1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
tresset_1 [31]
3 years ago
14

Y = f(x) = -3^x Find fx) when x = 0.

Mathematics
1 answer:
Vanyuwa [196]3 years ago
3 0

Answer: 1

Step-by-step explanation:

substitute x with 0 in the polynomial so we get,

-3^x

= -3^0

= 1 ( because any number raised to 0 is 1)

Hope it helps:)

You might be interested in
(( NEED HELP ))
sergiy2304 [10]

Answer:

  C)  x/2 +2y = 4

Step-by-step explanation:

Of the equations offered, only equation C has the given point as a possible solution.

___

Since the graph is not given, we don't know if the given point is on the graphed equation.

3 0
3 years ago
Solve each porportion 10/k =8/4 and tell me how you git your answer
Anettt [7]
It is only 1 proportion, and it is 1 problem.

10 8
---- = ---
X 4

1). It is 8x=40
2). Divide both sides
by 8
3). X=5

7 0
3 years ago
There are 48 students in an elementary statistics class. On the basis of years of experience, the instructor knows that the time
Stella [2.4K]

Answer:

a) 64.06% probability that he is through grading before the 11:00 P.M. TV news begins.

b) The hardness distribution is not given. But you would have to find s when n = 39, then the probability would be 1 subtracted by the pvalue of Z when X = 51.

Step-by-step explanation:

To solve this question, we need to understand the normal probability distribution and the central limit theorem.

Normal probability distribution

When the distribution is normal, we use the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

Central Limit Theorem

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean \mu and standard deviation \sigma, the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean \mu and standard deviation s = \frac{\sigma}{\sqrt{n}}.

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

For the sum of n trials, the mean is \mu*n and the standard deviation is s = \sigma\sqrt{n}

In this question:

n = 48, \mu = 48*5 = 240, s = 4\sqrt{48} = 27.71

These values are in minutes.

(a) If grading times are independent and the instructor begins grading at 6:50 P.M. and grades continuously, what is the (approximate) probability that he is through grading before the 11:00 P.M. TV news begins?

From 6:50 PM to 11 PM there are 4 hours and 10 minutes, so 4*60 + 10 = 250 minutes. This probability is the pvalue of Z when X = 250. So

Z = \frac{X - \mu}{\sigma}

By the Central Limit Theorem

Z = \frac{X - \mu}{s}

Z = \frac{250 - 240}{27.71}

Z = 0.36

Z = 0.36 has a pvalue of 0.6406

64.06% probability that he is through grading before the 11:00 P.M. TV news begins.

(b) What is the (approximate) probability that the sample mean hardness for a random sample of 39 pins is at least 51?

The hardness distribution is not given. But you would have to find s when n = 39(using the standard deviation of the population divided by the square root of 39, since it is not a sum here), then the probability would be 1 subtracted by the pvalue of Z when X = 51.

5 0
3 years ago
Write the following numbers in order from least to greatest.
loris [4]

Answer:

-5

2.45×10

2.45×103

2.45×107

Step-by-step explanation:

-5=5

2.45×10=24.5

2.45×103=252.35

2.45×107=262.15

4 0
3 years ago
ppl plz answer my question with the three picks of table of values i really need it to boost my grade up plzzzzzz
hjlf
Wheres the question lol..
7 0
2 years ago
Other questions:
  • And express delivery company charges by the The pound a package that weighs 5 pounds cost $24.50 overnight Ryan job equation to
    14·1 answer
  • Y-2>1 ON A NUMBER LINE
    6·1 answer
  • 8+12:4-6x2+5<br> How do u get the answer
    15·1 answer
  • What is the conjugate? square root of 8 - square root of 9
    11·1 answer
  • What happens when y=f(-x)?
    6·1 answer
  • Evaluate 4(x - 3) + 5x - x2 for x = 2.<br> O A. 16<br> O B. 2<br> O c. -2<br> O D. 11<br> SUB
    10·2 answers
  • 400g of rapberries and 300g of strawberries cost £7.46. 500g of strawberries cost £4.10 work out the cost of 300g of raspberries
    6·1 answer
  • laryy has 3 packets of ballons with 15 ballons in each packet. he wants to put the same number of balloons into 10 gift bags wha
    9·1 answer
  • Written as a simplified polynomial in standard form, what is the result when
    12·1 answer
  • Giving brainliest to the correct answer
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!