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Ann [662]
2 years ago
14

What is the answer too x^2 + 2x

Mathematics
1 answer:
prisoha [69]2 years ago
3 0

Answer:

x=0  and x=−2

Step-by-step explanation:

Explanation:

You can factor x2+2x=0

as: x(x2)=0

Now, we can solve each term for 0:x=0 - no other work needed,

and

x+2=0

x+2−2=0−2

x+0−2x=−2

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20 US Liquid gallons = 75.7082 litres 
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4 years ago
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A ball is dropped from a height of 9 m. Each time it strikes the ground it bounces vertically to a height that is 2/3 of the pre
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Answer:

The answer i 9

Step-by-step explanation:

If the ball bounces 2/3 of the height of 9, and a 1/3 of 9 is 3, then 6 is the answer.

6 0
2 years ago
Joel made a number line showing the multiples of 3/5
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Well t would be 6/10 9/15 and u just add 3 to the numerator and 5 to the denominator
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4 years ago
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in the game of hearts, four players are each dealt 13 cards from a deck of 52. is this a function? if so, what are the domain an
skelet666 [1.2K]

Based on the fact the game of hearts, four players are each dealt 13 cards from a deck of 52

  • The domain is the deck of 52 cards
  • codomain is 4 players
  • function, f(k) maps a card to each player
  • It is surjective

This is further explained below.

<h3>What is a surjective Function?</h3>

A surjective function is a kind of function that exists in mathematics that ensures that any element y may be transferred to element x in such a way that f(x) equals y.

To put it another way, each element that makes up the function's codomain is the mirror image of at least one element that makes up the domain.

Generally, function, f(k) maps a card to each player

And since each player is dealt 13 cards st 13 of the cards are mapped to each player.

It is a function as one card is mapped to one and only one player.

The function is not injective because 13 cards 1 are mapped to one player so it is a many-one function but the injective function does not map two elements to a common clement.

In conclusion, It is surjective as each player is dealt 13 cards. the function is not injective hence rot bijective.

Read more about surjective

brainly.com/question/13423972

#SPJ1

5 0
1 year ago
The response to a question has three alternatives: A, B, and C. A sample of 120 responses provides 60 A, 24 B, and 36 C. Show th
In-s [12.5K]

Answer:

See the table and the digure attached

Step-by-step explanation:

For this case we can create the following table to express the information:

Category   Frequency    Rel. Frequency

_______________________________

    A                 60                 0.5 (50%)

    B                 24                 0.2 (20%)

    C                 36                 0.3 (30%)

_______________________________

 Total              120                1.0  (100%)

The values for the relative frequencies are calculated like this:

r_A= \frac{60}{120}=0.5

r_B= \frac{24}{120}=0.2

r_C= \frac{36}{120}=0.3

And as we can see on the figure attached we have the distributions required

8 0
4 years ago
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