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3 years ago

Which of the following shows an example of the commutative property of multiplication

Mathematics

1 answer:

Mars2501 [29]3 years ago

7 0

<h3>Answer: Choice C</h3>

2 x 3 = 3 x 2

Explanation:

The commutative property of multiplication says we can multiply any two numbers in any order we want. The general rule is a x b = b x a, where x represents the multiplication symbol. The 'a' and 'b' can be any two numbers you want.

Choice C shows an example of this. Either side simplifies to 6.

Another example would be 4 x 5 = 5 x 4 where both sides become 20.

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The sales tax in your city is %8.8, point, percent, and an item costs \$63$ before tax.

Flura [38]

Answer:

$68.54

Step-by-step explanation:

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3 years ago

3. Spiral Review: Solve the equation algebraically. Show all work. Circle your final solution.

AlexFokin [52]

Answer:

z=-13/7

Step-by-step explanation:

1. Add 3z(7z+5=-8)

2. Subtract 5(7z=-13)

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3 years ago

mr.roxbury weighed 240 pounds when he started on a diet. over a one year period mr.roxbury lost 32% of his body weight. in the f

Annette [7]

Answer:

187.68

Step-by-step explanation:

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2 years ago

Need 2 more. 50 points!<br><br> Please show work, Thanks! :)

rjkz [21]

Answer:

1) C

2) C

Step-by-step explanation:

Question 1)

We want a parabola that has the vertex (-8, -7) and also passes through the point (-7, -4).

So, we can use the vertex form. Remember that the vertex form is:

$y=a(x-h)^2+k$

Where a is our leading co-efficient and (h, k) is our vertex.

We know that our vertex is (-8, -7). So, substitute this into the equation:

$y=a(x-(-8))^2+(-7)$

Simplify:

$y=a(x+8)^2-7$

Now, we need to determine the value of our a. To do so, we can use the point the problem had given us. We know that the graph passes through (-7, -4).

So, when x is -7, y is -4. Substitute -7 for x and -4 for y:

$(-4)=a((-7)+8)^2-7$

Solve for a. Add within the parentheses:

$-4=a(1)^2-7$

Square:

$-4=a-7$

Add 7 to both sides. Therefore, the value of a is:

$a=3$

So, our entire equation in vertex form is:

$y=3(x+8)^2-7$

Our answer is C.

Question 2)

We are given a graph and are asked to find the equation of the graph.

Again, let's use the vertex form. From the graph, we can see that the vertex is at (-2, 2). Let's substitute this into our vertex equation:

$y=a(x-(-2))^2+2$

Simplify:

$y=a(x+2)^2+2$

Again, we need to find the value of a.

Notice that the graph crosses the point (-1, 5).

So, let's substitute -1 for x and 5 for y. This yields:

$5=a((-1)+2)^2+2$

Solve for a. Add within the parentheses.

$5=a(1)^2+2$

Square:

$5=a+2$

Subtract 2 from both sides. So, the value of a is:

$a=3$

Therefore, our entire equation is:

$y=3(x+2)^2-2$

Our answer is C.

And we're done!

3 0

3 years ago

What is the converse of the statement? If you are in Florida, then you are in Miami. If you are in Florida, then you are a Flori

slava [35]

Your answer would be "If you are in Miami, then you are in Florida."

If this answer is incorrect, then I am sorry.

(Also this question belongs in the Ela section, not the mathematics)

7 0

3 years ago

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