3 years ago

Help please !!!!!!!!!!

Mathematics

1 answer:

kompoz [17]3 years ago

3 0

I think you posted several of times I put my response in another post

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At a hardware store, each wooden plank costs $3.57. How much do 12 planks cost?

777dan777 [17]

To find this answer, we need to multiply 3.57 by 12.
$3.57 * 12 = 42.84$
Therefore, 12 planks will cost $42.84.

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4 years ago

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What is the greatest common factor of 31 43 and 95?

kramer

It’s 1. Apparently my answer is not long enough so I’m making it longer :(:

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4 years ago

Determine the rate of change between the points (-1,-1) and (1,-1).

AVprozaik [17]

Answer:

$\displaystyle m = 0$

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Algebra I

Coordinate Planes

Coordinates (x, y)
Slope Formula: $\displaystyle m = \frac{y_2 - y_1}{x_2 - x_1}$

Step-by-step explanation:

*Note:

Rate of change is slope.

Step 1: Define

Identify.

Point (-1, -1)

Point (1, -1)

Step 2: Find slope m

Simply plug in the 2 coordinates into the slope formula to find slope m.

Substitute in points [Slope Formula]: $\displaystyle m = \frac{-1 + 1}{1 + 1}$
[Order of Operations] Simplify: $\displaystyle m = \frac{0}{2}$
Simplify: $\displaystyle m = 0$

4 0

3 years ago

a moving company charges $800 plus $16 per hour. Another moving company charges $720 plus $21 per hour. for a job of how many ho

nirvana33 [79]

800+16x=720+21x
80+16x=21x
80=5x
X=16
So 16 hours :)

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4 years ago

I need help on all of these please help i’ll mark brainliest!!! -11 + x = 7X - 5

nalin [4]

I don't know what your looking for, so be more specific, but I'm assuming your solving for x, so that's would be

x = -1

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3 years ago

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