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Musya8 [376]
2 years ago
14

4. Which property of operations is used to write 15x + 9 as 9 + 15x?

Mathematics
1 answer:
suter [353]2 years ago
8 0

Solution: The commutative property of addition states that when two numbers are being added, their order can be changed without affecting the sum.

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In how many ways can you seat 5 women and 5 men in a row if women must seat next to each other,men must seat next to each other,
makvit [3.9K]

Answer: 288ways

Step-by-step explanation:

There are 5men and 5women to be arranged, since the men must seat together, they will be arranged in 5! ways. For the women, since they must also seat together but with siamese twins between them, they can be arranged in 4! ways instead of 5! ways and this is due to presence of the twins among them.

Note that Siamese twins cannot be separated as such both are taken as one making it 4!.

Since the women and men are always sitting together, they can be arranged in 2! ways i.e 2 sexes

The final seating arrangement can be done in 2!×(5!+4!) ways

= 2× (120+24)

= 2×144

= 288ways.

Note that the arrangement of the men and women are added because they can only be arranged differently to ensure different sex are not sitting together.

8 0
2 years ago
Collins Middle School has 217 sixth grade students. If the sixth grade is 35% of the total school, how many students are in the
lbvjy [14]

Answer:620

Step-by-step explanation: lets say the total of school is X so:

X.35÷100=217

when we calculate this the answer will be  620

4 0
3 years ago
Read 2 more answers
A restaurant has 9 pounds of onion. The restaurant's manager ordered 4 more pounds of onion. The onions then were mixed and kept
Iteru [2.4K]

Answer:

6.5

Step-by-step explanation:

9 + 4 = 13 divide by 2 = 6.5 is your answer.

4 0
3 years ago
If you read 4/9 of a page in 3/5 minutes what’s your unit rate page per minute
Vikentia [17]

Answer:

12/45

Step-by-step explanation:

The unit rate is 12/45, because 4 times 3 is 12, and 9 times 5 is 45.

5 0
2 years ago
Which of the following are line segments shown in the drawing?​
vesna_86 [32]

Answer:

BE

Step-by-step explanation:

This is because it is the part of a line that has two endpoints and is finite in length.

6 0
1 year ago
Read 2 more answers
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