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
WINSTONCH [101]
2 years ago
9

Some pleaseeeeee help!! f(x) = 3x + 4 + 2 g(x) = 4 Find (f +g)(x).

Mathematics
1 answer:
Cerrena [4.2K]2 years ago
5 0

Answer:

3x^2 + 10x

Step-by-step explanation:

If u wrote it correctly it would be ((x+4+2)+4)(x)

You might be interested in
A car rental company charges a $50 flat fee and an additional $20 per day. A second company also
aivan3 [116]

The difference between the flat fees of the two companies is $20

8 0
2 years ago
Factor: x^2-y^2-2y-1
inn [45]

x^2 - y^2 - 2y - 1
x^2 - (y+1)^2
4 0
3 years ago
Read 2 more answers
Can please help!
sukhopar [10]
Answer:
equation is: width = area / length
width = 62.5 yd

Explanation:
For the first rectangle:
We have:
length = 75 yd and width = 60 yd
Therefore:
area = length * width 
area = 75 * 60
area = 4500 yd²

For the second rectangle:
We have:
area = area of first rectangle = 4500 yd²
length = 72 yd
area = length * width
width = area / length ............> The required equation
width = 4500 / 72
width = 62.5 yd

Hope this helps :)
5 0
3 years ago
Assume that females have pulse rates that are normally distributed with a mean of μ=73.0 beats per minute and a standard deviati
Gennadij [26K]

Answer:

a. the probability that her pulse rate is less than 76 beats per minute is 0.5948

b. If 25 adult females are randomly​ selected,  the probability that they have pulse rates with a mean less than 76 beats per minute is 0.8849

c.   D. Since the original population has a normal​ distribution, the distribution of sample means is a normal distribution for any sample size.

Step-by-step explanation:

Given that:

Mean μ =73.0

Standard deviation σ =12.5

a. If 1 adult female is randomly​ selected, find the probability that her pulse rate is less than 76 beats per minute.

Let X represent the random variable that is normally distributed with a mean of 73.0 beats per minute and a standard deviation of 12.5 beats per minute.

Then : X \sim N ( μ = 73.0 , σ = 12.5)

The probability that her pulse rate is less than 76 beats per minute can be computed as:

P(X < 76) = P(\dfrac{X-\mu}{\sigma}< \dfrac{X-\mu}{\sigma})

P(X < 76) = P(\dfrac{76-\mu}{\sigma}< \dfrac{76-73}{12.5})

P(X < 76) = P(Z< \dfrac{3}{12.5})

P(X < 76) = P(Z< 0.24)

From the standard normal distribution tables,

P(X < 76) = 0.5948

Therefore , the probability that her pulse rate is less than 76 beats per minute is 0.5948

b.  If 25 adult females are randomly​ selected, find the probability that they have pulse rates with a mean less than 76 beats per minute.

now; we have a sample size n = 25

The probability can now be calculated as follows:

P(\overline X < 76) = P(\dfrac{\overline X-\mu}{\dfrac{\sigma}{\sqrt{n}}}< \dfrac{ \overline X-\mu}{\dfrac{\sigma}{\sqrt{n}}})

P( \overline X < 76) = P(\dfrac{76-\mu}{\dfrac{\sigma}{\sqrt{n}}}< \dfrac{76-73}{\dfrac{12.5}{\sqrt{25}}})

P( \overline X < 76) = P(Z< \dfrac{3}{\dfrac{12.5}{5}})

P( \overline X < 76) = P(Z< 1.2)

From the standard normal distribution tables,

P(\overline X < 76) = 0.8849

c. Why can the normal distribution be used in part​ (b), even though the sample size does not exceed​ 30?

In order to determine the probability in part (b);  the  normal distribution is perfect to be used here even when the sample size does not exceed 30.

Therefore option D is correct.

Since the original population has a normal distribution, the distribution of sample means is a normal distribution for any sample size.

5 0
2 years ago
What’s 4x+2[4-2(x+2)]=2x-4 solve for x
Tom [10]

the answer is x=2 hope this helps :)

4 0
3 years ago
Read 2 more answers
Other questions:
  • 99 Points for correct answer!!!!!!!!!
    14·1 answer
  • What is 8.525 rounded to the nearest hundredth
    7·1 answer
  • PLEASE HELP PLEASE
    15·2 answers
  • Could someone please help me
    14·1 answer
  • How to find y Intercept​
    8·1 answer
  • Which of the following is NOT TRUE in determining if two graphs are inverses of each other?
    9·1 answer
  • Cho hàm số 3 biến. Hỏi có bao nhiêu đạo hàm riêng cấp 3
    13·1 answer
  • Given the diagram below, find the height of the shorter tree.
    11·1 answer
  • What is nine and three hundred twenty-one thousandths in decimal notation?
    13·2 answers
  • Which step could be used to solve x + 3.6 = negative 1.7 for x in one step? Select two options.
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!