4x2 - 7 + 2x - 3x² + 8x - 6

Answer:

5.94

Step-by-step explanation:

To find the mean, you need to add the numbers and divide it by however many numbers you have.

4.7 + 4.2 + 8.2 + 9.5 + 3.1 = 29.7

There are 5 numbers, so divide the sum by 5

29.7/5 = 5.94

The mean of the data set 4.7, 4.2, 8.2, 9.5, 3.1 will be 5.94.

The mean is the straightforward meaning of the normal of a lot of numbers.

The data set is given below.

4.7, 4.2, 8.2, 9.5, 3.1

Then total number of the term are 5.

Then the mean will be

Mean = (4.7 + 4.2 + 8.2 + 9.5 + 3.1) / 5

Mean = 29.7 / 5

Mean = 5.94

More about the mean link is given below.

https://brainly.com/question/521501

#SPJ2

Answer:

They are both correct because there is more than one way to write a multivariable polynomial in standard form. Marcus has the exponents on the x variable in descending order from the highest degree to the lowest degree. Ariel has the exponents on the y variable in descending order from the highest degree to the lowest degree.

Sample Response: They are both correct because there is more than one way to write a multivariable polynomial in standard form. Marcus has the exponents on the x variable in descending order from the highest degree to the lowest degree. Ariel has the exponents on the y variable in descending order from the highest degree to the lowest degree.

Answer:

Length = 36

Width = 52

Step-by-step explanation:

Area of rectangle = Length * width

Length = L ; Width = W

Area (A) = 1872 ft²

Ratio L:W = 9:13

Hence,

1872 = lw - - - (1)

l/w = 9/13 - - - (2)

From (2)

13l = 9w

l = (9/13)w - - (3)

Put (3) into (1)

1872 = (9/13)w * w

1872 = 9/13 w²

24336 = 9w²

24336 / 9 = w²

2704 = w²

w = 52

If w = 52

1872 = 52 * l

l = 1872 / 52

l = 36

Length = 36

Width = 52

Answer:

Option 1 , 2 & 5

Step-by-step explanation:

4 & 16 are perfect squares. So , 1/4 & 1/16 are also perfect squares. But 2 , 8 & 10 are not perfect squares. So root of 1/2 , 1/8 & 1/10 are irrational numbers.

Verification :-

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

Hence , it is irrational.

2)[tex] \sqrt{ \frac{1}{8} } = \frac{ \sqrt{1} }{ \sqrt{8} } = \frac{1}{2 \sqrt{2} } [/tex]

So , it is irrational.

3)[tex] \sqrt{ \frac{1}{16} } = \frac{ \sqrt{1} }{ \sqrt{16} } = \frac{1}{4} [/tex]

So , it is rational.

4) [tex] \sqrt{\frac{1}{4} } = \frac{ \sqrt{1} }{ \sqrt{4} } = \frac{1}{2} [/tex]

So it is rational.

5) [tex] \sqrt{ \frac{1}{2} } = \frac{ \sqrt{1} }{ \sqrt{2} } = \frac{1}{ \sqrt{2} } [/tex]

Hence it is irrational.

Answer:

751 cupcakes must be sold to make a profit

Step-by-step explanation:

From the question we are told that

Annual cost= $1,500 per year plus a cost of $1 per cupcake

Each cup cake sell at $3

Generally the profit off the top of each cupcake is $2

Therefore

  [tex]\frac{1500}{2}=750[/tex]

This implies that 750 cupcakes will be sold to cover the annual cost excluding cupcake cost

Generally

751 cupcakes=$1502

Total Annual cost to make a profit

[tex]1(cost\ of\ each\ cupcake)*751+1500=\$2251[/tex]

Total Annual sale

[tex]3(sale of each cupcake)*751=\$2253[/tex]

Mathematically

[tex]2253\$-2251\$=2\$[/tex]

Therefore

751 cupcakes must be sold to make a profit

Answer:

divide the monthly payments by the hire purchase

Step-by-step explanation:

this may be what your asking

Answer:

i need this for a challenge

Step-by-step explanation:

Answer:

45

Step-by-step explanation:

im good, u?

Answer:

[tex] {c}^{2} = {a}^{2} + {b}^{2} \\ {c}^{2} = ({7 \sqrt{2}) }^{2} + ( {7 \sqrt{2} ) }^{2} \\ {c}^{2} = 2(49 \times 2) \\ {c}^{2} = 196 \\ c = \sqrt{196} \\ c = 13 \: units[/tex]

Step-by-step explanation:

Since Castel sold 6 apple pies and 4 lemon meringue pies for $80, we have 6x + 4y = $80.

