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dimulka [17.4K]
3 years ago
9

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

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Lucy cuts 4 square with side length x in. From the corners of a 6 in by 9 in cardboard rectangle. She folds the remaining cardbo
pantera1 [17]

Answer:

V=4x^3-30x^2+54x

Step-by-step explanation:

From the question we are told that

Breath of cardboard h=6

Length of cardboard l=9

Let x be the height when fold

Generally the new rectangle is  mathematically given as

Breath h'=(6-2x)

Length l'=(9-2x)

Generally the Volume of tray is mathematically given as

V=L*B*H

V=(9-2x)*6-2x*x

V=x(4x^2-30x+54)

V=4x^3-30x^2+54x

8 0
3 years ago
Is the product of 36 squared + 4 a rational number​
BabaBlast [244]

No

Step-by-step explanation:

36 squared is 1296 plus 4 is 1300. Because you can't perfectly square 1300 it is an irrational number.

3 0
3 years ago
Triangle 304 degrees and 115 degrees work out x
Kazeer [188]

a straight line make an angle of 180° ,

so 115+y=180

y=65°

for the top part of the triangle it makes an angle of 360° , so 304+y=360

y=56

sum measure of interior angles of triangle is 180° , According to this rule (n-2)180 ; where n is the no. of sides .

so

65+56+y= 180

121+y=180

y=59( the angle next to X)

X+59=180( together they make an angle of 180)

x=121°

Hope it helps

please give brainliest

3 0
2 years ago
The length of a rectangle is 3cm longer than its width.
Contact [7]

Answer:

width=8cm

lenth=11

Step-by-step explanation:

8 0
3 years ago
Four light bulbs cost $3.20.how much does it cost to buy 14 light bulbs ?
deff fn [24]
 3.20 ÷ 4 = .80

SO

1 bulb costs $.80.


14 × .80 = 11.2 or 11.20 (its the same thing)

SO 14 light Bulbs cost $11.2 or $11.20.

Hope I helped ya!!
4 0
3 years ago
Read 2 more answers
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