How many 10 digit phone numbers are possible with area code of 416?

Mathematics

1 answer:

iren2701 [21]3 years ago

8 0

Answer:

Eleven digits for toll calls became standard in all of North America by the end of 1994 to allow introduction of "interchangeable NPA codes" – area codes that did not have a 0 or 1 as the middle digit and could therefore be confused with the central office code – after January 1, 1995.

Step-by-step explanation:

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Law of cosines.Anyone good in Trigonometry?

marin [14]

Answer:

$c=11.8\ units$

Step-by-step explanation:

we know that

The formula of law of cosines is equal to

$c^2=a^2+b^2-2(a)(b)cos(C)$

where

a, b and c are sides. C is the angle opposite side c

In this problem we have

$a=3\ units\\b=10\ units$

$C=120^o$

substitute the given values

$c^2=3^2+10^2-2(3)(10)cos(120^o)$

$c^2=109-(60)cos(120^o)$

$c^2=109-(60)(-0.5))$

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$c^2=139$

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3 0

3 years ago

The stem and leaf plot shows the temperatures of patients who registered at a clinic one day. How many patients registered at th

Alex Ar [27]

Answer : 24

Explanation : As the attachment when referred for finding the number of patients registered. we have to just count the right integer part of the given plot.

As the plot describes the temperature of the patients on the left side and the number of times it was repeated.

So, the number of values is given by the number of leaves, one has to simply have to count the digits that are there on the right part of the plot

Which comes to the count of 24.