Rational Exponent
Explain why the square root of a number is defined to be equal to that number to the 1/2 power.

Answers

Answer 1
The concept of radicals and radical exponents is tricky at first, but makes sense when we look into the logic behind it. 

When we write a radical in exponential form, like writing √x as x^(1/2), we are simply putting the power of the radical in the denominator (bottom number) of the exponent, and the numerator is the power we raise the exponent to, or the power that would be inside the radical. 
In our example, √x is really ²√(x¹), or the square root of x to the first power. For this reason, we write it as x^(1/2).

Let's say we wanted to write the cubed root of x squared, in exponential form. 
In radical form, it would look like this:
³√(x²) . This means we square x, and then take the cubed root.
In exponential form, remember that we take the power of the radical (3), and make that the denominator of the exponent, and keep the numerator as the power that x is raised to (2). 
Therefore, it would be x^(2/3), or x to the 2 thirds power. 

Just like when multiplying by a fraction, you multiply by the numerator and divide by the denominator, in exponential form, you raise your base number to the power of the numerator, and take the root of the denominator. 
Answer 2

Answer:

Sample Response:

Squaring and square root are inverses, so one should "undo" the other. That is, squaring the square root of a number results in the number. Using the power of a power rule, you multiply the exponents. Since a number to the first power is itself, the product of the exponents must equal 1. This means that the power of the square root must be the reciprocal of 2, or one half.

Step-by-step explanation:



Related Questions

which blood type was donates by the largest percent of people?

Answers

The answer is o+ Hope this helped.

The table below represents the distance a person runs as a function of time:
Time distance meters
x f(x)
10 60
13 78
16 96
19 114

he average rate of change of the function between x = 10 to x = 16 is m/s and represents the person's speed. (3 points)

Answers

The given data is

  x   f(x)
---- ------
10   60
13   78
16   96
19   114

f(x) =  distance, m
x = time, s

Between x = 10 to x = 16,
f(x) varies by 96 - 60 = 36 m,
x vaires by 16 - 10 = 6 s.

The average speed is
v = (36 m)/(6 s) = 6 m/s.

Answer: 6 m/s

Segment AB is rotated to form ​ A'B'¯¯¯¯¯¯¯ ​. The coordinates of point A are (1, 5) and the coordinates of point B are (−6, 4) . Which clockwise rotation around the origin results in the transformation of ​ AB¯¯¯¯¯ ​ to form​ A'B'¯¯¯¯¯¯¯ ​?

Answers

It is rotated 180 degrees, and it doesn't matter wether clockwise or counterclockwise. 180 degrees results in the same thing both ways

The correct answer is 180 degrees.

You were assigned to read 5⁄8 of your book. how many sixteenths is that? fraction

Answers

5/8 = 10/16

You just multiply the numerator and the denominator by 2

Hope I helped :)

Four people are painting a house. Zachary paints 1/5 of the house, Alyssa paints 33% of the house, Chloe paints 0.3 of the house, and Nicholas paints 0.17 of the house. Which choice lists the people in order from least to greatest by the amount of the house each painted?

Answers

Nicholas Zachery Chloe Alyssa

Answer:

Nicholas, Zachary, Chloe, Alyssa.

Step-by-step explanation:

Given that Four people are painting a house. Zachary paints 1/5 of the house, Alyssa paints 33% of the house, Chloe paints 0.3 of the house, and Nicholas paints 0.17 of the house.

As such we cannot compare their works to order from least to greatest

Hence we can convert each portion into a decimal thus enabling comparison easier.

Zachary paints [tex]\frac{1}{5} =0.20[/tex] of the house

Alyssa paints [tex]33%=\frac{33}{100} =0.33[/tex] of the house

Chloe paints 0.3 of the house and

Nicholas paints 0.17 of the house.

In ascending order these can be written as

0.17, 0.2, 0.3, 0.33

Hence Nicholas, Zachary, Chloe, Alyssa.

What is the volume if something measures 6.2 cm x 13.7 cm x 26.9 cm?

Answers

2284.886 cubic centimeter.

The calculated volume is 2284.886 cubic centimeters.

The volume of a rectangular prism (or box) is calculated using the formula:

Volume = length x width x height

For the given measurements:

Length (l) = 6.2 cmWidth (w) = 13.7 cmHeight (h) = 26.9 cm

Plug the values into the formula:

Volume = 6.2 cm x 13.7 cm x 26.9 cm

First, calculate the product of the length and width:

6.2 cm x 13.7 cm = 84.94 cm²

Next, multiply this result by the height:

84.94 cm² x 26.9 cm = 2284.886 cm³

Therefore, the volume of the object is 2284.886 cubic centimeters.

