BRAINLIEST FOR WHOEVER GETS THIS RIGHT!!!

PLEASE HELP MATHS QUESTION!!!

BRAINLIEST FOR WHOEVER GETS THIS RIGHT!!!PLEASE HELP MATHS QUESTION!!!

Answers

Answer 1

Answer:

Step-by-step explanation:

1) first, lets rationalize the denominator by eliminating [tex]1+\frac{1}{\sqrt{2} }[/tex]

so multiply [tex]\frac{1}{1+\frac{1}{\sqrt{2} } }[/tex]  with the conjugate, [tex]1-\frac{1}{\sqrt{2} }[/tex]

we multiply with the conjugate (opposite) since we can take the conjugate and the original term in the form of (a+b)(a-b)= a^2-b^2, which would allow us to get rid of the square root:

so

(1+1/[tex]\sqrt{2}[/tex])(1-[tex]\frac{1}{\sqrt{2} }[/tex])=(1)^2-([tex]\frac{1}{\sqrt{2} }[/tex])^2

hence we are left with:

1-1/2= 0.5

0.5 is the denominator:

since conjugate is multiplied to both numerator and denominator:

for the numerator (1)([tex]1-\frac{1}{\sqrt{2} }[/tex])

is: 1-[tex]\frac{1}{\sqrt{2} }[/tex]

hence, [tex]\frac{1-\frac{1}{\sqrt{2} } }{0.5}[/tex]

so[tex]1-\frac{1}{\sqrt{2} }[/tex]

is 0.292893

so

0.292893/0.5= 0.058579

and 2-sqrt(2)= 0.058579

hence they both are equal

hope this helps!


Related Questions


Which number gives you an irrational product when you multiply it by 0.2?

Answers

Answer:

C

Step-by-step explanation:

[tex]\sqrt{5}[/tex] gives an irrational product when multuply it by [tex]0.2[/tex].

What is irrational number?

" Irrational number is defined as the set of numbers which can not be represented in [tex]\frac{x}{y} , y\neq 0[/tex] form."

According to the question,

Given multiplier [tex]= 0.2[/tex]

A. [tex]0.7[/tex]

The product of  [tex]0.7 \times 0.2 = 0.14[/tex] which is not a irrational number but a decimal number.

Option A is not the correct answer.

B. [tex]5[/tex]

The product of  [tex]5 \times 0.2 = 1[/tex] which is not a irrational number but a whole number.

Option B is not the correct answer.

C. [tex]\sqrt{5}[/tex]

The product of  

[tex]\sqrt{5} \times 0.2 \\\\= \frac{2}{10}\times \sqrt{5} \\\\= \frac{1}{5} \times \sqrt{5}\\\\=\frac{1}{\sqrt{5} }[/tex]

which is a irrational number .

Option C is the correct answer.

D. [tex]\frac{3}{4}[/tex]

The product of  

[tex]\frac{3}{4} \times 0.2\\\\= \frac{3}{4} \times\frac{2}{10}\\ \\=\frac{3}{20}[/tex]

which is not a irrational number but a fraction.

Hence, Option C is the correct answer.

Learn more about irrational number here

brainly.com/question/17450097

#SPJ2

John takes 2 hours to cut the grass in the lawn of a circular field. To cut the grass in a similar adjacent circular lawn of twice the radius, how many hours can John expect to take?

Answers

Answer:

  8

Step-by-step explanation:

The area of a circle with twice the radius is 4 times the area of the smaller circle. If John's hours are proportional to area, we expect it will take him 4 times as long for the larger area.

John can expect to take 8 hours cutting the grass in the larger lawn.

___

The area of a circle with radius r is ...

  A = πr²

The area of a circle with radius 2r is ...

  π(2r)² = 4πr² = 4A . . . . . 4 times the area of the smaller circle

I need help with this question.​

Answers

Answer:

Numerator 2b^2 + 2a^2

Denominator (b-a)(b+a)^2

2b / (b+a)^2 + 2a / (b-a)(b+a)

2b (b-a) + 2a (b + a) / (b-a) * (b+a)^2

2b^2 - 2ab + 2ab + 2a^2 / (b-a)(b+a)^2

2b^2 + 2a^2 / (b-a) * (b+a)^2

Where is the question? I got you fam

Need help with a system of equations

Answers

Answer:

[tex] \boxed{x - y = -2\sqrt{7}} [/tex]

Given:

[tex]x + y = 4 \\ \\ {x}^{2} + {y}^{2} = 22 \\ \\ {x}^{4} = {y}^{4} - 176 \sqrt{7} [/tex]

