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Effectus [21]
3 years ago
14

3(4*5)=(3*4)5 what is thsi

Mathematics
2 answers:
Serggg [28]3 years ago
8 0
This is the associative property. Basically if you move the parenthesis either to left or right you’ll still get the right answer. So 4 times 5 equals 20 and 20 times 3 equals 60. 3 x 4 equals 12 and 12 x 5 equals 60
Burka [1]3 years ago
7 0

Answer:


Step-by-step explanation:

<h3>Let's first understand this problem. What does 3(4 * 5) and </h3><h3>(3 * 4)5 mean?</h3>

Let's first simplify 3(4 * 5). The first part we need to understand PEMDAS, the order of operations. PEMDAS is the order in which we <em>operate</em>. For example, you multiply before you subtract or add, right? What is PEMDAS?

<h2>P is for Parenthesis. Parenthesis look like ( ).</h2><h2>E is for Exponents. Exponents look like the 2 in this expression: x². Exponents tell you how many times you multiply that number by itself. </h2>

x² = x * x, x³ = x * x * x, etc.

<h2>M is for Multiplication. Multiplication signs can look like either *, ×, or ·</h2><h2>D is for Division. Division signs can look like either / or ÷.</h2><h2>A is for Addition. Addition signs can look like +.</h2><h2>S is for subtraction. Subtraction signs can look like -. </h2><h3>Please notice that Multiplication and Division can be before or after each other; same with Addition or Subtraction. With addition and subtraction, you want to go from left to right.</h3><h2>Now, according to PEMDAS, we must solve what is within the parenthesis to first simplify each side of the equation. Let's try!</h2><h2>3(4 * 5) = (3 * 4)5</h2><h3>We need to simplify the parenthesis. That means we need to simplify (4 * 5) and (3 * 4). Let's try!</h3><h3>4 * 5 = 4 × 5 = 20.</h3><h3>3 * 4 = 3 × 4 = 12.</h3><h3>Now we can replace (4 * 5) with 20 on the left side of the equation and (3 * 4) with 12 on the right side of the equation...</h3><h3>3 × 20 = 12 × 5</h3><h3>60 = 60</h3><h2>If both sides of the equation are the same, the solution would have to be all real numbers. Also, there is no variable to define. It's basically rewriting 60 with factoring using the associative property of multiplication.</h2>
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A flower garden is shaped like a circle. Its diameter is 40yd. A ring-shaped path goes around the garden. The width of the path
stellarik [79]

Answer:

Number of sand bags needed = 124

Step-by-step explanation:

Diameter of garden = 40 yd

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Diameter of garden with path = 40 + 2 x 6 = 52 yd

We need to find area of path.

Area of path = Area of garden with path - area of garden

\texttt{Area of path = }\frac{\pi \times 52^2}{4}-\frac{\pi \times 40^2}{4}\\\\\texttt{Area of path = }867.08yd^2

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3 years ago
Stephanie spent $16 on product and supplies for a lemonade stand. She charged $2 for a cup of lemonade. The graph below can be u
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Answer:

A. The y-intercept represents the amount of money Stephanie has. She started at -16 because she spent $16.

B. The x-intercept is the amount of cups of lemonade she sold. On the graph, it shows that after 8 cups, she made 16 dollars back. She didn't make any profit sense she started at -16.

C. The slope represents how much she made after so many cups of lemonade were sold. It was after 8 cups of lemonade were sold that she started making a profit.

Step-by-step explanation:

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