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Natasha2012 [34]
4 years ago
10

-4/9n ÷ 1/15n please help w/explanation and step by step​

Mathematics
1 answer:
Sindrei [870]4 years ago
6 0

Answer:

-20n/3n

Step-by-step explanation:

-4       1

---   /    ---

9n       15n

Keep, change, flip

- Keep the -4/9n

- Change the division sign to a multiplication sign

- Flip the 1/15n to 15n/1

-4       15n

---   *    ---

9n       1

Cross simplify.

9n divided by 3 is 3n.

15n divided by 3 is 5n.

-4       5n

---   *    ---

3n       1

-4 times 5n equals -20n

3n times 1 equals 3n

-20n      

---  

3n

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Using the net below, find the surface area
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Answer:

Surface area = 90 cm²

Step-by-step explanation:

Given net of the rectangular prism shows the dimensions as,

Length = 5 cm

Width = 5 cm

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8 0
3 years ago
Which choice is equivalent to the quotient below when -2<=x<2
Arlecino [84]

The choice which is equivalent to; √(4-x²)/√(2-x) is; √(2-x).

<h3>Which choice is equivalent to the quotient?</h3>

According to the task content, it follows that the expression whose equivalent is to be determined can be evaluated as follows;

√(4-x²)/√(2-x) = √(4-x²)/(2-x)

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4 0
2 years ago
How do I solve this question?​
g100num [7]

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Step-by-step explanation:

\frac{6 {x}^{ - 1}  {y}^{ \frac{7}{2} } }{ \sqrt{16 {x}^{2} }  {y}^{2} } \\  \\  =   \frac{6 {x}^{ - 1}  {y}^{ \frac{7}{2} } }{ \sqrt{(4 {x} {y})^{2} }}\\  \\  =  \frac{6 {x}^{ - 1}  {y}^{ \frac{7}{2} } }{ {4 {x} {y}}}\\  \\  =   \frac{6}{4}  {x }^{ - 1 - 1}  {y}^{ \frac{7}{2} - 1 }  \\  \\   =   \frac{3}{2}  {x }^{ - 2}  {y}^{ \frac{5}{2} }  \\  \\ equating \: it \: with \:  \\ a {x}^{b}  {y}^{c}  \\  \\  \implies \\ a =  \frac{3}{2}  \\  \\ b =  - 2 \\  \\ c =  \frac{5}{2}  \\  \\ abc =  \frac{3}{2}  \times ( - 2) \times  \frac{5}{2}  \\  \\  =  -  \frac{15}{2}   \\  \\  =- 7 \frac{1}{2}  \\

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