Given the equations below what is the value of n/m?
m-6(n+2)=-8
6n+m=16

Answer:

After thirty days with the mentioned use the cost of the device is R$ 507,00.

Step-by-step explanation:

We first need to calculate its total power consumption over the 30 days. Since its turned on four times a day for 2 h and 36 min each, we need to multiply this time by 4 to have the time it's turned on in a day and multiply that by 30 to calculate its total power consumption. Although, we need to convert the time from hours and minutes to only hours, to do that we divide the minutes part by 60 and sum it on the hour part. All of this is done below:

[tex]t = 2 + \frac{36}{60} = 2.6 \text{ h}[/tex]

[tex]\text{dayly time} = 4*t = 4*2.6 = 10.4 \text{ h}[/tex]

[tex]\text{monthly time} = 30*\text{dayly time} = 30*10.4 = 312\text{ h}[/tex]

[tex]\text{total power consumption} = \text{monthly time}*6500 = 312*6500\\\text{total power consumption} = 2028000 \text{ W} = 2028 \text{ kW}[/tex]

[tex]\text{total cost} = \text{total power consumption}*0.25\\\text{total cost} = 2028*0.25\\\text{total cost} = 507[/tex]

After thirty days with the mentioned use the cost of the device is R$ 507,00.

Answer:

If you meant 3.5 then its 3.5.

Answer:

see below

Step-by-step explanation:

The lines in between 2 and 3 are splitting it up into 5ths and because the arrow is pointing to the fourth one the answer is [tex]2\frac{4}{5}[/tex].

Answer:

A. 2x+6   is the correct answer

Answer:

x = 28

y = 32

Step-by-step explanation:

3

4

(x−12)=12

(

3

4

)(x)+(

3

4

)(−12)=12(Distribute)

3

4

x+−9=12

3

4

x−9=12

Step 2: Add 9 to both sides.

3

4

x−9+9=12+9

3

4

x=21

Step 3: Multiply both sides by 4/3.

(

4

3

)*(

3

4

x)=(

4

3

)*(21)

x=28

Answer:

x=28

3

4

y−12+12=12+12

3

4

y=24

Step 2: Multiply both sides by 4/3.

(

4

3

)*(

3

4

y)=(

4

3

)*(24)

y=32

Answer:

x = 28

y = 32

Step-by-step explanation:

Equation 1:

First, we will distribute the 3/4 to everything in the parentheses like this:

[tex]\frac{3x}{4} - \frac{36}{4} = 12[/tex]

We can simplify the 36/4 down like this:

[tex]\frac{3x}{4} - 9 = 12[/tex]

We can add the 9 to the other side:

[tex]\frac{3x}{4} = 21[/tex]

Then multiply the 4 to the other side

[tex]3x = 84[/tex]

Finally, we can divide by 3

[tex]x = 28[/tex]

Equation 2:

We can add 12 to the other side:

[tex]\frac{3y}{4} = 24[/tex]

Then multiply 24 by the 4

[tex]3y = 96[/tex]

Then divide by 3

[tex]y = 32[/tex]

Answer:

Hard to calculate first one is -1/2

Next one is 2.5/1.5 or 2 its hard to tell because of line (not clear)

Next one is -1/2 I think the numbers are small.

You can sign up for Khan academy for clear answers

Answer:

both

Step-by-step explanation:

you can solve this problem with substitution:

5(0) + 12(5) = 60

0 + 60 = 60 is true, therefore the first ordered pair is a solution

the second ordered pair is:

2, 25/6

therefore:

5(2) + 12(25/6) = 60

10 + 50 = 60

10 + 50 = 60 is true, therefore the second ordered pair is also a solution.

in conclusion, both of the ordered pairs are solutions.

Answer:

(7x+7 )(x+1 )

Step-by-step explanation:

7x²+14x+7

(7x+7 )(x+1 )

7x²+7x+7x+7

7x²+14x+7

Answer: 7(1+x)^2

Step-by-step explanation: I got it wrong because of that person at the top your welcome

Answer: 9⁵³ ₓ 9³⁷ = 9⁹⁰

Explanation: 53 + 37 = 90

So our answer: 9⁹⁰

Answer:

its definetely A.

Step-by-step explanation:

i got it right on my assignment

Option B is correct that is a closed circle is at negative 15. Everything to the right of the circle is shaded.

A graph is the representation of the data on the vertical and horizontal coordinates so we can see the trend of the data.

The relation between two expressions that are not equal, employing a sign such as ≠ ‘not equal to’, > ‘greater than, or < ‘less than.

