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3 years ago

As it may not be much, It's the best i can do, with such little wealth, take my earning, consider thy points as your spoils.

Mathematics

2 answers:

Leya [2.2K]3 years ago

7 0

Answer:

Thank you!

Step-by-step explanation:

Have a nice day/night lol

nekit [7.7K]3 years ago

3 0

Answer:

1^2 +68=69

Step-by-step explanation:

by sqrt rooting 2 by 1 is 1

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1. Bob tried to answer the following question by finding the missing angle and rounding the answer to the nearest degree.

iren2701 [21]

Answer:

Part 1)

Bob's mistake was to have used the cosine instead of the sine

The measure of the missing angle is $53.13\°$

Part 2) The surface area of the pyramid is $288\ cm^{2}$

Step-by-step explanation:

Part 1)

Let

x----> the missing angle

we know that

In the right triangle o the figure

The sine of angle x is equal to divide the opposite side angle x to the hypotenuse of the right triangle

$sin(x)=\frac{16}{20}$

$x=arcsin(\frac{16}{20})=53.13\°$

Bob's mistake was to have used the cosine instead of the sine

Part 2) we know that

The surface area of the square pyramid is equal to the area of the square base plus the area of its four lateral triangular faces

$SA=b^{2}+4[\frac{1}{2}(b)(h)]$

where

b is the length side of the square

h is the height of the triangular lateral face

In this problem

$h=b/2$ -------> by an 45° angle

$b=2h$

$sin(45\°)=\frac{h}{6\sqrt{2}}$

$h=6\sqrt{2}(sin(45\°))=6\ cm$

Find the value of b

$b=2(6)=12\ cm$

Find the surface area

$SA=12^{2}+4[\frac{1}{2}(12)(6)]=288\ cm^{2}$

3 0

3 years ago

How do you find the average rate change from x = -1 to x = 3

Marrrta [24]

Well to begin, you'll need a graph but you have to do:

y2-y1

---------

x2-x1

(Which is the average rate of change formula.)

In order to find your "y" you look for your x on the graph the move either direction until you touch the graph. Hope this helps.. :)

8 0

3 years ago

The political opinion organization hired 100 new employees, which increases its staff by 40%. What was the original number of em

natulia [17]

Answer:

40(?)

I don't remember exactly if that's correct, but I hope it's right! Comment if you want the explanation

7 0

2 years ago

Read 2 more answers

There is a famous irrational number called Euler's number, symbolized with an e. Like π , its decimal fo rm never ends or repeat

defon

$\sqrt{7} < e < \sqrt{8}=2\sqrt{2}$

3 0

3 years ago

Read 2 more answers

Hilary can ride her bike 16.43 mph. How far can she ride in three hours?

Lera25 [3.4K]

Answer:

49.29

Step-by-step explanation:

16.43x3=49.29

4 0

2 years ago