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3 years ago

Which of the following is a

Mathematics

1 answer:

bazaltina [42]3 years ago

7 0

B) Triangle

C) Rectangle

Step-by-step explanation:

A cross -section the intersection of a 3-dimensional figure and a plane.

A rectangular prism can form a cross-section of a rectangle or a cross-section of a triangle.

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Rectangular prism cross-sections : brainly.com/question/12619361

Keywords: possible, cross section, rectangular ,prism

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irina1246 [14]

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WILL GIVE BRAINLIEST: If the graph of 2x+3y − 6=0 is perpendicular to the graph of ax − 3y=5. What is the value of a?

Ilya [14]

Answer:

a = $\frac{9}{2}$

Step-by-step explanation:

To find the value of a, find the Slope of both the equations.

For lines to be perpendicular to each other $m_{1}m_{2} = - 1$

For line 1:

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y = $\frac{-2}{3} x$ + $\frac{6}{3}$

y = $\frac{-2}{3} x$ + 2

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$m_{2}$ = $\frac{a}{3}$

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3 years ago

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2 years ago

Last year, a person wrote 126 checks. Let the random variable x represent the number of checks he wrote in one day, and assume

Arisa [49]

Answer: The mean number of checks written per day $=0.3452$

Standard deviation $=0.5875$

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Step-by-step explanation:

Given : The total number of checks wrote by person in a year = 126

Assume that the year is not a leap year.

Then 1 year = 365 days

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Standard deviation : $\sigma=\sqrt{0.3452}=0.5875372328\approx0.5875$

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