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2 years ago

Calculators cannot display repeating decimals. Calculators always round.

Mathematics

1 answer:

andriy [413]2 years ago

7 0

Answer:

1. 0.333 No

2. 0.3 or 0.300 Yes

3. 0.667 No

Step-by-step explanation:

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The weight distribution of parcels sent in a certain manner is normal with meanvalue 12 pounds and standard deviation 3.5 pounds

tino4ka555 [31]

Answer:

The parcel with weight less than 20.14 pounds are 99% of all parcels under the surcharge weight.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 12 pounds

Standard Deviation, σ = 3.5 pounds

We are given that the distribution of weights is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

We have to find the value of x such that the probability is 0.99

$P( X < x) = P( z < \displaystyle\frac{x - 12}{3.5})=0.99$

Calculation the value from standard normal z table, we have,

$\displaystyle\frac{x - 12}{3.5} = 2.326\\\\x = 20.141\approx 20.14$

Thus, parcel with weight less than 20.14 pounds are 99% of all parcels under the surcharge weight.

7 0

2 years ago

The weight of an adult blue whale is 9 × 104 kilograms; the weight of an elephant is 3 × 103 kilograms. How many times heavier i

kozerog [31]

To determine how many times one variable to another variable, we get the ratio of both by dividing the values. For this case, we divide the weight of whale and the weight of the elephant.

9 × 10^4 kilograms / <span>3 × 10^3 kilograms = 30 <------ OPTION 1</span>

7 0

3 years ago

The derivative of a function f(x)=2-7sinx is--------

Setler [38]

Answer: -7cos(x)

Step-by-step explanation:

d/dx (f(x))= -7cos(x)

7 0

1 year ago

Marlon took a total of 12 pages of notes during 3 hours of class. After attending 4 hours of class, how many total pages of note

elena-14-01-66 [18.8K]

I think it’s 28 I’m not sure

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2 years ago

How do you prove similarity in math?

ra1l [238]

Answer:

AA (Angle-Angle): If triangles have two of the same angles, then the triangles are similar. SAS (Side-Angle-Side): If triangles have two pairs of proportional sides and equal included angles, then the triangles are similar.

Step-by-step explanation:

3 0

3 months ago