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
Nookie1986 [14]
3 years ago
12

What is the answer to number 12

Mathematics
1 answer:
egoroff_w [7]3 years ago
5 0

how when there's no picture


You might be interested in
Heights for women are bell-shaped with a mean of 65 inches and standard deviation of 2.5 inches. If a random sample of 16 women
loris [4]

Answer:

μ= 65 inches; σ= 0.625 inch

Step-by-step explanation:

The Central Limit Theorem estabilishes that, for a normally distributed(bell-shaped) 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.

In this problem, we have that:

\mu = 65, \sigma = 2.5

By the central limit theorem, the sample of 16 will have:

\mu = 65, \sigma = \frac{2.5}{\sqrt{16}} = 0.625

So the correct answer is:

μ= 65 inches; σ= 0.625 inch

8 0
3 years ago
Kelko will rent a car for the weekend. She can choose one of two plans. The first plan has an initial fee of $57 and cost an add
Delicious77 [7]

Questions (contd)

(a) For what amount of driving do the two plans cost the same?

(b) What is the cost when the two plans cost the same?

Answer:

(a) 100 miles

(b) $65

Step-by-step explanation:

Given

Plan 1:

Initial\ Fee = \$57

Additional = \$0.08 per mile

Plan 2:

Initial\ Fee = \$50

Additional = \$0.10 per mile

Solving (a): Number of miles when both plans are equal

Represent the distance with x and the cost with y

So:

Plan 1:

y = 57 + 0.08 * x

Plan 2:

y = 50 + 0.10 * x

To solve (a), we equate both plans together; i.e.

y = y

57 + 0.08x = 50 + 0.10x

Collect Like Terms

0.08x - 0.10x= 50 - 57

-0.02x= -2

Solve for x

x = -2/-0.02

x = 100

Hence, 100 mile would cost both plans the same

Solving (b): Cost when both plans are the same:

In this case, we simply substitute 100 for x in any of the y equation.

y = 57 + 0.08 * x

y = 57 + 0.08 * 100

y = 57 + 8

y = 65

<em>Hence, the amount is $65</em>

7 0
2 years ago
Please please Help me!!!!!
pav-90 [236]

Answer:

19,23

Step-by-step explanation:

9+x-7≥ 21

Combine like terms

2+x≥21

Subtract 2 from each side

2+x-2 ≥21-2

x≥19

Any number greater than or equal to 19

3 0
3 years ago
The legs of a right triangle are 3 units and 6 units. What is the length of the hypotenuse? Round your answer to the nearest hun
garri49 [273]
C =\sqrt{3 ^{2} + 6  ^{2} } = 6.7082

Round 6.7082
6.71

6.71 is your answer
8 0
3 years ago
Read 2 more answers
I NEED HELP ASAP PLEASE
Kipish [7]

Answer:

D=(-3,3)

E=(5,0)

F=(2,-2)

Step-by-step explanation:

The coordinates are stated as =(x,y)

7 0
3 years ago
Other questions:
  • The lines below are parallel. If the slope of the green line is -4, what is the slope of the red line?
    6·1 answer
  • Someone help me solve this please
    13·1 answer
  • Lamar is rolling a die and recording what number he gets each time. He rolls the die 250 times and records his results in the ta
    14·2 answers
  • Help me please!!!!!!!!!!!!!!!!<br> (-7n^2-8n)+(-n^2+9n+9)
    9·2 answers
  • Choose the graph of y = 2cosx
    14·1 answer
  • Help looks like i forgot to read a ruler
    11·1 answer
  • I NEED AN EXPLANATION PLEASE!! I need a fast answer
    5·2 answers
  • Helppp pleaseeee I will get brainlest : ) type if u do
    13·1 answer
  • 20 x 6.7 raised with 3
    15·2 answers
  • Simplify<br> (8^2)^3<br><br> I thought it was 8^5 of five but I might be wrong
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!