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3 years ago

F is an even function What does a equal?

Mathematics

1 answer:

harina [27]3 years ago

5 0

The function is even, so $f(x)=f(-x)$

Therefore $a=f(2)=f(-2)=4$

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The world's population has grown at an average rate of 1.9 percent per year since 1945. There were approximately 4 billion peopl

kkurt [141]

Answer: $f(t) = 4000000000( 1 .019)^t$

Step-by-step explanation:

Here, According to the question, The population of the world is 4 billion (approx).

Again According to the question, The world's population has grown at an average rate of 1.9 percent per year since 1945.

Therefore, after 1975 the growth rate will remains same.

Thus, the population of the world after t years,

$f(t) = 4000000000( 1+\frac{1.9}{100} )^t$ (By the formula $A = P(1+\frac{r}{100})^t$ )

⇒ $f(t) = 4000000000( 1.019 )^t$

Where 1.019 is the growth rate and 4 billion is the initial population.

6 0

3 years ago

: John wants to move from point A to point B. To avoid the pond, he must walk 36 m south and 49 m east. However, he wants to go

just olya [345]

Answer:

60.80

Step-by-step explanation:

6 0

3 years ago

The graph below shows the prices of different numbers of boots at a store: A graph is shown. The values on the x axis are 0, 2,

kobusy [5.1K]

Answer:

b=12.50p

Step-by-step explanation:

Given :

x y

0 0

2 25

4 50

6 75

8 100

10 125

To Find: Which equation can be used to determine p, the cost of b boots?

Solution :

Using point slope form Find the equation of line of the given coordinates

Let $(x_{1} , y_{1})=(0,0)$

Let $(x_{2} , y_{2})=(2,25)$

So, formula : $y-y_{1} =\frac{y_{2}- y_{1}}{x_{2}- x_{1}} *(x-x_{1})$

$y-0 =\frac{25-0}{2-0} *(x-0)$

$y= 12.50x$

Now we are given that cost of b boots is p

Since we are given that x axis is Number of Boots and y in price

So in the equation put x = b and y = p

So, equation : b=12.50p

Hence Option 4 is correct

5 0

3 years ago

Read 2 more answers

The length of a phone conversation is normally distributed with a mean of 4 minutes and a standard deviation of 0.6 minutes. Wha

Arlecino [84]

The z-score for 5 minutes is found from:
$z=\frac{X-\mu}{\sigma}
$
$z=\frac{5-4}{0.6}=1.667$
Reference to a normal distribution table shows that the cumulative probability for a z-score of 1.667 is around 0.9522.
Therefore the probability that a conversation lasts for longer than 5 minutes is:
1 - 0.9522 = 0.048 to 3 d.p.

8 0

3 years ago

Read 2 more answers

2. f(x) = √x-5<br> What is the domain and range

Dafna1 [17]

Answer:

solution - x is less then or equal to 5

Step-by-step explanation:

the domain of a function is the set of input or argument values for which the function is real and defined.

3 0

2 years ago