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4 years ago

Several properties are used to evaluate this expression. Identify the property used in each step.

Mathematics

2 answers:

madam [21]4 years ago

6 0

Given expression: 21 + (36 + 0 + 19)

Using identity property of addition: a + 0 = a

21 + (36 + 0 + 19) = 21 + (36 + 19)

Using commutative property of addition: a + b = b + a

21 + (36 + 19) = 21 + (19 + 36)

Using associative property of addition: a + (b + c) = (a + b) + c

21 + (19 + 36) = (21 + 19) + 36

Now, add two numbers inside the bracket.

(21 + 19) + 36 = 40 + 36

Using closure property of addition: a + b = c any number.

40 + 36 = 76

Hence 21 + (36 + 0 + 19) = 76.

oksano4ka [1.4K]4 years ago

5 0

Answer:

step one is the identitey property step 2 is the communative property step 3 is the associative property

Step-by-step explanation:

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konstantin123 [22]

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$\rm Numbers = 4 \ and \ -3.$

Step-by-step explanation:

Given :-

The sum of two numbers is 1 .
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3 years ago

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OleMash [197]

Hello!

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The formula for the surface area of a cylinder is SA = 2πrh + 2πr².

In this formula, r is the radius and h is the height.

In the given diagram, we see that the height is 6 meters, and the radius 9 meters. With those values, we can substitute them into our formula and solve for the surface area.

In some cases, you are given the diameter. To find the radius, you would need to divide the diameter by two.

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Zolol [24]

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