In a batch of 890 calculators, 12 were found to be defective. what is the probability that a calculator chosen at random will be defective? write the probability as a percent. round to the nearest tenth of a percent if necessary.

a.74%

b.1.3%

c.98.7%

d.1.8%

1.3%

Step-by-step explanation:

Given: The number of calculators T= 890

The number of defective calculators D= 12

Now, the probability that a calculator chosen at random will be defective is given by :-

P(defective )

⇒P(defective )

In percent, P(defective )

Hence, the probability that a calculator chosen at random will be defective = 1.3%

30 miles

step-by-step explanation:

we know that 60 seconds equals 1 minute and 60 minutes 1 hour

44 ft       60 sec     60 min     158400   ft

  *   *   =

1 sec       1 min       1 hour         hour

we know that there are 5280 ft per mile

158400   ft       1 mile         30 miles

  *   =

1   hour               5280 ft     1 hour

so in 1 hour   it can travel 30 miles