MATHEMATICS HIGH SCHOOL

What are two contributions to math that Leonardo Fibonacci made

Answers

Answer 1
Answer: Fibonacci is famous for his contributions to number theory.

In his book, Liber abaci he introduce the Hindu-Arabic place-valued decimal systems and the use of Arabic Numerals  into Europe.He introduced the bar we use in fractions, previous to this, the numerator has quotations around it. The square root notation is also is Fibonacci method.

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By the congruent supplementary theorem, what can you conclude

Answers

Short Answer Only B is true.
Reasoning
A
A is not True. CBG is not equal to DBG. They are supplementary but not equal.

B 
B is correct.

C
CBG = DBF are given as equal. It is not necessarily true that they are supplementary. That would be true only if they were both 90o

D
The two angles are equal, but they are not supplementary. They would be only if both were 90o which is shown not to be the case.

Answer:

The second option is what we can conclude.

Step-by-step explanation:

Angles FBC and DBG are congruent also because they are Opposite Angles by the Vertex, we can see trough vertex B, and neither angles have a common segment.

Suppose that the amount of algae in a pond doubles every 4 hours. If the pond initially contains 90 pounds of algae, how much algae will be in the pond after 12 hours?-720 pounds
-360 pounds
-1440 pounds
-114 pounds

Answers

After 12 hours the pound would have 720 pounds of algae.

My age is 13 and i was born in 2006 and my brother was born in 2004 how old he.is​

Answers

15 is the age for your brother

Hope this helped ♥︎

A rectangular pool measures 10m by 5m. A deck, of uniform width, is to be built all the way around the pool such that the total area of the pool and deck will be126m2 . Set up and solve a quadratic equation to determine the width of the deck.

Answers

Answer:

The width of the deck is 2m .

Step-by-step explanation:

Let the width of the pool be represented by w. As stated in the problem a deck of uniform width is to be built so the total width of the pool and deck will be w+w = 2w.

Now the total dimensions can be taken as

10m+ 2w and 5m + 2w of both the pool and deck.

Area = length * breadth

126m ²= (10m+ 2w) ( 5m + 2w )

126= 50 + 30 w+ 4w²

0= 50 -126+ 30 w+ 4w²

0 = 30 w+ 4w²- 76

Taking 2 as common

0= 2( 15 w+ 2w² - 38)

2w²+ 15 w - 38= 0

The above equation is the quadratic equation and can be solved as follows.

a= 2 , b= 15 and c= -38

b= -b±√b²- 4ac/2a

Putting the values

b= - 15±√15²- 4( 2)(-38)/2(2)

b= - 15± 23/4

b= - 38/4 or 8/4

b= 2 m

The width cannot be negative so we ignore the negative value

The width of the deck is 2m .

The can be checked by putting the value in the original equation.

126m ²= (10m+ 2w) ( 5m + 2w )

126m ²= (10m+ 2(2)) ( 5m + 2(2) )

126m ²= (10m+ 4) ( 5m + 4 )

126m ²= 14*9

126m ²= 126m ²

Can you please help me and quick​

Answers

Answer:

2

Step-by-step explanation:

anything to 0th power is 1

Answer:

C

Step-by-step explanation:

3. Teesha is in french club. there are 19 students in the club. The french teacher will pick two students at random to guide visiting students from France. What is the probability that Teesha will not be picked up as a guide. A. 2/19
B. 17/19
C. 1/18
D. 18/19

Answers

I think the answer is D! Hope that helps! Let me know if I’m wrong tho!!!
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