Find the sum of all numbers below 1000 that are divisible by 3 or 5

Answers

First of all, stop thinking on the number 10001000 and turn your attention to the number 990990 instead. If you solve the problem for 990990 you just have to add 993,995,996993,995,996 & 999999 to it for the final answer. This sum is (a)=3983(a)=3983

Count all the #s divisible by 33: From 33... to 990990 there are 330330 terms. The sum is 330(990+3)/2330(990+3)/2, so (b)=163845(b)=163845

Count all the #s divisible by 55: From 55... to 990990 there are 198198 terms. The sum is 198(990+5)/2198(990+5)/2, so (c)=98505(c)=98505

Now, the GCD (greatest common divisor) of 33 & 55 is 11, so the LCM (least common multiple) should be 3×5=153×5=15.

This means every number that divides by 1515 was counted twice, and it should be done only once. Because of this, you have an extra set of numbers started with 1515 all the way to 990990 that has to be removed from (b)&(c).

Then, from 1515... to 990990 there are 6666 terms and their sum is 66(990+15)/266(990+15)/2, so (d)=33165(d)=33165

The answer for the problem is: (a)+(b)+(c)−(d)=233168(a)+(b)+(c)−(d)=233168

Simple but very fun problem.

solve this inequality 2(4x-3)≥-3(3x)+5x?

Answers

the first option, x is greater than and equals to 0.5

Answer:

x ≥0.5

Step-by-step explanation:

Given : 2(4x-3)≥-3(3x)+5x.

To find : solve this inequality.

Solution : We have given that

2(4x-3)≥-3(3x)+5x.

Distributes 2 over (4x-3) and -3 over 3x.

8x - 6 ≥ -9x + 5x .

8x - 6 ≥ -4x .

On adding both side by 4x

8x + 4x - 6 ≥ 0 .

12 x - 6 ≥ 0

On adding both sides by 6.

12 x ≥ 6.

On dividing both sides by 12.

x ≥ [tex]\frac{6}{12}[/tex] .

x ≥ [tex]\frac{1}{2}[/tex] .

x ≥0.5.

Therefore, x ≥0.5



Which of the following properties is 5(3 + 2) = 15 + 10 an example of?
associative property
commutative property
multiplicative identity
distributive property

Answers

It's the distributive property. It takes the equation, 15+10 and finds the greatest common factor of 5. it divides both numbers by 5 and puts the 5 outside of the parentheses.

Answer: Distributive property

Step-by-step explanation:

Associative property states that either in addition or multiplication we can changes the position of parenthesis.

That is, a.(b.c) = (a.b).c  or  a+(b+c) = (a+b)+c

Commutative property states that in addition or multiplication we can change the order.

That is, a.b = b.a or a+b = b+a

Multiplicative identity is an element that gives the same number after multiplication.

That is, a × 1/a = 1 ⇒ 1/a is the multiplicative identity of a.

Distributive property lets us multiply a sum by multiplying each addend separately and then add the products.

That is, a(b+c) = a.b + a.c

Thus, it is clear that ,

5(3 + 2) = 5× 3+ 5×2 = 15 + 10  is the example of distributive property.

Two integers with the sum of -17 and the product of 52?

Answers

let the integers be x and y
you have x+y=-17 ---------(1)
xy=52 ---------(2)
from eqn (1) x=-17-y --------(3)
, so subsitute eqn (3) in to eqn(2)
(-17-y)y=52
-17y-y²=52
:
-y²-17y-52=0 same as y²+17y+52=0
y²+13y+4y+52=0
y(y+13)+4(y+13)=0
(y+4)(y+13)=0
therefore y=-4 or -13
now substitute y=-4 or -13 in eqn (3)
x=-17-(-4) or -17-(-13)
x= -13 or -4
so when x=-13 ,y=-4 and when x=-4 ,y=-13

so the integers are -13 and -4

What is the x-intercept of a line that passes through the point (3, 4) and has a slope of 2?

Answers

Y-int = -2
work attached 

i need someones help please?

Answers

y = mx + b

m = slope

plug in 1 and -7 to it's respective places

y (-7) = -2/3(x + 1)

D is your answer

hope this helps


Hey there!

The answer would be y+7= -2/3(x-1)

Hope this helps!

Merry and pippin were working on a project in carpentry class. they needed to cut 4 lengths of 1 5/8 feet from a board. how long must the board be to allow this?

Answers

Attached the solution and work.

Answer:

Hence, the length of board is:

6.5 feet

Step-by-step explanation:

Merry and pippin were working on a project in carpentry class.

