km/hr = 0.000816327 Mach

3650 km/hr = 3650 * 0.000816327 Mach

= 2.97 Mach

Rounding off to whole no

= 3 Mach

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3 years ago
A pizza delivery shop averages 20 minutes per delivery with a standard deviation of 4 minutes. What is the probability that a pi
Orlov [11]
We have the mean, μ = 20 and the standard deviation, σ = 4

X ≈ N(20, 4²)

We want P(X<15)

Standardising gives

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So now to plug in the equation.

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Now to plug things in.

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Now do the square root of 1092.

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