The solution to the inequality –0.5x ≤ 7.5 a closed circle is at negative 15 and everything to the right of the circle is shaded. The graph of the inequality is attached with the answer.

To know more about graphs follow

https://brainly.com/question/25020119

#SPJ2

Answer:

-8

Step-by-step explanation:

f(1) = -2

g(4)= 6

-8 *(-2) -4 * 6 = 16 -24 = -8

Answer:

X=55

Step-by-step explanation:

90 + 35 + X=180

125+X=180

X=55

Answer:

Step-by-step explanation:

Hope it helps you!

Answer:

(1) 1 (2) 0

Step-by-step explanation:

Looking at 1) 2+x²+x;

The coefficient of x is 1 because we see +x in the express which is the same as 1 × x = x.

2) Looking at 2) 2-x²+x³

There is no expression with x but we have x^2 , x^3 . Hence the coefficient of x is 0 because 0×x =0

Answer:

1) 1 and 2) -1

Step-by-step explanation:

1) 2+x²+x

2) 2-x²+x³

Answer:

47

Step-by-step explanation:

Answer:

-54

Step-by-step explanation:

2jk - 10j

Let j = 9 and k=2

2*9*2 - 10 *9

36 - 90

-54

Answer:

The Answer is 15

Step-by-step explanation:

the answer is 15 because that is what i got after i did all the work and i got it correct.

===========================================================

Work Shown:

1/500 = 0.002 is the probability of winning $390

3/500 = 0.006 is the probability of winning $230

16/500 = 0.032 is the probability of winning $170

Multiply the probabilities with their respective winnings

0.002*390 = 0.78

0.006*230 = 1.38

0.032*170 = 5.44

Then add up those results

0.78+1.38+5.44 = 7.60

which is the expected value.

Side note: This game is not a fair game because mathematically a "fair game" is defined as such where the expected value is 0; ie, neither the player nor the dealer win and things break even.

Answer:

£216

Step-by-step explanation:

Total number of people:

Total payment:

Teacher earns in total per given week:

Answer:

The equation is 20 + 15x. Bill took 7 lessons.

Step-by-step explanation:

Let x represent the number of lessons Bill take. Then,

the total cost = materials fee + (each lesson cost).x

Since the materials fee is $20 and each lesson costs $15

The total cost = 20 + 15x

Since Bill's total cost was $125:

→ 125 = 20 + 15x

→ 105 = 15x

→ x = 7

Answer:

x=6

Step-by-step explanation:

You can reach this answer by doing

4+(x-3) = 2x-5

If you do this equation you will get 6 as your answer.

Hope this helps :)

Answer:

∠ABD ≅ ∠CBE

Step-by-step explanation:

took the course

Answer:

Perpendicular

Step-by-step explanation:

D. 2322.50

Step-by-step explanation:

I hope it's right.

Answer:

first one and the second one.

Step-by-step explanation:

nothing ：)

Answer:

this is right

Answer:

Correct option: First one -> real and distinct.

Step-by-step explanation:

To evaluate the roots of the equation 7x^2 + x - 1 = 0, lets find the discriminant Delta using the Bhaskara's formula:

[tex]\Delta = b^{2} - 4ac[/tex]

Where a, b and c are coefficients of the quadratic equation (in this case, a = 7, b = 1 and c = -1)

So we have that:

[tex]\Delta = 1^{2} - 4*7*(-1) = 29[/tex]

To evaluate the roots of the equation, we have the following cases:

[tex]\Delta > 0[/tex] : Two roots real and distinct

[tex]\Delta = 0[/tex] : Two roots real and equal

[tex]\Delta < 0[/tex] : Two roots not real

In our case, we have [tex]\Delta > 0[/tex], so the roots are real and distinct.

Correct option: First one

Answer:

To find this out, you simply multiply 6x5 which is 30

Answer:

Option (D).

Step-by-step explanation:

In the figure attached,

An exponential function has been graphed with certain points marked on it.

To find the average rate of change for this function between the given interval we will use the formula,

Average rate of change = [tex]\frac{f(x_2)-f(x_1)}{y_2-y_1}[/tex]

where [tex]f(x_2)[/tex] = value of the function at x = 4

[tex]f(x_1)[/tex] = value of the function at x = 2

By substituting these values in the formula,

Average rate of change = [tex]\frac{16-4}{4-2}[/tex]

                                        = [tex]\frac{12}{2}[/tex]

                                        = 6

Therefore, Option D will be the answer.