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
mixer [17]
3 years ago
12

Which pairs of polygons are congruent?

Mathematics
1 answer:
Roman55 [17]3 years ago
5 0
I would say that its pair 1 and 3
You might be interested in
Silicon wafers are scored and then broken into the many small microchips that will he mounted into circuits. Two breaking method
antoniya [11.8K]

Answer:

a

The estimate is  - 0.0265\le  K \le  0.0465

b

Method B this is because the faulty breaks are less

Step-by-step explanation:

The number of microchips broken in method A is  n_1 = 400

The number of faulty breaks of method A is  X_1 = 32

 The number of microchips broken in method B is  n_2  = 400

 The number of faulty breaks of method A is  X_2 = 32

  The proportion of the faulty breaks to the total breaks in method A is

       p_1 = \frac{32}{400}

      p_1 = 0.08

 The proportion of the faulty to the total breaks in method B is

      p_2 =  \frac{28}{400}

     p_2 =  0.07

For this estimation the standard error is  

      SE =  \sqrt{ \frac{p_1 (1 - p_1)}{n_1}  + \frac{p_2 (1- p_2 )}{n_2} } }

  substituting values

       SE =  \sqrt{ \frac{0.08 (1 - 0.08)}{400}  + \frac{0.07 (1- 0.07 )}{400} } }

      SE = 0.0186

The z-values of confidence coefficient of 0.95 from the z-table is  

       z_{0.95} =  1.96

The difference between proportions of improperly broken microchips for the two breaking methods is mathematically represented as

        K = [p_1 - p_2 ] \pm z_{0.95} * SE

substituting values

        K = [0.08 - 0.07 ] \pm 1.96 *0.0186

         K  =  - 0.0265 \ or  \ K  =  0.0465

The interval of the difference between proportions of improperly broken microchips for the two breaking methods is  

      - 0.0265\le  K \le  0.0465

3 0
3 years ago
If d=8, find the value of 3d. _____
yan [13]

Answer:

24

Step-by-step explanation:

3d

= 3 × 8

= 24

Hope it helps you:)

3 0
2 years ago
Read 2 more answers
Multiply the following complex numbers: (-7+ ) and ( + i). Show all work and explain the steps you are taking in the work.
notka56 [123]

Answer:

Step-by-step explanation:

in complex number land there are two distict parts real.. the first number and imaginary.. the second number with the i

if your problem really only has a 7 and an i in it.. then it looks like below

7 * i  = 7i

but..I suspect you just left out a bit of the problem.. repost .. i'll answer it again if the problem is different that what you posted already  :)

8 0
2 years ago
SOMEONE PLEASE HELP ME WITH THIS ILL GIVE YOU BRAINLY IF YOU GET IT RIGHT PLEASE PLEASEE!!!!!!
Rufina [12.5K]

Answer:

no entiendo nada eso es inglés y pus yo no lo entendo

3 0
3 years ago
Mr.hamrick bought 6 bags of candy each bag contained 8 candies. She put a equal number of candies in each of the 9 gift boxes. H
VARVARA [1.3K]

Answer:

0.333...

Step-by-step explanation:

6×8=48

48÷9=5.333...

(The ... means repeating)

3 0
2 years ago
Other questions:
  • In how many ways can I distribute $6$ identical cookies and $6$ identical candies to $4$ children, if each child must receive ex
    8·1 answer
  • Adam bought a apples for $1.50 each and b oranges for $2 each. He spent 1.50a+2b dollars. What does 2b represent? Solve for a wh
    15·1 answer
  • Write a quadratic function in standard form with zeros 5 and 6
    11·1 answer
  • How can I learn the heart of algebra in 3 days for my PSAT ​
    7·1 answer
  • Explain how to use the distributive property to find the product (3) ( 4 1 5 )
    7·2 answers
  • Three times the difference of a number and seven is negative three. Fi<br> nd the number.
    8·1 answer
  • I dont know what im doing can some1 help
    12·1 answer
  • Factor out -32y^2 - 24y
    7·1 answer
  • A car manufacturer provided information about two different car models
    12·1 answer
  • An area of a square is 1.56 square feet what si the area of a floor covered with 10 to the third power tiles?
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!