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mafiozo [28]
3 years ago
10

What is the answer to this question?

Mathematics
1 answer:
sukhopar [10]3 years ago
8 0
First plug in f and g:
3 x^{2} +1-  [1-x]
Then distribute 3 x^{2} +1-1+x
Combine like terms
3 x^{2} +x
Now plug in 2 for x
3( 2^{2} )+2
3(4)+2=12+2=14

Hope that helps
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URGENT. Find f(3) if<br> f(x)=x^3 + 2x^2-x-1
KonstantinChe [14]

Answer:

41

Step-by-step explanation:

Jus replace x with 3 and put it in a calculator.

6 0
3 years ago
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Gia is painting her wall. 1 liter of paint can cover 10 square meters. She has a rectangular wall that
garik1379 [7]
5*4 equals 20 so her wall is 20 square meters
Given that one litre can cover 10 square meters, she needs 2 litres of paint to cover the wall
7 0
3 years ago
Lacy draws a diamond from a standard deck of 52 cards. Without replacing the first card, she then proceeds to draw a second card
Viktor [21]

Answer:

a) i) No

ii) Probability of drawing a diamond and then spade without replacement is 0.0637.

b) i) Yes

ii) Probability of drawing a diamond and then spade with replacement is 0.0625

Step-by-step explanation:

Part a) Without replacement:

i) Are these events independent?

No, because the both events are dependent. because a card taken out of the deck is not replaced back before taking out the other card so the chances of event occur change.

ii) Determine the probability of drawing a diamond and then a spade without replacement.

Probability of drawing a diamond and then spade = (Probability of drawing a diamond) * (Probability of drawing a spade)

Probability of drawing a diamond :

Total cards in deck = 52

Diamonds = 13

Probability of drawing a diamond  = 13/52

Probability of drawing a spade:

Total cards in deck after taking diamond = 52 -1 =51

Spades = 13

Probability of drawing a spade  = 13/51

Probability of drawing a diamond and then spade = 13/52 * 13/51

= 169/2652

=0.0637

So, Probability of drawing a diamond and then spade without replacement  is 0.0637

Part b) With replacements

i) Are these events independent?

Input Yes or No:

Yes, these events are independent because a card taken out of the deck is replaced back before taking out the other card so the chances of event occur doesn't change.

ii) Determine the probability of drawing a diamond and then a spade with replacement.

Probability of drawing a diamond and then spade = (Probability of drawing a diamond) * (Probability of drawing a spade)

Probability of drawing a diamond :

Total cards in deck = 52

Diamonds = 13

Probability of drawing a diamond  = 13/52

Probability of drawing a spade:

Total cards in deck after replacing diamond = 52

Spades = 13

Probability of drawing a spade  = 13/52

Probability of drawing a diamond and then spade = 13/52 * 13/52

= 169/2704

=0.0625

So, Probability of drawing a diamond and then spade with replacement is 0.0625

7 0
3 years ago
Omar had 7goldfish in his fish tank. He has 3 fewer redfish than goldfish in his tank. Omar also has 8 more black fish than gold
Mazyrski [523]

Answer:

Omar has 27 fish in all.

Step-by-step explanation:

Goldfish: OOOOOOO

Redfish: 7-3=4 OOOO

Black fish: 7+8=15 OOOOOOOOOOOOOOO

Add all of those and you get this many:

OOOOOOOOOOOOOOOOOOOOOOOOOO=27

Hope this helped lots and lots,

sincerely, me

7 0
3 years ago
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Aiden bought some noteboks and book covers for the upcoming school year.He bought a total of 13 items.Each notebook costs $1.37,
NARA [144]
Answer: Aiden bought 8 notebooks and 5 covers.

This is a system of equations problem. To solve this, we have to write 2 different equations and then solve them.

Our equations are:

x + y = 13
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Where x is the number of notebooks and y is the number of covers.

To solve these equations, you can use anyone of these methods:
1) Graphing
2) Substitution
3) Elimination

The easiest way would be to graph them with a graphing calculator and find the point of intersection.
7 0
3 years ago
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