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netineya [11]
3 years ago
14

In the square pyramid below, a = 12 ft and b = 10 ft.

Mathematics
2 answers:
Paul [167]3 years ago
7 0

Answer:the corret answer was 340 i just did it on edgeunity and it was correct

Step-by-step explanation:

zmey [24]3 years ago
3 0

Answer:

The answer is 340ft²

Step-by-step explanation:

From the given diagram

Height a= 12ft

Base b= 10 ft

The square pyramid when unfolded has

1. 4 triangular parts

2. A square part

Hence the surface area of the square pyramid = 4 triangular parts plus square part

We know that the area of a triangle

A=1/2b*h

A= 1/2(10*12)

A= 120/2

A= 60ft²

Area of all 4 triangle = 60*4=

240ft²

Also area of square base

A= b²

A= 10²

A=100ft²

Total surface area = 240+100= 340ft²

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Answer:

0.08065

Step-by-step explanation:

Given that in a recent study,1 2006 randomly selected US adults (age 18 or older) were asked to give the number of people in the last six months with whom you discussed matters that are important to you.

If X is random variable then X has mean 2.2 and s = 1.4

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7 0
2 years ago
In a math class with 29 students, a test was given the same day that an assignment was due. There were 22 students who passed th
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4/29 is the probability that a student who did not complete the homework passed the test.

<u>Step-by-step explanation:</u>

It is given that,

There are 29 students in a math class.

Two types of students who passed the test and are not passed the test.

The other two types of students are who completed the assignment and did not complete the assignment.

So, the given data can be formed as a table.

  • There were 22 students who passed the test.
  • There were 20 students who completed the assignment.
  • There were 18 students who passed the test and also completed the assignment.

                                         Passed the test     Not passed the test    Total

Completed assignment        18                             -                             20

Not completed assignment   x                             -                                -

Total                                       22                           -                               29

Now, you need to find the probability that a student who did not complete the homework passed the test.

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<u>To find the no.of students completed assignment passed the test :</u>

Let 'x' is the no.of students completed assignment passed the test.

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⇒ x = 22 - 18

⇒ x = 4

∴ P(students completed assignment passed the test) = 4 / 29.

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3 years ago
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Answer:

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