Which is not a rational number?

(4x³ + 9xy + 8y) - (3x³ + 5xy - 8y) =

= 4x³ + 9xy + 8y - 3x³ - 5xy + 8y =

= 4x³ - 3x³ + 9xy - 5xy + 8y + 8y =

= x³ + 4xy + 16y ← the end answer

Answer:

D. none

Step-by-step explanation:

to figure out if the point is on the graph, take the x value and plug it in to the x coordinate, do the same for y. if the values truly add up to 2, then it is on the graph. Since none of the values add up to 2, they are not on the graph.

Step-by-step explanation:

sin (A + B) = 1 =sin 90

A+B=90 equation 1

cos (A - B) = 1=cos 0

A-B=0 equation 2

add 1 and 2

2A=90 A=45

2B=90 B=45

Answer:

please one times search answer in search engines ok

Step-by-step explanation:

1 - 5 is not equal to 8

2 - 16 is not equal to 8

3 - 12 is equal to 12

4 - 5 is not equal to 17

5 - 0 is not equal to 4

Answer:

-8x(8yz)(-8)

Step-by-step explanation:

(-2x^2yz^-2)4

-8x(8yz)(-8)

Answer:

9.00002 and 0.009 igs I am trying my best to understand lol

Answer:

3. 72

4. 48

5. 56

6. 18

7. 45

8. 48

9. 9

10. 6

11. 11

12. 10

13. 7

14. 5

Dividing the segments and finding the lengths, it is found that the distance between the two cities is of 130 miles.

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[tex]ad = ab + bc + cd[/tex]

--------------------------------

[tex]ab = 5bc[/tex]

In terms of x, [tex]bc = x, ab = 5x[/tex]

--------------------------------

[tex]bc = 2cd[/tex]

In terms of x, [tex]cd = \frac{x}{2}[/tex]

--------------------------------

[tex]\frac{x}{2} = 10[/tex]

[tex]x = 20[/tex]

--------------------------------

[tex]bc = x = 20[/tex]

[tex]ab = 5x = 5(20) = 100[/tex]

--------------------------------

[tex]ad = ab + bc + cd = 100 + 20 + 10 = 130[/tex]

The distance between the two cities is of 130 miles.

A similar problem is given at https://brainly.com/question/24352869

Let it be x

He spent x/2 dollars then

[tex]\\ \sf\longmapsto \dfrac{x}{2}+8=13[/tex]

[tex]\\ \sf\longmapsto \dfrac{x+16}{2}=13[/tex]

[tex]\\ \sf\longmapsto x+16=13(2)=26[/tex]

[tex]\\ \sf\longmapsto x=\dfrac{26}{16}[/tex]

[tex]\\ \sf\longmapsto x=\dfrac{13}{8}[/tex]

[tex]\\ \sf\longmapsto x=1.6\$[/tex]

[tex]\\ \sf\longmapsto Weekly allowance=13+7(1.6)[/tex]

[tex]\\ \sf\longmapsto 13+112=125[/tex]

Graphs are used to show the relationship between two variables. In the given graph, as the value of x increases, the value of y decreases.

Given that:

[tex]y = \frac{10}{x}[/tex]

The above function is an inverse function.

This means that:

As the value of x increases, the value of y decreases

Take for instance:

[tex]x= 1[/tex]

[tex]y = \frac{10}{1} = 10[/tex]

Now, [tex]x = 2[/tex]

[tex]y = \frac{10}{2} = 5[/tex]

Notice that:

As x increases from 1 to 2, the corresponding values of y decreases from 10 to 5

Hence, (b) is correct

Read more about graphs at:

https://brainly.com/question/1971145

Answer:

Step-by-step explanation:

Original equation

    √x+6-4 = x

   Isolate

    √x+6 = 4+x

Raise both sides to the second power

    (√x+6)2 = (4+x)2

    After squaring

    x+6 = x2+8x+16

Rearranged equation

    x2  + 7x  + 10 = 0

    This equation has two rational roots:

      {x1, x2}={-2, -5}

Original equation, root isolated

    √x+6 = 4+x

    Plug in  -2 for  x  

     √(-2)+6 = 4+(-2)

     Simplify

     √4 = 2

     Solution checks !!