Step-by-step explanation:

[tex] = > {x}^{4} = {y}^{4} - 176 \sqrt{7} \\ \\ = > {x}^{4} - {y}^{4} = - 176 \sqrt{7} \\ \\ = > {( {x}^{2}) }^{2} - { ({y}^{2}) }^{2} = - 176 \sqrt{7} \\ \\ = > ( {x}^{2} + {y}^{2} )( {x}^{2} - {y}^{2} ) = - 176 \sqrt{7} \\ \\ = > ( {x}^{2} + {y}^{2}) (x + y)(x - y) = - 176 \sqrt{?} \\ \\ = > 22 \times 4(x - y) = - 176 \sqrt{7} \\ \\ = > 88(x - y) = - 176 \sqrt{7} \\ \\ = > x - y = - \frac{176 \sqrt{7} }{88} \\ \\ = > x - y = - 2 \sqrt{7} [/tex]

Identity used:

[tex]{x}^{2} - {y}^{2} = (x + y)(x - y)[/tex]

Answer:

-2[tex]\sqrt{7}[/tex]

Step-by-step explanation:

[tex]x^{4} - y^{4} = -176\sqrt{7} \\(x^{2} + y^{2})(x^{2} - y^{2} ) = -176\sqrt{7} \\(x^{2} - y^{2} )= \frac{-176\sqrt{7}}{22} \\(x + y)(x - y) = -8\sqrt{7}\\ x - y = \frac{-8\sqrt{7}}{4} = -2\sqrt{7}[/tex]

Find the Volume of the Pyramid

Answers

Answer:

75600

Step-by-step explanation:

The table below shows the survey results for six randomly selected lions from five different zoos.
Gender No. of Offspring Age, years
This data set contains
three variables, two of which are categorical
Othree variables, all of which are categorical
Othree variables, none of which are categorical
three variables, one of which is categorical

Answers

Answer:

Correct option: fourth one

Step-by-step explanation:

We can see in the table that we have three variables: the gender of the lion, the number of offspring and the age in years.

From these three variables, the gender is a categorical variable, because it can only assume a finite number of values (in this case, 2 values: M or F)

The other two variables (no. of offspring and age) can theoretically assume an infinite number of values (any non-negative integer number).

So the correct option is the fourth one: three variables, and one of them is categorical.

What are the solutions of the equation (x – 3)2 + 2(x – 3) – 8 = 0? Use u substitution to solve.

Answers

Answer:

u=5

Step-by-step explanation:

(u-3)2+2(u-3)-8=0

2u-6+2u-6-8=0

4u-20=0

4u=20

u=5

Answer:

b on edge2020

Step-by-step explanation:

At breakfast, restaurant charges $2 for the first cup of orange juice and then $1 for each refill which graph represents this situation i need help ASAP

Answers

Answer:

line

Step-by-step explanation:

y= 2+(x-1)*1= x+1

y=x+1

linear function, the graph is going to be a line

Answer:

line

Step-by-step explanation:

Help MATH find the volume?

Answers

Answer:

4914 yd³

Step-by-step explanation:

Volume= base*height

Base= 1/2*18*√18²-9²= 140.30 yd²

Height= 35 yd

V=140.40*35= 4914 yd³

Enter the equation of the circle described below.
Center (0,4), radius V3

Answers

Answer:

The equation is:

[tex](x - 0)^2 + (y - 4)^2 = 3[/tex]

Step-by-step explanation:

The equation of a circle:

[tex](x - h)^2 + (y - k)^2 = r^2[/tex]

(where [tex](h, k)[/tex] represents the center and [tex]r[/tex] the radius).

-Use the given center and radius for the equation of a circle:

[tex](x - 0)^2 + (y - 4)^2 = \sqrt{3} ^2[/tex]

After, you have the equation of a circle written, simplify the radius by the exponent [tex]2[/tex]:

[tex](x - 0)^2 + (y - 4)^2 = 3[/tex]

So now, you have found the equation of a circle.

Answer:

(x)^2 + (y - 4)^2 = 3

(it could also be (x - 0)^2 + (y - 4)^2 = 3 but you can drop the zero by the x and just have it like: (x)^2 + (y - 4)^2 = 3)

Find the distance around a circle with a diameter of 15.6 meters

pls hurry up I'm timed:)

Answers

48.984 meters

Step-by-step explanation:

The distance around a circle is called the circumference, the formula for the circumference is...

[tex]C=\pi d[/tex]

OR

[tex]C=2\pi r[/tex]

Since we have the diameter we will be using the first one.

[tex]C=3.14*15.6[/tex]

[tex]C =[/tex]

48.984 meters.

Using the Quadratic Formula, which of the following is the solution to the quadratic equation x2 + 2x - 3 = 0?

Answers

Answer: x=1 or x=-3

Step-by-step explanation:

Quadratic formula is [tex]-b+-\sqrt{b^{2}-4ac } /2[/tex]

a=1 b=2 c=-3

Substitute

[tex](-2+-\sqrt{2^{2}-4(1)(-3) }) /2\\(-2+-\sqrt{4+12}) /12\\(-2+-\sqrt{16}) /2\\(-2+-4) /2\\x=\frac{-2+4}{2} \\x=\frac{-2-4}{2} \\\\\\Simplify\\x=\frac{2}{2} \\\\x=\frac{-6}{2} \\\\Simplify\\x=1\\x=-3[/tex]

HELPPPPPP PLZ. Work must be shown for this problem. Solve for x. Round answers to the nearest hundredth (2 decimal places).

Answers

Answer:

About 238.07 miles

Step-by-step explanation:

The tangent of an angle is equivalent to the length of the opposite side divided by the length of the adjacent side. Therefore:

[tex]\tan 38=\dfrac{186}{x} \\\\x=\dfrac{186}{\tan 38}\approx 238.07[/tex]

Hope this helps!

Simplify 9 - {x - (7 + x)}

Answers

Let's simplify step-by-step.

9−(x−(7+x))

Distribute the Negative Sign:

=9+−1(x−(7+x))

=9+−1x+(−1)(−7)+−1(−x)

=9+−x+7+x

Combine Like Terms:

=9+−x+7+x

=(−x+x)+(9+7)

=16

How much would $120 invested at 6% interest compounded monthly be
worth after 21 years? Round your answer to the nearest cent.


Answers

The correct answer would be D !m
The answer is D $271.20

Which situation is best met through long-term saving?
OA.
a broken refrigerator
B.
retirement
C.
an unexpected car repair
D.
an unexpected medical bill

Answers

Answer:

It is most likely B

Step-by-step explanation:

I know that D is incorrect, so I assume A and C would be as well since they're similar. Also, money toward retirement is taken out of paychecks at your jobs, so I think it is B

Answer:

retirement

Step-by-step explanation:

Which kind of exercise improves both muscular strength and muscular endurance?
aerobic
isometric
isotonic
isokinetic

Answers

 I’m probably wrong but I Think its isometric.

I might be wrong but it’s the third one probably

Please help with this

Answers

Answer:

C

Step-by-step explanation:

Given: ABCD is a square.
Put a checkmark in every box that must be
true. You will put more than one checkmark.
Has two pairs of parallel sides
Has exactly one pair of parallel sides
All four sides are congruent
Has exactly one pair of congruent sides
Both pairs of opposite sides are congruent
Two pairs of consecutive sides
(but not all four sides) are congruent
There are right angles at all four vertices
The diagonals are perpendicular
The diagonals are congruent
The diagonals bisect each other​

Answers

Answer:abc about

Step-by-step explanation: all of them are bad

Answer:

The answers are:

Has two pairs of parallel sides

All four sides are congruent

Both pairs of opposite sides are congruent

There are right angles at all four vertices

The diagonals are perpendicular

The diagonals are congruent

The diagonals bisect each other​

At the end of a year, the gross debt of a country stood at about $25 trillion. Express this amount in dollars per person, assuming that the population of the country is about 314 million

Answers

Answer:

$79,617.83 per person

Step-by-step explanation:

$25,000,000,000,000 / 314,000,000 = $79,617.83 per person

The amount of debt per person is $79,617.83.

The total debt is $25 trillion and the number of people in the country is 314 million.

The debt per person is:

= Total debt / population

= 25,000,000,000,000 / 314,000,000

= $79,617.83

The amount of debt per person is therefore $79,617.83.

Find out more at https://brainly.com/question/16757605.

help please trying to get my gade up. show work please. ASAP

Answers

Answer:

8.94

Step-by-step explanation:

with a right triangle, you can use the Pythagorean Theorem, a^2 + b^2 = c^2

if you put in the values that you have, which are 8 and 4 into the equation, you get 8^2 + 4^2 = c^2

Now simplify, and you get 16 + 64 = c^2 which can then be further simplified to 80 = c^2

To get the value c all by itself, you have to square both sides. Square root of 80 becomes 8.94, and square root of c^2 becomes just a 'c'.

