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
jonny [76]
3 years ago
7

I need help please :(

Mathematics
1 answer:
Lera25 [3.4K]3 years ago
7 0
The answer to this question is B
You might be interested in
What is an expression containing variables,numbers, and operation symbols?
just olya [345]

an example would be: 9x+5m/2=24

because the variables are x and m

the numbers are 9, 5, 2, and 24

and the operation symbols are +, /, and =

8 0
4 years ago
The heights of 18-year-old men are approximately normally distributed with mean 68 inches and standard deviation 3 inches. What
Nutka1998 [239]

Answer:

The probability that an 18-year-old man selected at random is greater than 65 inches tall is 0.8413.

Step-by-step explanation:

We are given that the heights of 18-year-old men are approximately normally distributed with mean 68 inches and a standard deviation of 3 inches.

Let X = <u><em>heights of 18-year-old men.</em></u>

So, X ~ Normal(\mu=68,\sigma^{2} =3^{2})

The z-score probability distribution for the normal distribution is given by;

                              Z  =  \frac{X-\mu}{\sigma}  ~ N(0,1)

where, \mu = mean height = 68 inches

           \sigma = standard deviation = 3 inches

Now, the probability that an 18-year-old man selected at random is greater than 65 inches tall is given by = P(X > 65 inches)

       P(X > 65 inches) = P( \frac{X-\mu}{\sigma} > \frac{65-68}{3} ) = P(Z > -1) = P(Z < 1)

                                                                = <u>0.8413</u>

The above probability is calculated by looking at the value of x = 1 in the z table which has an area of 0.8413.

6 0
3 years ago
I don't understand what I'm supposed to do here. I have a test on this tomorrow so if you explain how to do it that would be gre
VladimirAG [237]
Here is a little tip for this: The unit above cancels the unit below. So in this problem you are asked to convert pounds to ounce. So your equation will look like this. 

ounce = 2.93 pounds ( \frac{16 ounces}{1 pounds} ) = 46.88
Your ratio should involve the conversion factor. So 16 and 1 is involved canceling A and D. Then, Notice that you started with poubls. Then the ratio must have pounds at the bottom to cancel the units leaving ounces. 
7 0
3 years ago
Find the coordinates of the missing endpoint if M is the midpoint of DF <br> F(2,9) M(-1,6)
Hunter-Best [27]

Answer:

(-4,3)

Step-by-step explanation:

6 0
3 years ago
3x^2+6x+3y^2-12y+54=0 is a ____.
alexira [117]

Answer:

radius 2

Step-by-step explanation:


8 0
3 years ago
Other questions:
  • What is the value of f(x) = 36x when x =1/2
    9·1 answer
  • I need help on this one.number
    10·1 answer
  • Simplify the expression: cot x sin x - sin quantity pi divided by two minus x. + cos x
    14·1 answer
  • The graph of a function is a parabola that has a minimum at (-1,-2) and goes through the point (0,1).
    12·2 answers
  • I don’t understand how I’m supposed to find how much water was in the pool in the first place.
    5·1 answer
  • True or False:
    8·2 answers
  • (25x - 15)°<br> What is the value of x
    6·2 answers
  • 10 x (5x) = ? <br> help pls
    9·2 answers
  • Jack has to fill 50 water bottles for the football team. Each bottle holds 800 milliliters of water. How much water does jack ne
    11·2 answers
  • 5/9x3/4 in simplest form?
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!