Also Gabriella sold 6 apple pies and 5 lemon meringue pies for $94, we have 6x + 5y = $94.

6x + 5y = $94

- (6x + 4y = $80)

=> y = $14.

Therefore 6x + 5($14) = $94, 6x = $24, x = $4.

Hence each apple pie costs $4 and each lemon meringue pie costs $14.

Answer:

No, x and y are not proportional

The value of card in 2006 = $38.05

Step-by-step explanation:

I got this! I hope this helps!

Answer:

6(x+2)=66

6x+12=66 -12

6x= 54 :6

x=9

Step-by-step explanation:

prove me wrong

Answer:

I think it should be 4+ .20 = 10 so A or B maybe you wrote it out wrong

so the answer is A or B because you have to divied and A and B are the same  he would end up sending 50 msg

Answer: B The integer with the greatest value is one that is farthest from zero on the number line.

Step-by-step explanation: hope it correct :D

Answer:

15%

Step-by-step explanation:

Percent Error formula is the difference between the Actual and the guess value    divided by the actual.

So it's 198- 172  /  172  x 100

= 15%

Answer:

(20,0)

Step-by-step explanation:

I think that's it sorry if I am wrong:(

Answer:

81

Step-by-step explanation:

4/9=36/81

Answer:

47.5

Step-by-step explanation:

33+62=95

95/2=47.5

Answer:

I got

y=3/5x -39/5

Step-by-step explanation:

Hope this helps

Answer:

10 days

Step-by-step explanation:

The Smith family is looking to rent a large truck for their upcoming move. With Rose's Moving, they would pay $40 for the first day plus $6 per additional day. With Riverside Rent-a-Truck, in comparison, the family would pay $90 for the first day plus $1 per additional day. Before deciding on which company to use, Mrs. Smith wants to find out what number of additional days would make the two choices equivalent with regards to cost. How many additional days would that be?

Let the number of additional days = x

With Rose's Moving, they would pay $40 for the first day plus $6 per additional day.

40 + 6x

With Riverside Rent-a-Truck, in comparison, the family would pay $90 for the first day plus $1 per additional day.

90 + x

Comparing both

40 + 6x = 90 + x

6x - x = 90 - 40

5x = 50

x = 50/5

x = 10

The number of additional days = 10 days

Answer:

Please see explanation

Step-by-step explanation:

A system of linear equations in two variables represents two lines on graph.

When both the lines have same slope, there can be two cases

When two lines have same slope and different y-intercepts, that means that both lines are parallel and parallel lines have no solution.

When the slope of both lines is same and the y-intercept is also same, this means that both the equations refer to the same line. This means that the system has infinite number of solutions.

Answer:

−4x3+6x2−x

Step-by-step explanation:

(−x)(4x2−6x+1)

=(−x)(4x2+−6x+1)

=(−x)(4x2)+(−x)(−6x)+(−x)(1)

=−4x3+6x2−x

Answer:

d should be correct

Step-by-step explanation:

prove me wrong

Answer:

b

Step-by-step explanation:

Answer:

It is the last option.

Step-by-step explanation:

Answer:

f(x)=525+4.75x

Answer:

16.67%

Step-by-step explanation:

The customer spent a total of $18 on a $15 meal. This means that, if counting tax within the $15 meal, the tip is $3.

Divide 3 with the total cost:

3/18 = ~0.1667

Change to percentage. Simply move the decimal point to the right two place values, and add a percentage sign:

0.1667 to a percent = 16.67%

16.67% is your answer.

~

Answer:

1.6 %

Step-by-step explanation:

15/18= 8.4

Answer:

x = 26, y = 19

Step-by-step explanation:

Since the triangles are similar then the ratios of corresponding sides are equal, that is

[tex]\frac{ST}{NP}[/tex] = [tex]\frac{RS}{MN}[/tex] , substitute values

[tex]\frac{x}{13}[/tex] = [tex]\frac{32}{16}[/tex] = 2 ( multiply both sides by 13 )

x = 26

and

[tex]\frac{MP}{RT}[/tex] = [tex]\frac{MN}{RS}[/tex] , substitute values

[tex]\frac{y}{38}[/tex] = [tex]\frac{16}{32}[/tex] = [tex]\frac{1}{2}[/tex] ( cross- multiply )

2y = 38 ( divide both sides by 2 )

y = 19