Therefore, you get 8.94 = c, meaning that the missing length (hypotenuse) is 8.94 units long.

Answer:

8.94

Step-by-step explanation:

Mr. Tram was planning his trip from Dallas, TX to Detroit, MI. He knows that the total distance he needs to cover is 1620 km. He usually drives at a speed of 60 km per hour. If he is willing to drive up to 8 hours per day, how many days and how many hours will this trip take?

Answers

Answer:

3 days and 3 hours

Step-by-step explanation:

lets find how many total hours he will need to spend to get to Detroit

1620/60=27

Lets find how many days will it take Mr. Tram to get to Detroit if he is willing to drive only for 8 hours each day.

27/8=3 3/8

3 days and 3 hours

Answer:

3 days and 3 hours

1620/60=27 amount of hours it will take to get to Detroit

27/8=3 3/8 if he wants to drive for only 8 hrs each day

3 days and 3 hours is the final answers

:-)

Which of the following options have the same value as 60% of 94?

Answers

The answers are B, C, and E

So the right options are:

Option Boption COption E

Please see the attached picture for full solution

Hope it helps

Good luck on your assignment

Else made enough strawberry jam to fill 4 1/3 jars. If she made 3 times as much apricot jam as strawberry jam, how many jars of jam did she make altogether?

Answers

Answer:

17 1/3

Step-by-step explanation:

Total number of Jar she make is [tex]17\frac{1}{3}[/tex] jar

Numbers based sums:

Given that;

Number of strawberry jam jar = [tex]4\frac{1}{3}[/tex] jars

Number of apricot jam jar = 3(Number of strawberry jam jar)

Find:

Total number of Jar she make

Computation:

Given problem is Sum base problem.

Number of apricot jam jar = 3(Number of strawberry jam jar)

Number of apricot jam jar = 3([tex]4\frac{1}{3}[/tex])

Number of apricot jam jar = 3(13/3)

Number of apricot jam jar = 13 jar

Total number of Jar she make = (13/3) + 13

Total number of Jar she make = [tex]17\frac{1}{3}[/tex] jar

Find out more information about 'Sum based problem':

https://brainly.com/question/537797?referrer=searchResults

ANSWER ASAP!! I GIVE BRAINLIEST!!

Do not do #1 but plz answer the rest
show work ​

Answers

2. 3x - 5y = -2

   x + 3y = 4

   Let us multiply equation 2 by three, so we can use the elimination method.

   3x + 9y = 12

   Now, let us subtract equation 1 from equation 2.

   3x + 9y - 3x + 5y = 12 + 2

   14y = 14

   y = 1

   Let us substitute this value of y in equation 2.

   x + 3(1) = 4

   x = 4 - 3

   x = 1

3. -3x + 3y = -6

   6x + 4y = 42

   Let us multiply equation 1 by 2, so we can use the elimination method.

   -6x + 6y = -12

   Let us now add equations 1 and 2, so as to eliminate x.

   6x + 4y -6x + 6y = 42 - 12

   10y = 30

   y = 3

   Let us now substitute this value of y in equation 1, so as to find x.

   -3x + 3(3) = -6

   -3x + 9 = -6

   -3x = -15

   3x = 15

   x = 5

4. 12x + 4y = 20

   2x - 2y = -2

   Let us multiply equation 2 by 2, so as to use the elimination method.

   4x - 4y = -4

   Let us now add equations 1 and 2, so as to eliminate y.

   4x - 4y + 12x + 4y = -2 + 20

   16x = 18

   x = [tex]\frac{18}{16}[/tex] = [tex]\frac{9}{8}[/tex] = 1.125

   Let us substitute this value of x in equation 2, so as to find y.

   2(9/8) -2y = -2

   9/4 - 2y = -2

   -2y = -2 - 9/4

   2y = 17/4

   y = [tex]\frac{17}{8}[/tex] = 2.125

The number of light bulbs sold each day in two different hardware stores is represented in the box-and-whisker plots below.


Which store's median number of light bulbs sold is greater?

A.

Store A

B.

Store B

C.

both the same

D.

cannot tell from given plots

Answers

Answer:

A. Store A

Step-by-step explanation:

The median is shown by the very middle line of the box. The middle-most line on the box of store A is greater than that of Store B

Billy just received $10 for his birthday and immediately spent $2.50 on a
pack of baseball cards. He then wants to buy some boxes of candy that cost
$1.50 each.
If Billy has $7.50 remaining, which of the following equations will give you
the number of boxes, X, that Billy could buy?

