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
emmainna [20.7K]
3 years ago
14

The following quadrilateral is a parallelogram.

Mathematics
1 answer:
kvv77 [185]3 years ago
8 0

Answer:

12

Step-by-step explanation:

By definition, opposite sides of a parallelogram are congruent.

You might be interested in
304001 in expanded form
allsm [11]

Answer:

300,000 + 4,000 + 1

Step-by-step explanation:

Expanded form is used to show the mathematical values of numbers.

304001 in expanded form is 300,000 + 4,000 + 1.

There are 3 hundred thousands, 4 thousands, and one one.

5 0
3 years ago
Are corresponding angles in similar figures congruent?
Gala2k [10]

Answer:

yes

Step-by-step explanation:

Only the lengths change, not the angles.

3 0
3 years ago
Let the following sample of 8 observations be drawn from a normal population with unknown mean and standard deviation: 22, 18, 1
BigorU [14]

Answer:

a:  Sample mean: 20, Sample standard deviation: 1.732

b:  19.13 <µ < 20.87

c:  18.84< µ < 21.16

d:  as the confidence level increases, the interval becomes wider

Step-by-step explanation:

a:  Sample mean is found by adding up all the individual values of the sample, then dividing by the total number of values in the sample.  

Sample standard deviation is the square root of the variance

See the first attached photo for the calculations of these values.

We need to create a 80% confidence interval for the population.  Since n < 30, we will use a t-value with degree of freedom of 7 (the degree of freedom is always one less than the sample size.  

Look for the column on the t-distribution chart that has "area in two tails" of 0.20 (80%), and row 7 (degree of freedom)

The t-value is 1.415

See the second attached photo for the construction of the confidence interval

We need to create a 90% confidence interval for the population.  Since n < 30, we will use a t-value with degree of freedom of 7 (the degree of freedom is always one less than the sample size.  

Look for the column on the t-distribution chart that has "area in two tails" of 0.10 (90%), and row 7 (degree of freedom)

The t-value is 1.895

See the third attached photo for the construction of the confidence interval

3 0
3 years ago
The difference between nine times number and thirty
svetlana [45]
9x-30 I’m pretty sure!
We are finding the difference, which means subtract! Nine times a number would be 9x and since it’s difference you would subtract it by 30.
3 0
3 years ago
Which is the best approximation of PX
Aleks [24]

Answer:

We now want to find the best approximation to a given function. This fundamental problem in Approximation Theory can be stated in very general terms. Let V be a Normed Linear Space and W a finite-dimensional subspace of V , then for a given v ∈ V , find w∗∈ W such that kv −w∗k ≤ kv −wk, for all w ∈ W.

Step-by-step explanation:

8 0
3 years ago
Other questions:
  • I NEED HELP(10 POINTS) ON THIS PROBLEM
    10·1 answer
  • Party Palace had 350 balloons that could be purchased. 70 of the balloons were blue. What percent of the balloons were blue? hel
    13·1 answer
  • Find the exact values of sin(u/2) cos(u/2) and tan(u/2) given sin u=24/25 and pie/2 &lt; u &lt; pie
    10·1 answer
  • Which number is a constant in the algebraic expression? Negative x squared minus 6 y + 13 x + 7 Negative 6 Negative 1 7 13
    6·2 answers
  • You are required to price a one-year, yen-denominated currency option on the USD. The exchange rate over the next year is modele
    13·1 answer
  • Hich equation is true when the value of x is 8?
    15·1 answer
  • How long will it take to pay off a loan of ​$51000 at an annual rate of 12 percent compounded monthly if you make monthly paymen
    15·1 answer
  • Which number is written in scientific notation?
    9·1 answer
  • A blueprint of a plot of land has a scale of 1 1/4 cm to 3 1/4 m the length of the land is 20 cm on the blueprint if i represent
    9·1 answer
  • What is the circumference of the circle? (C = πd or C = 2πr) Use 3.14 for π
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!