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
hodyreva [135]
2 years ago
6

If f(x) = 1-x^2+x^3, then f(-1)=

Mathematics
1 answer:
Yuri [45]2 years ago
7 0

Answer: -1

Step-by-step explanation:

1-(-1^2)+(-1^3) = 1-1+(-1)= -1

You might be interested in
Last year the attendance at the homecoming football game was 300.This year 360 people attended.What was the percent increase fro
AlexFokin [52]
The percent increase is 20%.
8 0
3 years ago
Read 2 more answers
What is the multiplicative rate of change of the function?
AleksandrR [38]

- Answer:-The multiplicative rate of change for the exponential function =3. Explanation:- The exponential function is given by y=Ab^x. , where A

Step-by-step explanation:

7 0
3 years ago
The number of major earthquakes in a year is approximately normally distributed with a mean of 20.8 and a standard deviation of
SCORPION-xisa [38]

Answer:

a) 51.60% probability that in a given year there will be less than 21 earthquakes.

b) 49.35% probability that in a given year there will be between 18 and 23 earthquakes.

Step-by-step explanation:

Problems of normally distributed samples can be solved using 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.

In this problem, we have that:

\mu = 20.8, \sigma = 4.5

a) Find the probability that in a given year there will be less than 21 earthquakes.

This is the pvalue of Z when X = 21. So

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

Z = \frac{21 - 20.8}{4.5}

Z = 0.04

Z = 0.04 has a pvalue of 0.5160.

So there is a 51.60% probability that in a given year there will be less than 21 earthquakes.

b) Find the probability that in a given year there will be between 18 and 23 earthquakes.

This is the pvalue of Z when X = 23 subtracted by the pvalue of Z when X = 18. So:

X = 23

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

Z = \frac{23 - 20.8}{4.5}

Z = 0.71

Z = 0.71 has a pvalue of 0.7611

X = 18

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

Z = \frac{18 - 20.8}{4.5}

Z = -0.62

Z = -0.62 has a pvalue of 0.2676

So there is a 0.7611 - 0.2676 = 0.4935 = 49.35% probability that in a given year there will be between 18 and 23 earthquakes.

5 0
3 years ago
PLZ HELP ME PLEASE!!!!... WILL GIVE BRAINLIEST. THANKYOU!
belka [17]

Answer:

1) 0.5

2)-2

3)-23

Step-by-step explanation:

1) -3×1=-3

-3+2.5= 0.5

2) -3×1.5=-4.5

-4.5+2.5= -2

3) -3×8.5=-25.5

-25.5+2.5=-23

6 0
3 years ago
When a number is divided by 10 the quotient is 53 what is the number​
LuckyWell [14K]

Answer:

530

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
Other questions:
  • A circle has a diameter of 28 ft. What is the circumference?
    13·1 answer
  • An exercise machine with an original selling price of $1,275 is marked down by 20%. What is the sale price of the exercise machi
    10·1 answer
  • Increase £680 by 15%
    8·2 answers
  • Use distributive property to express 32 + 64
    14·2 answers
  • 1/4 + -21/8 in fraction form marking brainley quick please
    5·1 answer
  • The circumference of a circle can be found using the formula C = 2r.
    15·2 answers
  • Combining like terms of 10x - 3+ 11 - 2x + 3x, simplifies the expression to​
    12·2 answers
  • Which equation, written in slope-intercept form, matches the graph below?
    9·1 answer
  • I don’t understand this can you explain and answer it!!!
    13·1 answer
  • Given the function below find f(7) f(x)= -x^2+9x
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!