    Solution is:

     x =  -2

Original equation, root isolated

    √x+6 = 4+x

    Plug in  -5 for  x  

     √(-5)+6 = 4+(-5)

     Simplify

     √1 = -1

     Solution does not check

     1 ≠ -1  

Answer:

3x2-12x+y

Step-by-step explanation:

2x-6y+3x2+7y-14x

3x2 can't combine with anything

combine the 2x and -14x to get -12x

combine the -6y and 7y to get y

Answer:

56 M

Step-by-step explanation:

Reduce fractions to their lowest terms equivalents

Multiply the numerators and denominators of the fractions separately

[tex]\frac{7}{15}[/tex] * 120 = convert to fraction

[tex]\frac{7}{15}[/tex] * [tex]\frac{120}{1}[/tex] = convert to fraction

[tex]\frac{7 * 120}{15}[/tex] = apply fraction rule  [tex]\frac{a}{b}[/tex] * [tex]\frac{c}{d}[/tex] = [tex]\frac{a * c}{b * d}[/tex]

[tex]\frac{7 * 120}{15 *1}[/tex] = apply rule a * 1 = a  15 * 1 = 15

[tex]\frac{120}{15}[/tex] = 8 divide the numbers

7 * 8 = 56 multiply the numbers

Answer:

12k^2 + 23k - 9

 A store advertises,

"Buy one and get one half off"

Which means if we buy one, half the price of one will be discounted.

In other words "50% discount on each item we buy"

We will $440 for 10 skates.

Original cost of skates = $88

After 50% discount price of one skate = $88 - $44 = $44

Cost of 10 pairs of skates = 44 × 10

                                           = $440

     Therefore, we will pay $440 for 10 skates.

Learn more,

https://brainly.com/question/11823881

Answer:

Step-by-step explanation:

See the picture below

Answer:

in radian measure

theta=length of arc /radius

so a=l/r

a=56/70

a=4/5

Step-by-step explanation:

a= theta angle in radian

All the elements of the given set {2,4,8,...,256} are - {2, 4, 8, 16, 32,64, 128, 256} that are total 8 in numbers.

The set is formed by the number of objects in a particular manner, these objects are called elements of the set. The elements of the set are written inside a curly bracket separated by a comma in a particular or specific order.

There are two methods to represent the set and its elements that are:

in this case, {[tex]2^{1},2^{2},2^{3},2^{4},2^{5},2^{6},2^{7},2^8[/tex]} as we know,

so the set notation would be :

= {x:x = [tex]2^{n}[/tex], n∈N and 1 ≤ n ≤ 8}

The listing method:  {2, 4, 8, 16, 32,64, 128, 256}\

Thus, the above mention set is all the elements of the set.

Learn more about set notation:

https://brainly.com/question/24239496

Answer:

y = -3/4x + 14

Step-by-step explanation:

The slope of a perpendicular line is the opposite reciprocal of the original line.

4/3x -> -3/4x

Now we need to find the y-intercept and we can do that by using the slope intercept form expression [ y = mx + b ].

11 = -3/4(4) + b

11 = -3 + b

14 = b

Put everything we know and solved for back into the expression.

y = -3/4x + 14

Best of Luck!

Answer:

200000 gallons

Step-by-step explanation:

Answer:

please give options for answer.

Answer:

Step-by-step explanation:

Write 34 in tens and units.

34 = 30 + 4

9(30 + 4)

9 * 30 = 270

9* 4 = 36

270 + 36 = 306

After awhile if your practice enough, you can do them in your head.

Answer:

cual es? ósea la pregunta?

Answer:

The lines on the number line represent the factors. The product is the arrow

Step-by-step explanation:

my explantion is in the answer ig

Answer:

n = 2; the number equals two

Step-by-step explanation:

n/2 = 2n - 3

2/2 = 2(2) - 3

1 = 4 - 3

1 = 1

n = 2

Here, we need to find the monthly and the weekly growth rate

The monthly growth rate is 99.33 ounces and the weekly growth rate is 22.9 ounces

Weight at birth = 8 ounces

Weight at one year =75 ounces

1 pound = 16 ounces

75 pounds = 1200 ounces

Additional weight after birth = Weight at one year - Weight at birth

= 1200 ounces - 8 ounces

= 1,192 ounces

There are 12 months in a year

Growth rate per month = Additional weight after birth / 12

= 1,192 / 12

= 99.33 ounces per month

There are 52 weeks in a year

Growth rate per week = Additional weight after birth / 52

= 1,192 / 52

= 22.9 ounces per week

Read more:

https://brainly.com/question/20115298

Answer:

ummm I think u want the answer x= 11 1/4

Answer:

x = 45/4

Step-by-step explanation:

4(x - 5) = 25

4x - 20 = 25

4x - 20 + 20 = 25 + 20

4x = 45

4x/4 = 45/4

x = 45/4

Answer:

of a single egg or?

Step-by-step explanation: