trên tập số thực R ,xét quan hệ xRỵ khi và chỉ khi x ^ 2 = y ^ 2


a) Chứng minh rằng R là một quan hệ tương đương trên R.


b) Mô tả lớp tương đương của một phần tử a bắt kì, từ đó mô tả tập thương R /R.

Answer:

1/100, 0.01, and shade one of the collums

Step-by-step explanation:

A. 0.1 or 10%

B. 0.01 or 1%

C. 0.0001 or 0.01%

D. 0.01 or 1%

Note: In textbooks like this, you should probably check the back of the book, they usually have detailed answers/rationales.

I HOPE IT WILL HELP YOU.

Thank you.

Answer:

1) [tex]v=4.5[/tex]

2)[tex]c=6.3[/tex]

3)[tex]g=0.4[/tex]

4)[tex]a=17.4[/tex]

For those who have images blocked:

1) v = 4.5

2) c = 6.3

3) g = 0.4

4) a = 17.4

Answer:

3500÷6= 583

Step-by-step explanation:

It is 3500, because 5, the tens can give 4, the hundred

Answer:

Step-by-step explanation:

Intersecting lines make equal opposite angles

2x + y = 50 - y

     2x = 50 - 2y

       x = 25 - y

A straight line represents 180°

4x + 6y + 2x + y + 2x + 3y = 180

                            8x + 10y = 180

                  8(25 - y) + 10y = 180

                  200 - 8y + 10y = 180

                                     2y = -20

                                       y = -10

       x = 25 - (-10)

       x = 35

Answer:2.5 times depper duh

Step-by-step explanation:

Answer:

[tex] \frac{\pi}{4} = 45° \\ \\ \frac{\pi}{6} = 30°[/tex]

[tex]( \cos( \frac{\pi}{4} ) + \sin( \frac{\pi}{6} ) ) ^{2} \\ \\ \\ {( \cos(45°) + \sin(30°) ) }^{2} \\ \\ \\ ( \frac{1}{ \sqrt{2} } + \frac{1}{2} ) ^{2} \\ \\ \\ (( \frac{1}{ \sqrt{2}} \times \frac{ \sqrt{2} }{ \sqrt{2}} ) + \frac{1}{2} )^{2} \\ \\ ( \frac{ \sqrt{2} }{2} + \frac{1}{2} )^{2} \\ \\ {( \frac{ \sqrt{2} + 1}{2} })^{2} \\ \\ \frac{( \sqrt{2} + 1)( \sqrt{2} + 1)}{ {2}^{2} } \\ \\ \\ \frac{2 + \sqrt{2} + \sqrt{2} + 1}{4} \\ \\ \\ = \frac{3 + 2 \sqrt{2} }{4} \\ \\ \\ = \frac{3 + 2(1.414)}{4} \\ \\ = \frac{3 + 2.828}{4} \\ \\ = \frac{5.828}{4} \\ \\ = 1.457[/tex]

I hope I helped you^_^

Answer:

Step-by-step explanation:

Answer:

446mm

Step-by-step explanation:

If we box off parts of the area, it makes it easier to solve. I personally broke it into tiny bits:

Upper left box: 16mm

Bigger box (excluding little box): 90mm

Big rectangle: 340mm

Now, add them all together.

Equals 446mm

Answer:

area: 446mm

Step-by-step explanation:

split up the shape into squares, find the area of those, add it all together to get the total area

Answer:

it is d

Step-by-step explanation:

ok good luck

Answer:

There is a 1.8% chance that one of the cars will need a repair in the first month.

Step-by-step explanation:

It’s actually very simple, as we just have to multiply the 0.6% by 3, considering that there are three cars, and we then get the answer; 1.8%.

Hope This Helped!

Using the combination formula, it is found that there is a 0.2448 = 24.48% probability that the six claims selected will include one workers compensation claim, two homeowners claims and three auto claims.

Combination formula:

[tex]C_{n,x}[/tex] is the number of different combinations of x objects from a set of n elements, given by:

[tex]C_{n,x} = \frac{n!}{x!(n-x)!}[/tex]

The desired outcomes are:

Thus:

[tex]D = C_{2,1}C_{4,2}C_{7,3} = \frac{2!}{1!1!} \times \frac{4!}{2!2!} \times \frac{7!}{4!3!} = 420[/tex]

For the total outcomes, six claims from a set of 13, thus:

[tex]T = C_{13,6} = \frac{13!}{6!7!} = 1716[/tex]

The probability is:

[tex]p = \frac{D}{T} = \frac{420}{1716} = 0.2448[/tex]

0.2448 = 24.48% probability that the six claims selected will include one workers compensation claim, two homeowners claims and three auto claims.

