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
hram777 [196]
3 years ago
13

Finding the product

Mathematics
1 answer:
pshichka [43]3 years ago
6 0
Use a box. Split the terms into the boxes and then multiply across. Sort of like area multiplication, only with terms. 


        3        5x
4y   12y     20xy

3      9        15x
You might be interested in
At a university, 60% of the 7,400 students are female. The student newspaper reports the results of a survey of a random sample
omeli [17]

Given Information:

Population mean = p  = 60% = 0.60

Population size = N = 7400

Sample size = n = 50

Required Information:

Sample mean = μ = ?

standard deviation = σ = ?

Answer:

Sample mean = μ = 0.60

standard deviation = σ = 0.069

Step-by-step explanation:

We know from the central limit theorem, the sampling distribution is approximately normal as long as the expected number of successes and failures are equal or greater than 10

np ≥ 10

50*0.60 ≥ 10

30 ≥ 10 (satisfied)

n(1 - p) ≥ 10

50(1 - 0.60) ≥ 10

50(0.40) ≥ 10

20 ≥ 10  (satisfied)

The mean of the sampling distribution will be same as population mean that is

Sample mean = p = μ = 0.60

The standard deviation for this sampling distribution is given by

\sigma = \sqrt{\frac{p(1-p)}{n} }

Where p is the population mean that is proportion of female students and n is the sample size.

\sigma = \sqrt{\frac{0.60(1-0.60)}{50} }\\\\\sigma = \sqrt{\frac{0.60(0.40)}{50} }\\\\\sigma = \sqrt{\frac{0.24}{50} }\\\\\sigma = \sqrt{0.0048} }\\\\\sigma =  0.069

Therefore, the standard deviation of the sampling distribution is 0.069.

4 0
2 years ago
If a woman making $25 an hour gets a
Leno4ka [110]

Step-by-step explanation:

She gets $220 in an 8 hour work day.

6 0
3 years ago
Quick please!
Soloha48 [4]

Answer:

3(4j + 7 + 2j)

12j + 21 + 6j

12j + 6j + 21

18j + 21 ----- (1)

3(6j +7)

18j + 21 --------(2)

eq 1 = eq. 2

both are equal

5 0
1 year ago
Another truck with the same capacity travels from the city of Puebla to Tlaxcala. Only this truck carries passengers with 115% o
Juliette [100K]

Answer:d

Step-by-step explanation:

d

3 0
2 years ago
Whats the answer to 10×(2.5+13.5)
oee [108]

Simplify 2.5 + 13.5 to 16

10 × 16

Simplify

160

7 0
3 years ago
Read 2 more answers
Other questions:
  • How would you write this in simplest form 4p-5 (p+6)=
    10·1 answer
  • The Millers drove 150 miles in 3 hours. At this rate, how long will it take them to drive 400 miles?
    14·1 answer
  • Which two transformations are applied to pentagon ABCDE to create A'B'C'D'E'?
    12·1 answer
  • Fred's basement is flooded. The basement floor is 3.4 meters below the ground floor. The water is 1.2 meters
    10·2 answers
  • Which of the following is equivalent to the complex number<br><img src="https://tex.z-dn.net/?f=i%20%5E%7B34%7D" id="TexFormula1
    7·1 answer
  • A country's population in 1995 was 142 million. In 1998 it was 148 million. Estimate the population in 2013 using the exponentia
    12·1 answer
  • Can anyone help on number 4 don’t mind the numbers on top
    10·1 answer
  • I'll give u a kith pls help
    13·2 answers
  • Need help plsssssssss
    11·1 answer
  • Ill mark brainlist plss help
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!