Answer:
3 question papers
Step-by-step explanation:
If the teacher takes 15 minutes to mark 1 question paper. Then they will probably take 30 minutes to grade 2 question paper. Because 15 minutes+15 minutes=30 minutes. Then if you and another 15 minutes which will be 40 minutes because 15 minutes+15 minutes+15 minutes=40 minutes.
Hence, the teacher will mark 3 question papers in 40 minutes
Let <em>x</em> be the number equal to 0.124₅, so that
<em>x</em> = 1•5⁻¹ + 2•5⁻² + 4•5⁻³
Multiply <em>x</em> by 5³ to convert it to a whole number:
5³<em>x</em> = 1•5² + 2•5¹ + 4•5⁰
Convert everything to base 2:
5³ = 125 = 64 + 32 + 16 + 8 + 4 + 1 = 1111101₂
1•5² + 2•5¹ + 4•5⁰ = 25 + 10 + 4 = 39 = 32 + 4 + 1 = 100111₂
Then
1111101₂ <em>x</em> = 100111₂
so that
<em>x</em> = 100111₂ / 1111101₂
I've carried out the first several steps in the division in the attached table, with more bits added to the result. The number in base 2 does not terminate. You end up with approximately
0.010011111101111100111...₂
Answer: 
Step-by-step explanation:
By definition, when you multiply two factors the result is known as "Product".
In this case you have to solve the following multiplication:

The first factor is already written in Standard form, but the second one is not written in Standard form.
Then, you need to rewrite it in numbers:

Therefore, the product is:

Answer:
(x,y)=(2,-1)
Step-by-step explanation:




then verify
Answer:
On the image
Step-by-step explanation:
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