They needed to cut 4 lengths of 1 5/8 feet from a board.

That means each of the  piece  is of length 1 5/8 feet which could be written in fraction as:

[tex]1\frac{5}{8}=\dfrac{13}{8} feet[/tex]

Hence, the otal length of the board is addition of length of each board.

i.e.

[tex]\dfrac{13}{8}+\dfrac{13}{8}+\dfrac{13}{8}+\dfrac{13}{8}=4\times \dfrac{13}{8}=\dfrac{13}{2}feet=6.5feet[/tex]

Hence, the length of board is:

6.5 feet

which ordered pair is a solution of the equation y=x-4

Answers

the answer would be y=-4 and x=4, so pick which ever number/letter has this answer.

Answer:

Step-by-step explanation:

y = x - 4

there are so many ordered pairs which are the solution of the given equation.

for example,

x = 0, y = -4

x = 1 , y = -3

x = 2, y = -2

x = 3, y = -1

x = 4, y = 0

x = - 1, y = - 5

x = - 2, y = - 6

x = - 3, y = - 7

x = - 4, y = - 8

The point MegaMarket sold 450 organic pears last season. this season they only sold 360 What was the percent decrease in sales

Answers

First, you would need to determine the difference between last season's pear sales and this season's pear sales.  
450 - 360 = 90

Next, you would need to create an equation to determine what percentage 90 is of 450. Let x represent the unknown sales decrease percentage. 
[tex] \frac{90}{450} [/tex] = [tex] \frac{x}{100} [/tex]

Cross multiply. 
450x = 9,000

Now, all you would need to do is isolate the x. To do this, you would divide both sides of the equal sign by 450. 
x = 20
x = 20%

The percent decrease was 20%.

I hope this helps!


PLZ HELPP ME WITH THIS MATH PROBLEM

Answers

(fog)(x) = f(g(x))

= (1 - 5x^2)^3, all real numbers

answer is B.

given a line whose slope is, m, is -6/5, and passes through point (-5,3), the graph will?

Answers

Using the point-gradient form y - y₁ = m ( x - x₁ )
y₁ = 3;  x₁ = -5;  m =  [tex]- \frac{6}{5} [/tex]

 ⇒  y - 3 =  [tex]- \frac{6}{5} [/tex] ( x - (-5))
 ⇒  y - 3 =  [tex]- \frac{6}{5} [/tex] (x + 5)

Now, you can approach here in two ways: put it in the y-intercept form or the general form.

In the y-intercept form;
      y - 3 = [tex]- \frac{6}{5} [/tex]x + ([tex]- \frac{6}{5} [/tex] (5))
      y - 3 =  [tex]- \frac{6}{5} [/tex]x - 6
           y =  [tex]- \frac{6}{5} [/tex]x - 3

In the general form;
    y - 3 =  [tex]- \frac{6}{5} [/tex] (x + 5)
       by multiplying through by 5
⇒    5 ( y - 3 ) = -6 ( x + 5)
⇒       5y - 15 = -6x - 30
⇒      5y + 6x = -15

∴ the line that passes through (-5, 3), with gradient [tex]- \frac{6}{5} [/tex] is 
 y =  [tex]- \frac{6}{5} [/tex]x - 3 (y-intercept form)  OR  5y + 6x = -15 (general form).

The function y = h(x) is defined as follows:



h(1) =
and h(4) =

Answers

h(1) = 1^3 = 1   (x^3 for 1<=x<=3)
h(4) = 5             (5 for x >3)
 
hope it helps 

Which of the sets of ordered pairs represents a function? (4 points)

A = {(−4, 5), (1, −1), (2, −2), (2, 3)}
B = {(2, 2), (3, −2), (9, 3), (9, −3)}

you can do both or neither as well THX

Answers

neither set of ordered pairs here is a function

Given that a line has a slope of -3 and a point on the line is (2,-4),
1.what is the equation of the line in point-slope form?
2.how do we create slope-intercept form?
*please show all work, step by step.

Answers

The equation in Point Slope Form is

y + 4 = -3(x - 2)

We can convert this to Slope-Intercept Form by isolating y.

y + 4 = -3(x - 2)
y + 4 = -3x + 6
Subbtract 4 from both sides.
y = -3x + 2

The equation in Slope-Intercept Form is y = -3x + 2.

What is the value of N?

-10= N over -0.2

Answers

The answer would be N= -10.2

What is the exact value of cos theta = squareroot 2 over 2?

