Find the total surface are of a cone having a diameter of base 8cm and a slant height of 12cm

Mathematics

2 answers:

ankoles [38]3 years ago

6 0

It is 4cm like bro I am just doing my thing I like apples and trees and stuff

Veseljchak [2.6K]3 years ago

3 0

It’s 4cm i think but it should be 4cm doe cause of the

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adell [148]

Answer:

$x + y = 1042$

$1.5x + 0.75y = 1140$

Step-by-step explanation:

This question can be solved by a system of equations.

I am going to say that:

x is the number of regular fares paid.

y is the number of reduced fares paid.

1,042 total fares were paid

This means that $x + y = 1042$

A city bus collected $1,140 in fares on a given day. The regular fare is $1.50, and the reduced fare is $0.75.

This means that:

$1.5x + 0.75y = 1140$

System of equations:

The system of equations is:

$x + y = 1042$

$1.5x + 0.75y = 1140$

4 0

3 years ago

An insurance company crashed four cars in succession at 5 miles per hour. The cost of repair for each of the four crashes was $

babunello [35]

Note that Range = Max – Min.
In this case, Max = 452452, Min = 221221.
Hence, Range = 452452 – 221221 = 228230.

Sample Variance:
$s^2= \frac{1}{n-1} (x-\bar{x})^2$

where n = 4,
$\bar{x}= \frac{1}{4}( 419419 + 452452+ 404404 + 221221)=374374$
Hence
$s^2= \frac{1}{4-1}[( 419419 - 374374)^2 + (452452-374374)^2+\\
(404404-374374)^2+ (221221-374374)^2)]\\
= 1.0828 \times 10^{10}
$
Then standard deviation = $s=\sqrt{1.0828 \times10^{10}}=104055.864$