Answers

Answer:

Step-by-step explanation:

$10-$2.50=$7.50

$7.50/ $1.50 = 5

Answer:

5

Step-by-step explanation:

What is the value of y?

Answers

Answer:

hai

a triangle's sum of interior angels is equal to 180°.

so we have this equailty

y+10°+50+2y = 180

3y+60° = 180.

to solve better, im throwing 60 near 180. 60° is going to be -60 cause of it.

3y=180-60 = 3y=120

now im dividing both 3. because both can divide by 3.

3y/3 = 120/3 = y=40

good luck(:

Answer3.9
3. Elizabeth buys 2 drinks. She has
a coupon for $0.75 off. How much
must Elizabeth pay?

Answers

Answer:

How much do the drinks cost? Add them together and take away .75

Step-by-step explanation:

So many pointssss help meeeee
Ashley is comparing three investment accounts offering different rates.
Option A: APR of 4.95% compounding monthly
Option B: APR of 4.85% compounding quarterly
Option C: APR of 4.895% compounding daily
She would like to earn at least a 5% annual yield. Which account(s) will give Ashley the yield
she wants?
A. Options A and B only
B. Option B only
C. Options A and C only
D. Option C only

Answers

The correct answer is C. Options a and c are true facts and answer B is false information
Other Questions
A cell phone plan costs $200 to start. Then there is a $50 charge each month. Write an equation relating the cost, y, and then number of months, x. Develop an argument from evidence on how human activity can lead to ocean acidification? Further explain what we can do, as humans, to decrease the amount of ocean acidification occurring in aquatic environments. what are chemical contaminants homemade soap restaurant grade cleaners alcohol recreational drugs After collecting the data, Christopher finds that the total snowfall per year in Reamstown is normally distributed with mean 94 inches and standard deviation 14 inches. What is the probability that, in a randomly selected year, the snowfall was greater than 52 inches? Use the empirical rule. Provide the final answer as a percent rounded to two decimal places. What is the volume, to the nearest whole cubic inch, of a cylinder with a height of 10 inches and a radius of 8 inches? Use* = 3.14 and round your answer to the whole number.cubic inches When six is subtracted from five times a number, the result is 9 Please help!! Find the solution(s) to the system of equations represented in the graph. find the area of a shape shown I WILL MARK BRAINLIEST, work out the value of.. 1+2/3+4/5+6 In a recent survey of 200 elementary students, many revealed they preferred math than English. Suppose that 80 of the students surveyed were girls and that 120 of them were boys. In the survey, 60 of the girls, and 80 of the boys said that they preferred math more.Required:a. Calculate an 80% confidence interval for the difference in proportions.b. What is the standard error of the difference in the probability between that girls prefer math more and boys prefer math more?1. 0.40972. 0.00423. 0.08334. 0.0647734c. What is the difference in the probability between that girls prefer math more and boys prefer math more?1. 0.08332. 0.53. 0.00424. 0.4097 Read the sentence. If someone refuses to learn how to do something, people will never develop new skills, and will struggle to get through life. Which word or phrase best replaces the underlined part of the sentence to remove a logical fallacy? that person the public students children the length of a rectangular park excerdees its width of 17m if the perimeter of the park find the dimension of the park Kant's famous First Formulation of the Categorical Imperative reads:Act only according to that maxim whereby you can at the same time will that it should become a universal law. Kant taught morality as a matter of following maxims of living that reflect absolute laws. "Universal" is a term that allows for no exceptions, and what is universal applies always and everywhere.Lying, for any reason, is universally wrong. Be sure to listen to Kant's audio lecture before posting this week! So, consider the famous case of the Crazed Murderer. In your town the Crazed Murderer comes to your door looking for your friend and wanting to kill him.You know that your friend went home to hide. What do you tell the murderer? When he leaves and runs up the street to your friend's house, what do you do? How are the choices of Saudi women limited by the countrys customs?Women must only be wives and mothers.Women may not take part in the hejira.Women may only work at jobs with other women.Women must spend all of their free time visiting relatives. What is the best way to increase your HDL (high density lipoprotein) levels?1) stress reduction2) aerobic exercise3)stop smoking4) weightlifting The beaks of finches found on various Galpagos Islands differed based on ? If you are swimming upstream (i.e., against the current), at what speed does your friend on the shore see you moving? hi please answer this a.Cules son las coordenadas del punto D? Which statement about most narrative poetry is true? It usually focuses on few key characters. It usually focuses on few key rhymes. It usually focuses on few images. It usually focuses on expressing emotions.