How do you know if a sum or product will result in a rational or irrational number?

Answers

Answer 1
The sum of two irrational numbers will be a rational but if the irrational parts of the numbers have a zero sum or cancel each other out the sun will be rational

Related Questions

I need help! This is 8 points!


Boxing Chocolates


The chocoholic Chocolate Company wants to create three different boxes of chocolates for Valentine’s Day with 20, 32, and 36 chocolates in a box. The chocolates will be arranged in a rectangle, with the space needed for each chocolate is one square inch. The company would like to order ribbon to go all the way around the slides of each box, and the managers are wondering whether they can order the same length of ribbon for all three boxes. Is this possible?


Rewording:

3 rectangular boxes with 20, 32, and 36 sqin (square inches). Can the perimeter of all of them be the same?


Please help this is due on Sunday

Answers

Answer:

nope

Step-by-step explanation:

there are same sizes fine but the breadth isn't the same

Need help with 2 and 3 and express I’m radical form

Answers

This is just simple Pythagorean’s theorem. a^2 + b^2 = c^2

Number 2:
5^2 + x^2 = 10^2
25 + x^2 = 100
x^2 = 75
x = sqrt 75 = 5*sqrt(3)

Number 3:
4^2 + x^2 = 7^2
16 + x^2 = 49
x^2 = 33
x = sqrt 33

The run times of a marathon runner are approximately normally distributed. The z-score for his run this week is – 2 . Which one of the following statements is a correct interpretation of his z-score?

Answers

Answer:

2 standard deviation under his average time

Step-by-step explanation:

The jogging track at Francine's school is 3/4 mile long. Yesterday Francine completed two laps on the track. If she ran 1/3 of the distance and walked the remainder of the way, how far did she walk?

Answers

3/4 of a mile is 0.75mi. Two laps would be 0.50mi. 1/3=0.33mi
0.50-0.33=0.17
Francine walked 0.17mi

PLS HELP! which graph is the function 3x + 2y = 8 with the given domain {-2,0,2,4}??






Answers

Answer:

D

Step-by-step explanation:

Domain of the function 3x + 2y = 8 are the possible set of x-values represented as {-2, 0, 2, 4}.

To know which graph represents the above given function, find the range values of the function by plugging in each value of x into the equation, to find y.

For x = -2,

3(-2) + 2y = 8

-6 + 2y = 8

2y = 8 + 6

2y = 14

y = 14/2

y = 7

(-2, 7)

For x = 0,

3(0) + 2y = 8

0 + 2y = 8

2y = 8

y = 8/2

y = 4

(0, 4)

For x = 2,

3(2) + 2y = 8

6 + 2y = 8

2y = 8 - 6

2y = 2

y = 2/2

y = 1

(2, 1)

For x = 4,

3(4) + 2y = 8

12 + 2y = 8

2y = 8 - 12

2y = -4

y = -4/2

y = -2

(4, -2)

The graph which shows the following set of coordinates pairs calculated above, ((-2, 7), (0, 4), (2, 1), (4, -2)), is the graph of the function 3x + 2y = 8.

Thus, the graph in option D the shows the following calculated coordinate pairs. Therefore, graph D is the answer.

Convert the following 450 seconds to minutes. Use common ratios for help

Answers

Step-by-step explanation:

1 minute has 60 seconds

what about 450 seconds

so

450/60=7.5

so 450 seconds are 7.5 minutes.

21. CAREERS Many professions use deductive reasoning and paragraph proofs. For example, a police officer uses deductive reasoning investigating a traffic accident and then writes the findings in a report. List a profession, and describe how it can use paragraph proofs.​

Answers

Answer:

don't know..I am not fully understand.

can u please bhut other example

Margie is offered two different jobs. The first is as a
cashier at a grocery store where she'd work for 22
weeks and earn $350.00 per week. The second is as a
dog walker where she'd work for 8 months and would
earn $1375.00 per month with monthly raises of 5%
of the previous months salary. How much more does
Margie earn if she takes the dog walking job?

Answers

Answer:

$424552300

Step-by-step explanation:

Twenty distinct cars park in the same parking lot every day. Ten of these cars are USmade while the other ten are foreign-made. The parking lot has exactly twenty spaces all in a row so the cars park side by side. However, the drivers have varying schedules so the position any car might take on a certain day is random. What is the probability that on a given day, the cars will park in such a way that they alternate (i.e., no two US-made cars are adjacent and no two foreign-made cars are adjacent)?

Answers

Answer:

The probability that on a given day, the cars will park in such a way that they alternate is 1.0825 × 10⁻⁵.

Step-by-step explanation:

It is provided that the cars will be parked in such a way that they will be alternating: US made, foreign made, US made, foreign made, etc.

First park all the US cars. This can be done in 10! ways, since the cars are distinct.  

