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
lisabon 2012 [21]
3 years ago
7

Help pure people pls

Mathematics
1 answer:
Sedaia [141]3 years ago
7 0

Answer:

Option (B). Perimeter of the quadrilateral ABCD= 14.6 units

Step-by-step explanation:

From the figure attached,

Coordinates of the vertices are A(3, 5), B(1, 3), C(3, -1), D(5, 3).

Length of AB = \sqrt{(x_{2}-x_{1})^2+(y_{2}-y_{1})^2}

                      = \sqrt{(3-1)^2+(5-3)^2}

                      = \sqrt{8}

                      = 2.83 units

Length of AD = \sqrt{(3-5)^2+(5-3)^2}

                      = \sqrt{8}

                      = 2.83 units

Length of BC = \sqrt{(1-3)^2+(3+1)^2}

                      = \sqrt{20}

                      = 4.47 units

Length of DC = \sqrt{(5-3)^2+(3+1)^2}

                       = \sqrt{20}

                       = 4.47 units

Perimeter of the quadrilateral = AB + AD + DC + BC

                                                 = 2.83 + 2.83 + 4.47 + 4.47

                                                = 14.6 units  

Option (B) is the answer.

You might be interested in
Need help pleasethank you
ad-work [718]
To divide like bases just subtract the exponents
answer is 2^(13-3) or 2^10 or 1024
8 0
3 years ago
The National Center for Educational Statistics surveyed 5400 college graduates about the lengths of time required to earn their
fenix001 [56]

Answer:

The 90% confidence interval for the mean time required by all college graduates is between 5.36 years and 5.44 years.

Step-by-step explanation:

We have that to find our \alpha level, that is the subtraction of 1 by the confidence interval divided by 2. So:

\alpha = \frac{1-0.9}{2} = 0.05

Now, we have to find z in the Ztable as such z has a pvalue of 1-\alpha.

So it is z with a pvalue of 1-0.05 = 0.95, so z = 1.645

Now, find the margin of error M as such

M = z*\frac{\sigma}{\sqrt{n}}

In which \sigma is the standard deviation of the population and n is the size of the sample.

M = 1.645*\frac{1.9}{\sqrt{4500}} = 0.04

The lower end of the interval is the sample mean subtracted by M. So it is 5.4 - 0.04 = 5.36 years.

The upper end of the interval is the sample mean added to M. So it is 5.4 + 0.04 = 5.44 years.

The 90% confidence interval for the mean time required by all college graduates is between 5.36 years and 5.44 years.

3 0
3 years ago
What is the area of the figure?
wel

Answer: 448

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Solve the simultaneous equation
MrMuchimi

Answer:

x=4.5

y=-2.5

Step-by-step explanation:

Multiply 2x-4y=19 by 3

Multiply 3x+5y=1 by 2

Solve simultaneously

5 0
2 years ago
Read 2 more answers
AM I CORRECT?? answer for 10 points
OverLord2011 [107]

lox (x) = -5

rewrite the equation in exponential form:

10^-5 = x

10^-5 = 1/10000

1/10000 = 0.00001


That is the correct answer.

8 0
3 years ago
Other questions:
  • The value of a graphing calculator is $225. After 2 years, the value of this calculator is $160. Find the value of the calculato
    12·1 answer
  • What is the axis of symmetry for y=-5x^2-10x-13
    14·1 answer
  • WILL GIVE BRAINLIEST !!!
    13·2 answers
  • Solve the following equation:
    12·2 answers
  • Using the counting principle to find the probability of choosing the 8 winning lottery numbers when the numbers are chosen at ra
    7·1 answer
  • ​A golf driving range has small buckets of golf balls for $6 each and medium buckets of golf balls for $8 each. One day, golfers
    7·1 answer
  • Can someone please help me?!?!?!?
    10·1 answer
  • PLZ HELP AND SHOW UR WORK PLZZZZZZZZZ ;3
    14·1 answer
  • Please help i’ll give brainless
    5·1 answer
  • A population of bees is decreasing. The population in a particular region this year is 1250. After year 1, it is estimated that
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!