Answers

ok, so you want us to find theta when [tex]cos(\theta)=\frac{\sqrt{2}}{2}[/tex]
we know from our unit circle that when the angle is 45 degrees, cos(45°)=sin(45°)=[tex]\frac{\sqrt{2}}{2}[/tex]
also we can find this by the special 45-45-90 triangle


when Θ=45°, cos(Θ)=[tex]\frac{\sqrt{2}}{2}[/tex]

PLEASE HELP!!!! WILL MARK THE BRAINLIST!!!! PLEASE PLEASE PLEASE PLEASE PLEASE PLEASE


a) The shoe store manager borrowed $17,000.00 from the bank to purchase 1000 pairs of shoes. The bank charges a simple interest rate of 5% per year on a loan to a business. If it takes 3 years to pay back the loan and interest, what is the total amount of interest that the shoe store will pay? (2 points)


b) What is the total amount, including interest, that the shoe store must pay on the loan? (2 points)


c) How could you use estimation to determine if your answer is reasonable? Explain. (2 points)

Answers

A) 17000*(1+(0.05*3) = 19550

19550-1700 = $2,550 total interest


B)  $19,550 total amount


C) multiply 5 by 3  = 15 than multiply by 17 = 17 * 15 = 255 , then make it a thousands amount by adding a zero at the end


Answer:

A)

p = 17000

r = 5% or 0.05

t = 3

Simple interest formula = p x r x t

Interest paid in 3 years = [tex]17000\times0.05\times3=2550[/tex] dollars

B)

Total amount to be paid = [tex]17000+2550=19550[/tex] dollars

C)

You can first multiply the years and rate that is 5 and 3 to make 15. Then you can multiply by 17. Then put proper decimals as per the values.

The relation of this set of points is a function. True or false.

{(−2, 6), (4, 5), (3, −3), (6, 9), (4, −4)}

Question 1 options:
True
False
Save

Answers

Just graph it... Firstly though, do you know what a function is?
Google linear function, parabolic function, exponential function etc. to get familiar with what a function looks like.

Firstly, no function that I know has
(4, 5) and (4, -4) where there are two y coordinates for 1 x coordinate.
It is not linear, parabolic, or exponential, it could be some other type of function. But assuming you're in high school i'd say its safe to bet the answer is FALSE.

The total number of people at a football game was 5600. field-side tickets were 40 dollars and end-zone tickets were 20 dollars. if the total amount of money received for the tickets was 132000 how many of each kind of ticket were sold.

Answers

There were 6600 endzone tickets sold and 165 field-side tickets sold.

Jesse ate 100 donughts i 5 days each day she ate 6 more then the day before how many did she eat each day

Answers

506. donuts


hoped it helped! :D



Find the 31st term of the following sequence.

9, 15, 21, ...

Answers

Notice that the above sequence is arithmetic because the common difference: d is constant.

d = second term - first term.

= 15 - 9

= 6

The general term of an arithmetic sequence is,

a_{n} =a_{1} +(n-1)d

Where , nth term = [tex] a_{n} [/tex]

[tex] a_{1} [/tex] = First term

and d = common difference.

The given sequence is: 9, 15, 21, ...

Here a_{1} = 9,

d = 6

We need to find the 31st term. So, n = 31.

Next step is to plug in these values in the above formula. Therefore,

[tex] a_{31} =9 +(31-1)*6 [/tex]

= 9 + 30* 6

= 9 + 180

= 189

So, 31st term of this sequence is 189.

Hope this helps you.

Answer:

189

Step-by-step explanation:

Each of ten tickets is marked with a different number from 1 to 10 and put in a box. if you draw a ticket from the box, what is the probability that you will draw 2, 8, or 4?

Answers

10% would be you chance of get one of those numbers but together its 30%

Answer: [tex]\dfrac{3}{10}[/tex]

Step-by-step explanation:

Given : Each of ten tickets is marked with a different number from 1 to 10 and put in a box.

i.e. The total number of outcomes : 10

Favorable outcomes : 2, 8, or 4

i.e. Number of favorable outcomes = 3

Now, the probability that you will draw 2, 8, or 4 is given by :-

[tex]=\dfrac{\text{Number of favorable outcomes}}{\text{Total outcomes}}\dfrac{3}{10}[/tex]

There are currently 58 million cars in a certain country, increasing exponentially by 5.5% annually. how many years will it take for this country to have 79 million cars? round to the nearest year.

Answers

79/58=e^0.055t
1.3620690=e^0.055t
ln 1.3620690=ln e^0.055t=0.055t ln e=0.055t
t=5.6183 years
☺☺☺☺

Please help with these questions thank you.

Answers

1.D
2. B
3.A
these should be correct
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