Now park the foreign cars between the US cars. This can also be done in 10! ways.  

Since the sequence could begin either with a US car or with a foreign car, the possible number of ways to park alternating cars is

Favorable Outcomes = 2 × 10! × 10!

The total number of ways to park the 20 distinct cars is,

Total Outcomes = 20!

Compute the probability that on a given day, the cars will park in such a way that they alternate as follows:

[tex]P(\text{Alternate Parking})=\frac{\text{Favorable Outcomes}}{\text{Total Outcomes}}[/tex]

                                  [tex]=\frac{2\times 10!\times 10!}{20!}\\\\=\frac{2\times 10!\times 10!}{20\times 19\times 18\times ...10!}\\\\=\frac{2\times 10!}{20\times 19\times 18\times ...11}\\\\=1.0825\times 10^{-5}[/tex]

Thus, the probability that on a given day, the cars will park in such a way that they alternate is 1.0825 × 10⁻⁵.

Please help me with this geometry homework

Answers

Answer:

18

Step-by-step explanation:

We know that line FH total length is 49. We also know that the length of line GH is 31.

To find FG, all we need to do is subtract 49-31 to find the length of FG.

Line FG total length is 18.

James completed 18 math problems,This is 30% of the problems he has to do.How many math problems must he do?

Answers

Answer:

60

Step-by-step explanation:

percentage=18

rate=30%

base=_____

p/r=b

18/0.30=60

Answer:

60

Step-by-step explanation:

18=30%

6=10%

6x10=60

10x10=100%

The value of 8 in 8596 is blank the value of 8 in 985

Answers

The value of 8 in 8596 is 100 times the value of 8 in 985

To do this type of problem we can really sound them out. What I mean by that is say where the 8 is in particular.

When you look at 8596 you say eight THOUSAND. Therefore it is in the thousand spot. Now look at 985 you say nine hundred and EIGHTY five. Because we know that it isn’t in the hundreds spot because 9 is in it then we go to the next value which is the 10’s spot.

Now we want to look at the difference between the 1000 and 10 spot. How do you get 10 to 1000? Multiply by 100 and add two zeros to therefore get 1000. This would mean that the value of 8 in 8596 is 100 times the value of 8 in 985.

Solve for x.
6x
(2x + 12)

Answers

It’s a straight line, and a straight line equals 180° so it would be:
180=6x+2x+12
180=8x+12
subtract 12 from both sides
168=8x
divide both sides by 8
21=x
the answer is 21 which is the second choice

Line passes (-5, -1) and (10, -7)

Answers

Answer:

[tex]y=-\frac{2}{5}x-3[/tex]

Step-by-step explanation:

Write in slope-intercept form,  y = m x +b .

Answer: m = -0.4

Step-by-step explanation: -7 - (-1) = -6 and 10 - (-5) =15, m=y/x so -6/15 equals -0.4.

Hope this helps!

GIVING BRAINLIST SO PLZZ HELP I REALLY NEED HELP

Which situation results in a final value of zero?

A. The temperature after a decrease of 5ºF from a temperature of -5ºF.
B. The height of an airplane after taking off from ground level and rising 1,000 feet.
C. The amount of money received in change after making a $10 purchase with a $20 bill.
D. The distance above sea level after increasing 24 meters from a depth of 24 meters below sea level.

Answers

Answer:

The answer is D.

Step-by-step explanation:

-24+24=0


The sum of the measures of the angles of any triangle is 180 degrees. In triangle ABC, angles A and B have the same measure, while the measure of angle C is 90
degrees larger than each of A and B. What are the measures of the three angles?

Answers

Step-by-step explanation:

A

is 45

B

is 45

C

is 90

hence

A+B+C=180

=45+45+90 =180

Lake Superior, along the us Canada border, has a maximum depth of 1333 feet. There are 5280 feet in one mile. How deep is lake Superior in miles ? Round to the nearest hundredth if necessary. PLEASE HELP PLEASE

Answers

Answer:

=  0.2525  miles

Step-by-step explanation:

What is the slope of the line?​

Answers

Answer:

3

Step-by-step explanation:

Because the slope line is ending on 3

Round to the place valué of the under lined digit 641,267 the 4 Is under lined

Answers

answer:

640,000

step-by-step explanation:

to find the answer, we need to determine whether 41,267 is closer to 40,000 or 50,000.

looking at the numberline, we can conclude that the placement of 641,267 is closer to 640,000, not 650,000.

therefore, the answer is 640,000. (see image attached)

hope this helps :)  

-audrey <3

38 / 20 - 87 + 38 + 78 ​

Answers

Answer:

30.9 is your answer

Step-by-step explanation:

Please answer this correctly without making mistakes

Answers

12%

The fraction is 12/100, which is the same as 12%

Hope this helps!

