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3 years ago

Write an expression for the calculation double the number 15 and then add 25 divided by 5

Mathematics

2 answers:

IRISSAK [1]3 years ago

8 0

Double 15 that will make 30 then add 25 then that will be 55. now divide 55 by 5 = 11

Zielflug [23.3K]3 years ago

7 0

(30 + 25) ÷ 5 =
55 ÷ 5 = 11

So the answer is 11

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A submarine was located 800 feet below sea level. There is a drone

fgiga [73]

Answer:

1,050

Step-by-step explanation:

7 0

4 years ago

Read 2 more answers

2. Suppose that a particular medical procedure has a cost that is approximately normally distributed with a mean of $19,800 and

Lina20 [59]

Answer:

a) 0.5085

b) -1.6551

c) 0.8103834

Step-by-step explanation:

Data provided in the question:

Mean = $19,800

Standard deviation, s = $2,900

Now,

z score = [ X - Mean ] ÷ s

a) The procedure costs between $18,000 and $22,000

For X = $22,000

z-score = [ $22,000 - $19,800 ] ÷ $2,900

= 0.7586

For X = $18,000

z-score = [ $18,000 - $19,800 ] ÷ $2,900

= -0.62069

P(procedure costs between $18,000 and $22,000)

= P(z < 0.7586) - P( z < -0.62069)

= 0.7759541 - 0.2674018 [ P value from standard z table ]

= 0.5085

b) The procedure costs less than $15,000

For X = $15,000

z-score = [ $15,000 - $19,800 ] ÷ $2,900

= -1.6551

thus,

The procedure costs less than $15,000

P (z < -1.655172 )

= 0.0489448 [ P value from standard z table ]

c) The procedure costs more than $17,250

z-score = [ $17,250 - $19,800 ] ÷ $2,900

= -0.87931

thus,

The procedure costs more than $17,250.

P (z > -0.87931 ) = 0.8103834

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Answer:

see attached

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3 years ago

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It should be D. Because the equation is 2(width+ height + length

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