All categories

3 years ago

Suppose that the waiting time for an elevator at a local shopping mall is uniformly distributed from 0 to 90 seconds.

Mathematics

1 answer:

Nady [450]3 years ago

7 0

Answer:

1/3

Step-by-step explanation:

60-90 is 30 numbers, right? So it is 30/90, or 1/3

You might be interested in

A 22-foot ladder is leaning up against the side of a house. The ladder makes an angle of 77o with the ground. How far up the sid

Crank

Answer:

21.44 ft

Step-by-step explanation:

(sketch to understand)

use SOH/CAH/TOA rules to solve

sin rule is used

solve for x

(working in the picture attached)

8 0

2 years ago

Tan inverse X + tan inverse Y + tan inverse z=pie prove that X+Y+Z=xyz<br>

vfiekz [6]

Answer:

see explanation

Step-by-step explanation:

Given

$tan^{-1}$ x + $tan^{-1}$ y + $tan^{-1}$ z = π

let

$tan^{-1}$ x = A , $tan^{-1}$ y = B , $tan^{-1}$ z = C , so

x = tanA, y = tanB , z = tanC

Substituting values

A + B + C = π ( subtract C from both sides )

A + B = π - C ( take tan of both sides )

tan(A + B) = tan(π - C) = - tanC ( expand left side using addition identity for tan )

$\frac{tanA+tanB}{1-tanAtanB}$ = - tanC ( multiply both sides by 1 - tanAtanB )

tanA + tanB = - tanC( 1 - tanAtanB) ← distribute

tanA+ tanB = - tanC + tanAtanBtanC ( add tanC to both sides )

tanA + tanB + tanC = tanAtanBtanC , that is

x + y + z = xyz

3 0

3 years ago

Find the equation of the tangent line to the function f(x) = 3x3 - x + 2 at a =0

ANTONII [103]

Answer:

y=(9a^2-1)x-6a^3+2

Step-by-step explanation:

6 0

3 years ago

Holland added three decimals that made a sum of 2. One of the decimals was 0.34. What are two other decimals Holland could have

bogdanovich [222]

Using x to represent our missing values and the fact that there are two missing values gives us x + x = 2x. Because it's the sum of these numbers and 0.34, we get the equation 2x + 0.34; now we set it equal to 2, 2x + 0.34 = 2.

To solve, 1st subtract 0.34 on both sides to get 2x = 1.66. Now divide by 2 on both sides to get x = 0.83.

So your decimals are 0.34, 0.83, and 0.83

7 0

3 years ago

Read 2 more answers

4.<br> Solve by factoring: 10 = x2 – 3x,

Delvig [45]

Answer:

x=−2 or x=5

Step-by-step explanation:

5 0

3 years ago