Answer:
8 units
Step-by-step explanation:
The circumference of a circle is given by
C = 2*pi*r
50.24 = 2 * 3.14 *r
50.24 = 6.28 r
Divide each side by 6.28
50.24/6.28 = 6.28r/6.28
8 =r
It’s 2 because you plug in “x+1” as y into the the first equation then solve for x.
Answer: 100km/hr
Step-by-step explanation:
From the question, we are told that Zia was driving his truck on the super highway and his speed was recorded by the motorway camera between 6:00am to 8:30am and that he covered a distance of 250km during this time.
Average speed is calculated as distance taken divided by the time used. The time used in this question will be: 8.30am - 6:00am = 2.5 hours.
Speed = Distance/Time
= 250/2.5
= 100km/hour
Answer:
72%
Step-by-step explanation:
A circuit contains two switches.
The first switch transmits messages correctly 80% of the time, then the probability that the message will be transmitted successfully through the first switch is
The second switch transmits messages correctly 90% of the time, then the probability that the message will be transmitted successfully through the second switch is
The probability that the message will be transmitted successfully through both switches is
that is exactly 72%
70 or 120 because either you multiple or addition
