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Simora [160]
3 years ago
11

F(-2)=-2²+3(-2)-2 find f(-2)

Mathematics
2 answers:
Serjik [45]3 years ago
8 0
First, solve the exponent. Then multiply 3 and -2 to get -6. Lastly, combine like terms to get the final answer as -12.

olga_2 [115]3 years ago
5 0

Answer:

F(-2)=-2²+3(-2)-2=4+-6×-2=4+12=16

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Write a number story to fit this number sentence. 20- (3x6) =2​
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Answer: Bonnie went to a meadow to pick flowers there was 20 flowers in one area and had decided to pick 18 of the flowers, how many flowers are left?

Step-by-step explanation: I don't know.... Just something random, hope I was able to help!

8 0
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If a city that currently has a population of 1000 triples in size every 8 years, what will the population be in 24 years? Is the
Brilliant_brown [7]
For this case we have a function of the form:
 y = A * (b) ^ t
 Where,
 A: initial amount
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 t: time
 Substituting values we have:
 y = 1000 * (3) ^ ((1/8) * t)
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7 0
3 years ago
Read 2 more answers
What is the cube of 6
boyakko [2]
The cube of 6 is 216
8 0
3 years ago
Read 2 more answers
PLEASE PLEASE HELP
marta [7]

Answer:

Approximately 3 grams left.

Step-by-step explanation:

We will utilize the standard form of an exponential function, given by:

f(t)=a(r)^t

In the case of half-life, our rate <em>r</em> will be 1/2. This is because 1/2 or 50% will be left after <em>t </em>half-lives.

Our initial amount <em>a </em>is 185 grams.

So, by substitution, we have:

\displaystyle f(t)=185\big(\frac{1}{2}\big)^t

Where <em>f(t)</em> denotes the amount of grams left after <em>t</em> half-lives.

We want to find the amount left after 6 half-lives. Therefore, <em>t </em>= 6. Then using our function, we acquire:

\displaystyle f(6)=185\big(\frac{1}{2}\big)^6

Evaluate:

\displaystyle f(6)=185\big(\frac{1}{64}\big)\approx2.89\approx 3

So, after six half-lives, there will be approximately 3 grams left.

3 0
3 years ago
write and solve this equation: Samantha is one year less than twice her brother Jack’s age. If the sum of their ages is 41, how
Rufina [12.5K]

Answer:

Samantha's age = 27 years

Step-by-step explanation:

  • Let Jack's age be = x

As Samantha is one year less than twice her brother Jack’s age.

  • So Samantha's age = 2x-1

As the sum of their ages is 41.

Thus, the equation become

x+2x-1 = 41

3x-1 = 41

3x = 42

Dividing both sides by 3

x = 14

It indicates that Jack's age = 14 years

Therefore,

Samantha's age = 2x-1 = 2(14)-1 = 27 years

3 0
3 years ago
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