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ad-work [718]
2 years ago
7

Choose the number sentence that applies the commutative property to the example.

Mathematics
1 answer:
Vinil7 [7]2 years ago
8 0

The number sentence that applies the commutative property to the example is 4 × 3 = 12

<h3>Commutative property</h3>

Commutative property can be additive or multiplicative. It is a way of changing the position of a function or value in an expression without affecting the result

Examples are

A +B = B +A

AB = BA

Although the value were interchanged, the result were not affected. Hence the number sentence that applies the commutative property to the example is 4 × 3 = 12 since changing 3 and 4 does not affect the result

Learn more on commutative property here: brainly.com/question/778086

#SPJ1

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Answer:

<u>10 ft.</u>

Step-by-step explanation:

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Answer:

17 ± sqrt(337)

 -----------------------

     2

Step-by-step explanation:

Let a = shorter leg

b= longer leg = a+7

c = hypotenuse = 2a-5

We can use the Pythagorean theorem

a^2+b^2 = c^2

a^2 + (a+7)^2 = (2a-5)^2

(a+7)^2 = a^2 +7a +7a+49 = a^2 +14a +49

(2a-5)^2 = 2a*2a -10a -10a +25 = 4a^2 -20a +25

Substituting these into the equation

a^2 + (a^2 +14a +49) = (4a^2 -20a +25)

Combine like terms

2a^2 +14a +49 = 4a^2 -20a +25

Subtracting 2a^2 from each side

2a^2 -2a^2 +14a +49 = 4a^2-2a^2 -20a +25

+14a +49 = 2a^2 -20a +25

Subtract 14a from each side

-14a+14a +49 = 2a^2 -20a -14a+25

+49 = 2a^2 -34a +25

Subtract 49 from each side

49-49 = 2a^2 -34a +25-49

0 =  2a^2 -34a -24

Divide each side by 2

0/2 =  2/2a^2 -34/2a -24/2

0 = a^2 -17a -12

Using the quadratic formula

a=1  b= -17  c = -12

17 ±sqrt( (-17)^2 - 4(1)(-12))

----------------------------------

2(1)

 17 ± sqrt(337)

 -----------------------

     2

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marusya05 [52]

Answer:

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Step-by-step explanation:

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