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Nastasia [14]
3 years ago
10

-3 1/5 ÷ 2/15 Please include steps

Mathematics
2 answers:
alex41 [277]3 years ago
8 0
Ok

fisrt we determine sign
negative divided by positive=negative
answer is negative
disregard any signs for now
first convert to from mixed to improper
3 and 1/5=3+1/5=15/5+1/5=16/5

(16/5)/(2/15)
remember the fancy 'invert and multiply'
I won't tell you why because it would take too long, but if you want to know why we invert and multiply, just ask in comments

so, invert an multilply
(a/b)/(c/d)=(ad)/(bc)
(16/5)/(2/15)=(16*15)/(5*2)=(240)/(10)=24

the answer is negative so

-24 is answer
cluponka [151]3 years ago
4 0
-3 1/5 ÷ 2/15
Convert the mixed numbers into improper fractions
- 16/5 divided by 2/15
Convert the division sign into multiplication while flipping the fraction 2/15 to 15/2.
- 16/5 * 15/2
Multiply the numerator by the other numerator while multiplying the denominator by the other denominator.
<span>Final Answer: -240/10 or -24 *All of these answers are equvilant to each other.</span>
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How many times does 5.4 go into 60 if it starts at -18?
photoshop1234 [79]

Answer:

14 \frac{4}{9}

Step-by-step explanation:

starting at -18 you must add 5.4 until you reach 60

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-12.6 + 5.4 = -7.2         twice (2)

-7.2 + 5.4 = -1.8            thrice (3)

-1.8 + 5.4 = 3.6              fourth (4)

3.6 + 5.4 = 9                  fifth (5)

9 + 5.4 = 14.4                 sixth (6)

14.4 + 5.4 = 19.8             seventh (7)

19.8 + 5.4 = 25.2            eighth (8)

25.2 + 5.4 = 30.6            ninth (9)

30.6 + 5.4 = 36                tenth (10)

36 + 5.4 = 41.4                 eleventh (11)

41.4 + 5.4 = 46.8               twelth (12)

46.8 + 5.4 = 52.2               thirteenth (13)

52.2 + 5.4 = 57.6                fourteenth (14)

since 57.6 + 5.4 is over 60, we need to find the difference in how much we need

57.6 - 60 = -2.4

we need 2.4 so subtract by 5.4

5.4 - 2.4 = 3

therefore we should divide

\frac{2.4}{5.4} = 14.444...

which means it goes into 60 (starting at -18) 14.444... repeating times

another way to find the answer is

add 18 + 60

18 + 60 = 78

78/5.4 = 14.444... repeating or 14 \frac{4}{9}

hope this helps:)

6 0
2 years ago
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