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
Mashcka [7]
3 years ago
8

HELP DUE IN 10 MINS! m∠B =??

Mathematics
1 answer:
Verdich [7]3 years ago
7 0

Answer:

  • 130°

Step-by-step explanation:

<u>Isosceles trapezoid has congruent angles at each base:</u>

  • ∠C ≅ ∠B, ∠D ≅ ∠A
  • m∠B = m∠C = 130°
You might be interested in
How much is 3×4+9÷6+44×77×777×00+9?​
jarptica [38.1K]

Answer:3*9+9/6+44*77*777*00+9, so using order of applications, it simplifies to 27+1.5+9 after multiplying and dividing, and the final answer is 37.5

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
The critical value t* gets larger as the confidence level increases. True or false?
posledela

Answer:

We can find the critical value t_{\alpha/2}

And for this case if the confidence increase the critical value increase so then this statement is True

Step-by-step explanation:

For a confidence level given c, we can find the significance level like this:

\alpha=1 -c

And with the degrees of freedom given by:

df=n-1

We can find the critical value t_{\alpha/2}

And for this case if the confidence increase the critical value increase so then this statement is True

5 0
3 years ago
A test has 40 questions. Denise finished 2\5 of the questions in the first 10 minutes and 1\2 of the total questions in the next
leonid [27]

Answer:

28 questions answered.

Step-by-step explanation:

40(2/5) is 16 questions.

40-16 is 24 questions left.

24(.5) is 12 questions.

16+12 gets you 28 questions.

8 0
3 years ago
In a certain elementry school, 52% of the students are girls. a sample of 65 students is drawn. what is the probability that mor
Rainbow [258]

Answer:

12432435

Step-by-step explanation:

gvngxsfgjghdjmhg

7 0
3 years ago
Read 2 more answers
A simple random sample of 100 observations was taken from a large population. The sample mean and the standard deviation were de
olga2289 [7]

Answer:

Se=1.2

Step-by-step explanation:

The standard error is the standard deviation of a sample population. "It measures the accuracy with which a sample represents a population".

The central limit theorem (CLT) states "that the distribution of sample means approximates a normal distribution, as the sample size becomes larger, assuming that all samples are identical in size, and regardless of the population distribution shape"

The sample mean is defined as:

\bar X =\frac{\sum_{i=1}^n x_i}{n}

And the distribution for the sample mean is given by:

\bar X \sim N(\mu,\frac{\sigma}{\sqrt{n}})

Let X denotes the random variable that measures the particular characteristic of interest. Let, X1, X2, …, Xn be the values of the random variable for the n units of the sample.

As the sample size is large,(>30) it can be assumed that the distribution is normal. The standard error of the sample mean X bar is given by:

Se=\frac{\sigma}{\sqrt{n}}

If we replace the values given we have:

Se=\frac{12}{\sqrt{100}}=1.2

So then the distribution for the sample mean \bar X is:

\bar X \sim N(\mu=80,Se=1.2)

5 0
3 years ago
Other questions:
  • MARKING BRAINLEST!! PLEASE ANSWER BOTH!!!
    14·1 answer
  • Question 1 of 5
    12·1 answer
  • Find the 9th term of the geometric sequence whose common ratio is ⅔ and whose 1st term is 2. BRANLIEST ASAP TY!!!​
    9·1 answer
  • Big Dog Building is the one of the largest cement companies in the Midwest. When the firm raised its prices by 11 percent, all o
    14·1 answer
  • Which expressions are equivalent to 10 + 4I<br>​
    9·1 answer
  • the stilts increase a persons height by 1.5 yards.if bonnie,who is 5 feet and 7 inches tall, walks with the stilts, how tall wil
    11·1 answer
  • he expression 34×12 represents a fraction of a circle that is shaded. Which diagram shows the correct shading?
    11·1 answer
  • Jenna and Luke each earned 80 points while playing a game. Luke received 8 additional points for completing the
    13·1 answer
  • (X-2)(x^2+2x+4) what is the answer to this equation?
    5·2 answers
  • CAN YOU ANSWER THIS QUESTION
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!