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
SVEN [57.7K]
3 years ago
7

5(x – 10) = 30 – 15x x = 1

Mathematics
2 answers:
Dmitrij [34]3 years ago
6 0

Step-by-step explanation:

this is your answer.........

natka813 [3]3 years ago
3 0
5(1-10)=30-15(1)
5(-9)=30-15
-45=15
You might be interested in
The International Air Transport Association surveys business travelers to develop quality ratings for transatlantic gateway airp
motikmotik

Answer:

The 95% confidence interval for the population mean rating is (5.73, 6.95).

Step-by-step explanation:

We start by calculating the mean and standard deviation of the sample:

M=\dfrac{1}{n}\sum_{i=1}^n\,x_i\\\\\\M=\dfrac{1}{50}(6+4+6+. . .+6)\\\\\\M=\dfrac{317}{50}\\\\\\M=6.34\\\\\\s=\sqrt{\dfrac{1}{n-1}\sum_{i=1}^n\,(x_i-M)^2}\\\\\\s=\sqrt{\dfrac{1}{49}((6-6.34)^2+(4-6.34)^2+(6-6.34)^2+. . . +(6-6.34)^2)}\\\\\\s=\sqrt{\dfrac{229.22}{49}}\\\\\\s=\sqrt{4.68}=2.16\\\\\\

We have to calculate a 95% confidence interval for the mean.

The population standard deviation is not known, so we have to estimate it from the sample standard deviation and use a t-students distribution to calculate the critical value.

The sample mean is M=6.34.

The sample size is N=50.

When σ is not known, s divided by the square root of N is used as an estimate of σM:

s_M=\dfrac{s}{\sqrt{N}}=\dfrac{2.16}{\sqrt{50}}=\dfrac{2.16}{7.071}=0.305

The degrees of freedom for this sample size are:

df=n-1=50-1=49

The t-value for a 95% confidence interval and 49 degrees of freedom is t=2.01.

The margin of error (MOE) can be calculated as:

MOE=t\cdot s_M=2.01 \cdot 0.305=0.61

Then, the lower and upper bounds of the confidence interval are:

LL=M-t \cdot s_M = 6.34-0.61=5.73\\\\UL=M+t \cdot s_M = 6.34+0.61=6.95

The 95% confidence interval for the mean is (5.73, 6.95).

4 0
3 years ago
Describe what a cylinder is. What are the shapes that make up the different sides?
EastWind [94]
A cylinder is made up of 1 rectangle which is folded into a circular shape. It also has 2 circles, one at the top, and one at the bottom.
4 0
3 years ago
Find the value of given expression<br><br><img src="https://tex.z-dn.net/?f=%20%5Csqrt%7B24%20%5Ctimes%205%20%2B%201%7D%20" id="
Orlov [11]

Answer:

your answer will be 11

Step-by-step explanation:

Thanks again!!

4 0
3 years ago
Read 2 more answers
Classify the model as exponential growth or exponential decay. Identify the growth or decay factor AND the percent of increase o
sweet-ann [11.9K]
See also brainly.com/question/8975313

The growth factor is 2.

The increase is (2 -1)*100% = 100% per period.
5 0
3 years ago
What is the surface area to each tower in this problem
djverab [1.8K]

Answer:

What problem

Step-by-step explanation:

6 0
3 years ago
Other questions:
  • Ms. Lee, a single adult, earned $65,000 in taxable income last year. Use the rate table below to calculate how much she must pay
    12·1 answer
  • The sample mean foot length of a simple random sample of 25 third-graders is 22.5 cm. The standard error of the mean is 0.8 cm.
    14·1 answer
  • A magazine provided results from a poll of 2000 adults who were asked to identify their favorite pie. Among the 2000 ​respondent
    12·1 answer
  • What is the y-intercept of this line?​
    9·2 answers
  • A radio station had 205 tickets to a concert. They gave away 4 times as many tickets to listeners as to employees. How many tick
    5·1 answer
  • Which pair of equations represents parallel lines?
    14·2 answers
  • Sawyer is ordering sets of guitar strings and bags of picks for his guitar. A new set of strings costs $12 and a new bag of pick
    7·1 answer
  • Evaluate the function.<br> Given f(x) = x2 - 4x2 - 3x - 5, find f(5).
    6·1 answer
  • Cho biết DABC ∽DMNP theo tỉ số 2/3 và chu vi của DABC là 12cm. Chu vi của DMNP là .Kết luận đúng là:
    10·2 answers
  • 2.3y +7 =-11 hehebbn​
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!