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avanturin [10]
3 years ago
15

Pls help WILL PICK BRAINLIEST!

Mathematics
1 answer:
Romashka-Z-Leto [24]3 years ago
7 0

Answer:

D. (-14)+(-8)

Step-by-step explanation

Adding to negatives is the same as subtracting 2 positives

-14- 8= 22

-14+(-8)= 22

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A pyramid has a base area of 44 cm² and a height of 12.6 cm.
BabaBlast [244]

Answer: Volume=184.8 cm³

Step-by-step explanation:  Volume of pyramid = \frac{Bh}{3}

where B=area of base=44 cm²

and h=height of pyramid=12.6 cm

         volume=44×12.6/3

                      =184.8 cm³

8 0
3 years ago
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In a small chess tournament, 20 matches were played. Find out how many people were involved if it is known that each participant
Nina [5.8K]

Answer:

<em>5</em><em> players participated in the tournament.</em>

Step-by-step explanation:

In a small chess tournament, 20 matches were played.

Let us assume that n number of players participated in the tournament

As in each game 2 players play, so the number of ways they can play is,

=\ ^nC_2

As they played 2 games with every other participant in the tournament.

So the total number of games is,

=\ 2\times ^nC_2

But it is given to be 20, so

\Rightarrow \ 2\times ^nC_2=20

\Rightarrow \ ^nC_2=10

\Rightarrow \dfrac{n!}{2!(n-2)!}=10

\Rightarrow \dfrac{n(n-1)}{2}=10

\Rightarrow {n(n-1)=20

As 5\times 4=20, so we get n=5.

Therefore, 5 players participated in the tournament.

5 0
3 years ago
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How much do you earn per week if your annual salary is $40,716?
Sidana [21]

Answer:

783

Step-by-step explanation:

There are 52 weeks in a year. Divide 40,716/52 and you get $783 weekly.

4 0
3 years ago
What is the value of b
n200080 [17]

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b+104+136 =360

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7 0
3 years ago
Does the equation y = 5(2.3)* model exponential growth, exponential decay or neither?
maria [59]
Exponential growth because maths is good
3 0
3 years ago
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