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mrs_skeptik [129]
3 years ago
12

Which property of addition is shown? (3 + 9) + 8 = 3 + (9 + 8)

Mathematics
1 answer:
Illusion [34]3 years ago
6 0

Answer:

Associative Property of Addition

Step-by-step explanation:

Looking at the expression, you can see that the numbers have been grouped differently. Based on the Associative Property of Addition, the sum of the numbers is the same despite the different pairing.

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3. The dance club at school has 22 members. The dance coach wants to send four members to a special training on
diamong [38]

Answer:

a) a combination

b) The probability = 1 ÷ [ Number of ways to select the four dancers ]

Step-by-step explanation:

a) Here it is only required to calculate the number of ways to select the four dancers and the order of the dancers is not required i.e not important for us.

Hence, we will use a combination to select 4 out of 22 dancers

i.e ²²C₄

b) Since the dancers selected are 4 predetermined individuals

therefore,

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Hence,

The probability = 1 ÷ [ Number of ways to select the four dancers ]

= 1 ÷ ²²C₄

8 0
4 years ago
ANSWER QUICKLY PLEWSE FOR BRAINLIEST
photoshop1234 [79]
Angle 3:
62+47=109
All angles in a triangle add to 180 degrees, so 180-109= 71 degrees
Angle 2:
Angles in a straight line always add to 180 degrees too,
so 180-62= 118 degrees
Angle 1:
Again, angles in a triangle add to 180,
so 180-22-118= 40 degrees

Angle 1: 40
Angle 2: 118
Angle 3: 71
Hope that helps :)
6 0
3 years ago
1 +2 +3 + ... + 620=
Lina20 [59]

Answer:626

Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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