MATHEMATICS MIDDLE SCHOOL

How many different three-person relay teams can be chosen from six students?

Answers

Answer 1
Answer: The first person can be any one of 6.
                 For each of those . . .
The second person can be any one of the remaining 5.
                 For each of those . . .
The third person can be any one of the remaining 4.

 Total number of ways to pick 3 people out of 6 = (6 x 5 x 4) = 120 ways.

BUT . . .

For each 3-person team, there are (3 x 2 x 1) = 6 ways to pick
the same three people.

In the 120 ways to pick 3 people, you'll find each different
group of 3 people picked 6 times, in a different order.

The number of different 3-person teams is

                         120 / 6  =  20 teams .

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Find the missing numbers:

26 - 4 = 12 + x

Answers

26 - 4 = 12 + x
22 - 12 =x
x=10
26-4=12+10
do you need any help in anything else.
22-x
x=10

The LCD of 2, 3, and 4 is

Answers

Answer:

Step-by-step explanation:

Answer:

1

Step-by-step explanation:

Navor has $800 and is spending $30 per week. Rashid has $150 and is saving $20 per week. In how many weeks will Nabor and Rashid have the same amount of money?

Answers

They will have the same amount of money at week 13 with $410 for each of them
-------------------------------------
Define x :
-------------------------------------
Let x be the number of weeks needed.

-------------------------------------
Navor :
-------------------------------------
Navor has $800 and is spending $30 per week:
800 - 30x

-------------------------------------
Rashid :
-------------------------------------
Rashid has $150 and is saving $20 per week:
150 + 20x

-------------------------------------
Solve x:
-------------------------------------
800 - 30x = 150 + 20x
50x = 800 - 150
50x = 650
x = 13

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Answer: They will have the same amount of money after 13 weeks.
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Compare 25\28 to 5\6

Answers



25\28=0.89286 

5\6=0.833333

Jake spends 2 hours on each homework assignment and he had 3 assignments each day. Orlando spends 2 hours on each homework assignment and he had 2 homework assignments each day. How much time will Jake and Orlando spend doing homework after 30 days?

Answers

Jake: one hundred and eighty hours
Orlando: one hundred and twenty hours

total: three hundred hours
Jake will spend 180 hours on homework assignments after 30 days and Orlando will spend 120 hours on homework assignments after 30 days hope this helps :)  (Jake:2 hours X 30 days = 180hrs) (Orlando:4 hours X 30 days= 120hrs)

Why is a square also a rhombus?

Answers

Answer:

A square is a quadrilateral with all sides equal in length and all interior angles right angles. Thus a rhombus is not a square unless the angles are all right angles. A square however is a rhombus since all four of its sides are of the same length.

Step-by-step explanation:

Hope thats helpful! :)

you can find the answer to this by looking at the properties of both shapes. a rhombus has Opposite sides that are parallel, Adjacent angles are supplementary, All the four sides are equal, and all 4 sides bisect forming right angles. a square also has these properties therefore a square can classify as a rhombus. but be careful, just because a square is a rhombus, it doesn't always necessary mean that a rhombus is always a square
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