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
lapo4ka [179]
3 years ago
8

Evaluate ƒ(x) = –x^2 – 4 for x = –3.

Mathematics
1 answer:
Stels [109]3 years ago
5 0

Answer:

-13

Step-by-step explanation:

-(-3)^2= -9

-9-4= -13

You might be interested in
Howard invested $5,000 in Certificate of Deposit (CD) that pays 3.75% interest. compounded weekly. What is the value of the CD a
blsea [12.9K]

Answer:

The value of the CD at the end of the 4 years is $5,808.86.

Step-by-step explanation:

Compound interest:

The compound interest formula is given by:

A(t) = P(1 + \frac{r}{n})^{nt}

Where A(t) is the amount of money after t years, P is the principal(the initial sum of money), r is the interest rate(as a decimal value), n is the number of times that interest is compounded per year and t is the time in years for which the money is invested or borrowed.

Howard invested $5,000 in Certificate of Deposit (CD) that pays 3.75% interest.

This means that P = 5000, r = 0.0375

Compounded weekly

An year has 52 weeks, so n = 52

Then

A(t) = P(1 + \frac{r}{n})^{nt}

A(t) = 5000(1 + \frac{0.0375}{52})^{52t}

What is the value of the CD at the end of the 4 years?

This is A(4). So

A(4) = 5000(1 + \frac{0.0375}{52})^{52*4} = 5808.86

The value of the CD at the end of the 4 years is $5,808.86.

6 0
3 years ago
It is advertised that the average braking distance for a small car traveling at 75 miles per hour equals 124 feet. A transportat
Morgarella [4.7K]

Answer:

z=\frac{112-124}{\frac{22}{\sqrt{37}}}=-3.318  

The p value would be given by this probability:

p_v =2*P(z  

Since the p value is a very small value at any significance level used we can reject the null hypothesis and we can conclude that the true mean for this case is different from 124 ft

Step-by-step explanation:

Data given and notation  

\bar X=112 represent the sample mean

\sigma =22 represent the population standard deviation  

n=37 sample size  

\mu_o =124 represent the value that we want to test  

z would represent the statistic (variable of interest)  

p_v represent the p value

Hypothesis to test

We want to check the following system of hypothesis:

Null hypothesis: \mu = 124  

Alternative hypothesis :\mu \neq 124  

The statistic is given by:

z=\frac{\bar X-\mu_o}{\frac{\sigma}{\sqrt{n}}} (1)  

Replacing the info given we got:

z=\frac{112-124}{\frac{22}{\sqrt{37}}}=-3.318  

The p value would be given by this probability:

p_v =2*P(z  

Since the p value is a very small value at any significance level used we can reject the null hypothesis and we can conclude that the true mean for this case is different from 124 ft

6 0
4 years ago
Choose the scientific notation that best represents the standard notation given. 0.000000000143 g
Sphinxa [80]
In order to write the given number in Scientific Notation we have to move the decimal digit 10 places to the right.

Moving decimal to the right means, the exponent of 10 will be negative when the number is written in scientific notation.

Since, we have to move the decimal by 10 digits, the exponent of 10 will be -10.

Therefore, the number written in scientific notation will be:

0.000000000143=1.43*10^{-10}
3 0
3 years ago
WILL MARK THE BRAINLEIST Find the surface of the rectangle prism ,show all of your work
trapecia [35]
The answer is 108 as your surface area.

Work:
To find surface area, you find the area of each side and add it all together. For the bottom and the top sides, it’s 6 x 3 which equals to 18. 18 + 18 = 36. Then, 3 x 4 = 12. 12 + 12 = 24. 6 x 4 = 24. 24 + 24 = 48. Then, you add it all together which equals to 108. If what I did doesn’t makes sense, I’ll explain it more detailed here.

So, I found the area of the bottom side and multiplied it by 2 to represent the top and bottom sides. Then, I did the same thing for the other sides if that makes sense. I’m really sorry if I’m not explaining it well. I’m better at doing the work in my head and not on paper or explaining it to other people.

Anyway, hope this helps!
3 0
3 years ago
Mateo has 5 pints of cherries . He dividez them into 1/4 pint servings. How many servings doez he make?
Savatey [412]

Answer:

1.25 OR 1 1/4

Step-by-step explanation:

7 0
3 years ago
Other questions:
  • The sum of two numbers is 981. One of the numbers is 703. What is the other number?
    12·1 answer
  • the length of a rectangle is 9 inches more than three times the width. the perimeter is 98 inches. find the length and width
    9·1 answer
  • When the x is slove and you have to slove for the y i got how to do it but i don't know which one am i sloving for in the equati
    15·1 answer
  • Is this sequence arithmetic, geometric, or neither?
    12·2 answers
  • What is 1.2 simplified
    15·1 answer
  • Help!<br> It's about and ratios and porportions
    10·2 answers
  • What is the minimum price<br> $28, $36, $44, $59, $66, $71, $180
    15·2 answers
  • Which measurement is most accurate to describe the amount of water a teaspoon could hold?
    13·1 answer
  • The price of a 7-minute phone call is $1.05. What is the price of a 19-minute phone call
    7·1 answer
  • The table shows a linear function
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!