A similar problem is given at https://brainly.com/question/25112440

Answer:

89 minutes or 1 hour and 29 minutes

Step-by-step explanation:

Answer:

12.9 i think

Step-by-step explanation:

Answer:

Step-by-step explanation:

✓ Step-by-step explanation:commission earned = 60% of $800800 × 60/100 = $480

The Commission (in dollars) he earn last month is $480.

The unitary technique involves first determining the value of a single unit, followed by the value of the necessary number of units.

For example, Let's say Ram spends 36 Rs. for a dozen (12) bananas.

12 bananas will set you back 36 Rs. 1 banana costs 36 x 12 = 3 Rupees.

As a result, one banana costs three rupees. Let's say we need to calculate the price of 15 bananas.

This may be done as follows: 15 bananas cost 3 rupees each; 15 units cost 45 rupees.

Given:

A salesman earns 60% commission on all the merchandise that he sells. Last month he sold $800 worth of merchandise.

So, the Commission he earns

= 800 + 800 x 60%

= 800 + 800 x 60/100

= 800 + 480

= 1280

Hence, the commission is $480.

Learn more about Unitary Method here:

https://brainly.com/question/22056208

#SPJ2

Answer:

64

Step-by-step explanation:

Answer:

18

Step-by-step explanation:

9/4=2.25

2.25x8=18in

Answer:

a

Step-by-step explanation:

Thing that x = a kid and y = it's biological mother

To be a function you need for each x to have only one y !

a. {(x= -3, y = -2), (x= -1, y= 3), (x=0, y= -2), (x= 3, y= 4)} Is a Function

b. {(x= 0, y= 1), (x= 3, y= 2), (x= 5, y= -3), (x= 0, y= 2)} Not  a Function because kid x=0 has two biological mothers y=1 and y=2.

c. {(x= -7, y= -7) (x= -2, y= 5),(x= -1, y= 6).(x= -2, y= -5)}Not a Function because kid x= -2 has two biological mothers y= 5 and y= -5

d. {(x= -4, y= -7), (x= -9, y= 5), (x= 4, y= -2), (x= -9, y= 0)} Not a Function because kid x= -9 has two biological mothers y= 5 , and y= 0

Answer:

Step-by-step explanation:

x +3 I x⁴ + 0x³ - 6x² + 0x  -28 I x³ - 3x² + 3x - 9

         x⁴ + 3x³

       -       -      

                -3x³ - 6x²

                -3x³ - 9x²

                 +      +    

                        3x² + 0x

                       3x²  + 9x

                        -       -      

                                -9x  -28

                                -9x  - 27

                                +      +    

                                         -1

P(x) =(x +3)* (x³ - 3x² + 3x - 9) + (-1)

Answer:

13

Step-by-step explanation:

Answer:

Step-by-step explanation:

Empty

5/8 * 160 = 100

Full

There are two ways you can do this.

160 - 100 = 60 seats were full

or

160 * 3/8 = 60 seats were full.

Where did the 3/8 come from?

1 - 5/8 = 3/8

y = x^2 to  Green

y = –2(x – 2)^2 + 2  Blue

Answer:

an=-2n-3

Step-by-step explanation:

Answer:

-6 ≤ x ≤ 7

Step-by-step explanation:

"Inclusive" here means that the endpoints -6 and 7 are part of the solution set.  This set includes all numbers between -6 and 7:

[-6, 7] or -6 ≤ x ≤ 7

Answer:

I think it d≥40

Step-by-step explanation:

Probally is d≥40

The inequality equation of the total amount in dollars that Elena spends on supplies is d ≥ 40.

Inequality is simply a type of equation that does not have an equal sign in it. Inequality is defined as a statement about the relative size as well as is used to compare two statements.

Elena is planning to go camping for the weekend and has already spent $40 on supplies. She goes to the store and buys more supplies.

Let d be the total amount. Then we have

d ≥ 40

More about the inequality link is given below.

https://brainly.com/question/19491153

Answer:

196 / 10

Step-by-step explanation:

Not sure but hope it helps