All categories

3 years ago

al calls every 3 days, lee every 4 days, and pat every 6 day. Once every ? days, all three will call on the same day

Mathematics

1 answer:

gregori [183]3 years ago

8 0

Answer:

Step-by-step explanation:

Find the LCM (Least Common Multiple) of the three numbers.

We could multiply 3 x 4 x 6 to get 72, but there is a smaller multiple, 12.

6 x 2 = 12

4 x 3 = 12

3 x 4 = 12

Hope this helps!

You might be interested in

I need 4 numbers that equal 50 added together<br> no links

Svet_ta [14]

Answer:

1 + 49

2 + 48

3 + 47

4 + 46

5 + 45

6 + 44

7 + 43

8 + 42

9 + 41

10 + 40

11 + 39

12 + 38

13 + 37

14 + 36

15 + 35

16 + 34

17 + 33

18 + 32

19 + 31

20 + 30

21 + 29

22 + 28

23 + 27

24 + 26

25 + 25

26 + 24

27 + 23

28 + 22

29 + 21

30 + 20

31 + 19

32 + 18

33 + 17

34 + 16

35 + 15

36 + 14

37 + 13

38 + 12

39 + 11

40 + 10

41 + 9

42 + 8

43 + 7

44 + 6

45 + 5

46 + 4

47 + 3

48 + 2

49 + 1

50 + 0

8 0

3 years ago

How do you do...<br> cos2x-sin2x=1-2sin2x

Bess [88]

$sin (2 \alpha) =2\cdot sin \alpha \cdot cos \alpha \\cos(2 \alpha )=1-2sin^2 \alpha \\-------------------- \\cos2x-sin2x=1-2sin2x\\cos2x+sin2x=1\\1-2sin^2x+2sinx\cdot cosx=1\\-2sinx(sin x-cosx)=0\\ -2sinx=0\ \ \ \ or\ \ \ \ sinx-cosx=0\\\\1)\ -2sinx=0\ \ \Leftrightarrow\ \ sinx=0\ \ \Leftrightarrow\ \ x_1=k \pi \ \ and\ \ k\in I\\2)\ \ sinx-cosx=0\ \ \Leftrightarrow\ \ sinx=cosx\ /:cosx\ \ \ \ \ \wedge\ \ \ \ cos x \neq 0\\tanx=1\ \ \Leftrightarrow\ \ x_2= \frac{ \pi }{4} +k \pi \ \ and\ \ k\in I$

3 0

4 years ago

An initial population if 1000 starfish double each year for 4 years. What is the population after 4 years?

Zolol [24]

Answer:

16,000 starfish

Step-by-step explanation:

year 0: 1000

year 1: 2000

year 2: 4000

year 3: 8000

year 4: 16000

8 0

3 years ago

When 15 minus 3 is multiplied by a number the product is 2.

AlexFokin [52]

The number is 1/6. 15 minus 3 = 12. 12 times 1/6 is 2

4 0

3 years ago

Someone helped me please

suter [353]

Answer:

Step-by-step explanation:

add all student to get total.

30+28+14+28=100 total students

28+14+28=70 students that do not supprt ashley.

70/100 is the probability the student chosen at random will not support ashley.

.7 in simplified decimal format.

4 0

3 years ago