609,910 tonnes of plastic was recycled. round this number to 1 significant figure.

609,910 tonnes round to 1 significant figure is 600,000.

Step-by-step explanation:

Given : 609,910 tonnes of plastic was recycled.

To find : Round this number to 1 significant figure ?

Solution :

When rounding significant figures the rules of rounding numbers :

Except that non-significant digits to the left of the decimal are replaced with zeros

Now we round the number 609,910 to 1 significant number.

It means the number after 6 round to zero.

So,

Therefore, 609,910 tonnes round to 1 significant figure is 600,000.

answer

a,b, and d

explanation

a reflection angle is more than

but less than;

an angle that measures

is a reflex angle.(true)

an angle that measures less than

is acute.(true)

provided we are considering angles greater or equal to zero.

an acute angle lies in the range.

an obtuse angle is less than 180° but more than 90°

an angle that measures 300° is obtuse (false)

an angle that measures 65° is an acute angle.(true)