Having a look at a protractor, it shows 90. That is 1/2 pi RAD.
Answer:
300 phones the company activated in one minute
As per unitary method, calculation been done to find the value of single unit from the value of multiple units.
So, she is dividing the total number of phone activated by number of minutes taken to activate to find phone activate in one minute.
Step-by-step explanation:
Here is the correct question: Meg wants to find how many phones the company activated in one minute. Explain why meg can use 15000 divided by 50 to find the answer.
As per unitary method, calculation been done to find the value of single unit from the value of multiple units.
Therefore, in the above question Meg knew the number of total phone activated by company in 50 minutes, which is 15000.
Now, she want to find how many phones the company activates in one minute.
So, she is dividing the total number of phone activated by number of minutes taken to activate to find phone activate in one minute.
Phones the company activated in one minute=
∴ 300 phones the company activated in one minute.
Answer:
The ball would take t = 6 seconds to hit the ground. So, option (D) is correct.
Step-by-step explanation:
As the equation for the balls height s at time t seconds after the
ball is thrown;
s(t) = –4.9t² + 14.7t + 88.2
When a ball hits the ground, the height (s) would be zero.
So,
0 = –4.9t² + 14.7t + 88.2
4.9t² − 14.7t − 88.2 = 0
Use quadratic formula with a = 4.9, b = -14.7, c = -88.2.
t = −b ±√b²−4ac ÷ 2a
t = −(−14.7) ±√(−14.7)²−4(4.9)(−88.2) ÷ 2(4.9)
t = 14.7±√1944.81 ÷ 9.8
t = 6, −3 (ignore the negative value)
t = 6 seconds
Hence, the ball would take t = 6 seconds to hit the ground. So, option (D) is correct.
Keywords: time, second, height s at time t
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Your answer should be 71. :)
Answer:
33°C
Step-by-step explanation:
The time between 8:20 and 7:50 is 30 minutes. If it drops 1°C per minute you multiply this number by the amount of minutes which would be 30. This becomes 30°C. Then add the 3° it's at now to become 33°C.