3 years ago

How many different ways can a race with 4 runners be completed? (Assume there is no tie.)

Mathematics

1 answer:

sergeinik [125]3 years ago

7 0

Answer:

Step-by-step explanation:

1234, 1243, 1324, 1342, 1432, 1423, 2134, 2143, 2314, 2341, 2413, 2431, 3214, 3241, 3124, 3142, 3412, 3421, 4321, 4312, 4231, 4213, 4132, 4123

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P and q are two arithmetic sequences. The first four terms of sequence P are 2,6,10,14. The nth term of sequence Q is 145-3n. Th

Tomtit [17]

Answer:

r = 21

Step-by-step explanation:

nth of sequence P :

$T_{n} = 4n -2$

$r^{th} term$ : $4r-2=145-3r\\4r+3r=145+2\\7r=147\\r=21$

5 0

2 years ago

Three tenths of the sum of -2 and -28 written as numerical expression

Anuta_ua [19.1K]

Three tenths is the same as 3/10

the sum of -2 and -28 is -30

3/10 of -30 is the same as the products of the two

3 x -30 / 10 = -90/10 = -9

Your answer is

3(-2 + -28)/10 = -9

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4 years ago

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Over [174]

Answer:

Neither do I ...

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3 years ago

There are 62 girls in the 7th grade and 58 boys in the 8th grade. Each grade has 120 students. Which statement correctly compare

oee [108]

7th grade: 62/120 of the class is made up of girls; (120-62)/120 of boys.
8th grade: 58/120 of the class is made up of boys; (120-58)/120 of girls.

Looking at the info for boys only: Compare (120-62)/120 with 58/120. What do you see?

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3 years ago

Daija wants trim 3.5centimetes from her hair how should she move the decimal point to convert this number to millimeters

cestrela7 [59]

9514 1404 393

Answer:

right

Step-by-step explanation:

1.0 cm = 10. mm . . . . . . the decimal point is moved to the right

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3 years ago