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
Oxana [17]
3 years ago
5

What is the rotational symmetry of a rectangle

Mathematics
1 answer:
Fudgin [204]3 years ago
6 0
Order 2 rectangle has only 2
You might be interested in
In a study relating the degree of warping, in mm, of a copper plate (y) to temperature in °C (x), the following summary statisti
elena-14-01-66 [18.8K]

Answer:

a)

y = 0.3035 + 0.0082x

b)

0.6315 mm

c)

x = 23.9634 °C

Step-by-step explanation:

a. Compute the least-squares line for predicting warping from temperature. Round the answers to four decimal places.

We need to find an equation of the form

y = b + mx

where m is the slope and b the Y-intercept.

The slope m can be computed with the formula

\bf m=\displaystyle\frac{\displaystyle\sum_{i=1}^n(x_i-\bar x)(y_i-\bar y)}{\displaystyle\sum_{i=1}^n(x_i-\bar x)^2}

Replacing the values in our formula (we will round at the end of the calculations)

\bf m=\displaystyle\frac{806.94}{98,775}=0.008169476

the Y-intercept b is computed with the formula

\bf b=\bar y-m\bar x

therefore we have

\bf b=0.5188-0.008169476*26.36=0.303452613

and the least-squares line rounded to 4 decimals would be

y = 0.3035 + 0.0082x

b. Predict the warping at a temperature of 40°C. Round the answer to three decimal places.

We simply replace x with 40 to get

y = 0.3035 + 0.0082*40 = 0.6315 mm

c. At what temperature will we predict the warping to be 0.5 mm? Round the answer to two decimal places

Here, we replace y with 0.5 and solve for x

0.5 = 0.3035 + 0.0082x ===> x = (0.5-0.3035)/0.0082 ===>

 

x = 23.9634 °C

6 0
3 years ago
Find the value of x
netineya [11]

Answer:

45 degrees

Step-by-step explanation:

a right angle is 90 degrees and there is a line splitting it in half equaly. We have to also divide 90 by 2 then which is 45 so 45 degrees.

3 0
2 years ago
Read 2 more answers
Which quadratic equation is equivalent to (x+2)^2+5(x+2)-6=0?
Mrrafil [7]
U=(x+2)
u^2+5u-6=0

C is answer
8 0
2 years ago
Read 2 more answers
A store manager decides to clear out
azamat

Answer:

it would be A:55%

Step-by-step explanation

For percent, to make it easier try to turn it into a 100.

20x5=100

do the same to the 9.

9x5=45.

Now subtract 45 from 100.

100-45=55.

There was a discount of 55%.

7 0
3 years ago
How much more pizza is in a 12-in. diameter pizza than an 8-in. diameter pizza?
Kazeer [188]
A = pi * r^2 
A = 3.14 * 16 
A = 50.24 square inches 
50.24 / 12 = _______ square inches 
geometry - Becky, Saturday, May 4, 2013 at 7:44pm 4.2
5 0
3 years ago
Read 2 more answers
Other questions:
  • If 6 cards are drawn at random from a standard deck of 52 cards, what is the probability that exactly 2 of the cards are spades?
    13·2 answers
  • a rectangle swimming pool is 9 meters wide with a surface area of 3 square meters. what is the length of the pool?
    5·1 answer
  • Which number is the largest? <br> 1.2 × 10^4<br> 4.5 × 10^−3<br> 3.8 × 10^3 <br> 7.5 × 10^3
    9·1 answer
  • QUIZ
    6·1 answer
  • For the grade-level party, a local bakery donates 40 dozen cookies. There are 157 students in your grade. How many cookies can e
    12·1 answer
  • Evaluate the function at the given point ​
    7·2 answers
  • The scale factor of the scale drawing of a mirror to the actual mirror is represented by the ratio 1:8. If the dimensions of the
    11·2 answers
  • “Puppies are cute animals.”<br> 1. Write the quote as a conditional statement.
    15·1 answer
  • Find cd and the area​
    5·2 answers
  • What is the ratio of the length of the rectangle to its width. 24 and 20
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!