Question

how do you do questiosn 1,3 & 5?

1. (2 points) What is the ratio of 175 to 400 in reduced fraction? 1. 2. (2 points) Write 0.5% in reduced fraction and in decimal. 0.5-1. 5.) OOS Fra.ctvonz00 Fiactin Decumal.ocos 200 2. 3. (1 point) Write 1.725 x 104 in standard notation. -4 1.725 X 16 3. 4. (1 point) Write 0.000000000025 in scient ific notation. 15x 10-11 5. (2 points) In a survey of 1250 students in the college,8.5% of them were left- handed. How many of those students were left-handed? Round up your answer 4. to a whole number. 5.

Answer 1

1.) The ratio of the two number is nothing but the division form (fractional form) of both numbers

Therefore, the ratio of 175 to 400 =   

175 400

Now, reducing the above ratio, we get :   

175 35 400 16 80

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3.)     

1.725 10

For changing in standard notation, having power of 10 is negative interger means that the decimal will shift to the left for the number of power of 10.

Therefore,

1 1.725 104 1.725 0.0001725 104

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5.) Here, total number of students surveyed =

1250

of them were left-handed.

8.5 07

So, the number of students were left-handed =

8.5% of 1250

$\implies~\frac{8.5}{100}~*~1250$

$\implies~0.085~*~1250$

$\implies~106.25$

On rounding up our answer to a whole number we get:

The number of students were left-handed = $\boxed{106.25~\approx~106}$ students.

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