9 1/6 - 6 2/3 please help its urgent.

Mathematics

2 answers:

bearhunter [10]4 years ago

4 0

Answer:

2 1/2

Step-by-step explanation:

9 1/6 - 6 2/3

Get a common denominator of 6

9 1/6 - 6 2/3 *2/2

9 1/6 - 6 4/6

Borrow 1 from the 9 in the form of 6/6

8 + 6/6+ 1/6 - 6 4/6

8 7/6 - 6 4/6

2 3/6

Simplify the fraction

2 1/2

alina1380 [7]4 years ago

3 0

■ Answer:

2 1/2

■ Step-by-step explanation:

9 1/6 - 6 2/3 =

= 55/6 - 20/3

= 55/6 - 40/6

= 15/6

= 2 3/6

= 2 1/2

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It takes nora two hours to paint a wall 5m by 8m, and zack three hours to paint a wall 4m by 9m. together, how long will it take

Zolol [24]

Nora's speed (5*8)m²/2h= 20 m²/h.
Zack's speed (4*9)m²/3h= 12 m²/h

Together for 1 h they paint (20+12) m²/h=32m²/h

Given area (10*12)m²=120 m²

120m² *1h/32m² = 3.75 h (3h 45 min) to paint 10m*12m together.

3 0

4 years ago

Simplify (-2/5) divided by (8/9) times (2/9) divided by (-1/3) explain and show all steps

spayn [35]

Simplification of (-2/5) divided by (8/9) times (2/9) divided by (-1/3) is 0.3

Solution:

Given that,

Simplify (-2/5) divided by (8/9) times (2/9) divided by (-1/3)

Here "times" represent multiplication

The above sentence can be written mathematically as:

$\frac{-2}{5} \div \frac{8}{9} \times \frac{2}{9} \div \frac{-1}{3}$

Convert the problem to multiplication by changing the division sign to multiplication. When we change division sign to multiplication, the fraction becomes reciprocal

$\rightarrow \frac{-2}{5} \times \frac{9}{8} \times \frac{2}{9} \times \frac{3}{-1}$