A truck is rented at $40 per day plus a charge per mile of use. The truck traveled 15 miles in one day, and the total charge was $115. Which equation can be used to find the charge x, in dollars, per mile traveled?

Answers

Answer 1

Answer: 15x+40=115
15x+40-40=115-40
15x=75
15/15 x=75/15
x= 5

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Simplify 5 + 2{x - 4[3x + 7(2 - x)]}.
-34x - 107
34x - 107
34x + 107

Answers

$5 + 2(x - 4[3x + 7(2-x)]) \n \n 5 + 2(x - 4(3x + 14-7x)) \n \n 5 + 2(x - 4((3x - 7x) + 14)) \n \n 5 + 2(x - 4(-4x + 14)) \n \n 5 + 2(x + 16x - 56) \n \n 5 + 2(17x - 56) \n \n 5 + 34x = 112 \n \n 34x - 107 \n \n Answer: \fbox {34x - 107}$

Answer:

b) 34x - 107

Step-by-step explanation:

How do you solve 8a+a-3=6a-2a-3 step by step

Answers

8a + a - 3 = 6a - 2a - 3

1. Add the a's on both sides:

9a - 3 = 4a - 3

2. Shift 4a to the left and -3 to the right of the equals sign (this changes their signs):

9a - 4a = -3 + 3

3. Simplify:

5a = 0

So a = 0

Applying simple mathematical operations, after isolating 'a' we get the solution o =f the given expression is a = 0.

Using operations like addition, subtraction, multiplication, and division, a mathematical expression is defined as a group of numerical variables and functions.

The given expression is

8a+a-3=6a-2a-3

To solve this equation:

Simplify the like terms,

9a-3 = 4a-3

Add 3 on both sides,

9a = 4a

Isolate a by subtracting 4a on both sides,

5a = 0

Dividing both sides by 5 we get,

a = 0.

Hence,

The solution of the given expression a = 0.

To learn more about the mathematical expression visit:

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Please help I don't know what it is

Answers

Answer:

2. is the correct one

Step-by-step explanation:

4x-3x^3+2

Answer:

-x^3-4x-2

step by step

An equation is shown below:
-2c = pm2 - n

Which equation is solved for m?

Answers

If you would like to solve the equation -2c = pm^2 - n for m, you can do this using the following steps:

-2c = pm^2 - n
-2c + n = pm^2 /p
m^2 = (-2c + n) / p
m = sqrt((-2c + n) / p)

The correct result would be the second answer; m = sqrt((-2c + n) / p).

What is the value of x, when 10(x + 2) = 5(x + 8)?

Answers

Hey there, I think this might help you.

Which of the following values "completes the square," or creates a perfect square trinomial, for x2 − 8x + ___?8
16
–8
–16

Answers

$Perfect\ square:\ (x\pm y)^2=x^2\pm2xy+y^2\ntherefore\nx^2-OK\n-8x=-2\cdot x\cdot 4\n4^2=16\n\nconclusion\n\nx^2-8x+\boxed{?}=x^2-2\cdot x\cdot4+\boxed{4^2}=x^2-8x+16\n\nYour\ answer:\boxed{\boxed{16}}$

Answer: 16

Step-by-step explanation: A more simple approach is realizing that the blocks show 8 x tiles and 1 x^2 tile. The 8 x tiles are on either side of the x^2 tile which is 4 x tiles on each side. So as we can see we can multiply each side together. 4x4 = 16. So that is how you get 16 without having to work it out.

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