Without using a calculator, order the following expressions from least to greatest.

Answers

Here we want to order from least to greatest the following expressions:

7.12 = 7.121212...

√75

√45

We will find that the order is: √45 < 7.12 < √75

remember that:

√x = y

such that:

y*y = x

From this, is easy to see that:

√45 < √75

Now to see where 7.1212... enters, we need to compute:

(7.1212...)*(7.1212...) = (7 + 0.1212...)*(7 + 0.1212...)

                               = 7*7 + 2*7*0.121212... + 0.1212...*0.1212...

                               = 49 + 2*7*0.121212... + 0.1212...*0.1212... > 45

So we know for sure that:

7.12 > √45

And 8*8 = 64 < 75

then:

7.12 < 8 = √64 < √75

For transitivity, we have:

7.12< √75

Then the order, from least to greatest, is:

√45 < 7.12 < √75

If you want to learn more, you can read:

https://brainly.com/question/21548193

                         

Find the equation of the line using the given information.
(x, y) = (-3,0) and (x, y) = (-3, 5) are points on the line

Pls help

Answers

Answer:

x 1 = -3  

x2 = -3

y1 = 0

y2 = 5

The slope of that equation is infinite and the equation is a perfectly vertical line at x = -3.

So, the equation is x = -3.

Step-by-step explanation:

Given parameters:

The coordinates of points on the line;

  (x, y) = (-3,0) and (x, y) = (-3, 5)

Unknown;

The equation of the line = ?

The equation of a line is usually expressed in the form y = mx + c

  Where;

     y and x are the coordinates

      m is the slope

      c is the y-intercept

Now we need to first find the slope of the line.

    Slope  = [tex]\frac{y_{2} - y_{1} }{x_{2} - x_{1} }[/tex]  

       (x₁, y₁) = (-3,0) and (x₂, y₂) = (-3, 5)

Input the parameters and solve;

     Slope = [tex]\frac{5 - 0}{-3 -(-3)}[/tex]   = infinity

The line has an infinite slope.

The equation of the line is therefore x  = c

         x  = -3

15 POINTS TO THE FIRST TO ANSWER



Simplify the expression. SHOW ALL STEPS for full credit!
(x-2)(-2x^2 - 4x + 6)

Answers

Hey :)

Use the distributive property to multiply x−2 by −2x^2 - 4x+6 and combine like terms

= -2^3 + 14x -12

Hope this helps :)

2/3 x-4 = -2

A -3
B -4
C -9
D 3​

Answers

Answer:

i think its d

Step-by-step explanation:

cause i solved it and got the same answer

Joel used a half gallon of paint to cover 84 square feet of wall. He has 932 square feet of wall to paint. How many gallons of paint should he purchase?

I will give u a Brainly <33 :)

Answers

Answer:

6 Gallons of Paint

Step-by-step explanation:

If you use a half gallon of paint to cover 84 square feet, how much could you paint with a full gallon? Lets figure it out:

[tex]\frac{1}{2} = 84[/tex]

multiply both sides by 2 so that the 1/2 gallon is now 1 gallon:

[tex]\frac{1}{2} * 2 = 84 * 2[/tex]

1 gallon = 168 square feet

now, how many gallons does it take to paint 932 square feet?

Divide 932 by 168:

[tex]\frac{932}{168} = 5.548[/tex]

Just like you cant buy 2.374 cheeseburgers, you cant buy 5.548 gallons of something so we round up and will have some paint left over once the job is done. So 6 gallons is the answer

The amount of gallons needed is 5.55gallons approximately

If Joel used a half-gallon of paint to cover 84 square feet of wall, this can be expressed using the equality sign as:

1/2 gallons = 84 square feet

In order to find the number of gallons for 932 square feet of wall to paint, we will write:

x = 932 square feet

Divide both expressions

1/2x = 84/932

2x = 932/84

2x = 11.09

x = 11.09/2

x = 5.55 gallons

This shows that the amount of gallons needed is 5.55gallons approximately

Learn more here: https://brainly.com/question/3796978

What is 6P3? A) 20 B) 18 C) 630 D) 120

Answers

Answer:

120

Step-by-step explanation:

Use the permutation and combination formulas to evaluate.

Answer:

20

Step-by-step explanation:

just took the test

4log3 X + log7 help
help help

Answers

Answer:  

log (567x 4)

The 4 is and exponent

Step-by-step explanation:

X-6y-7=0. What is equation in general form.

Answers

Answer:

y=1/6x-7/6

Step-by-step explanation:

-6y = -x + 7

y = x/6 - 7/6

This is assuming you mean in standard form.

Also, you may have to write it as 'y=1/6x-7/6'

Why u yelling I don’t know mannn

Answers

tell em to stop yelling

Answer:

Stop yellin

Step-by-step explanation:

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