C) 2/3 of a page per hour
Since he can write 1/3 of a page in 1/2 of an hour, multiply by 2 to find that he writes 2/3 of a page in 1 hour.
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Answer:
- More than half the scores were 85% or greater.
- At least one score was exactly 85%
Step-by-step explanation:
These two answers come from the fact we have a median calculated.
The median of a sample of an odd number of values (like 5 in this case) is one of the values. So, 85% is a result of one of the tests Rylee took.
Since 85% is the median, it means it has 2 values above and 2 value below... counting the 85% itself, that makes 3 results with 85% or greater. Since there is only 5 test results in the sample, 3/5 are 85% or greater... so more than half.
with speed of 18 feet per second the distance between the twins change.
<u>Step-by-step explanation:</u>
Here we have , Two twins are running away from their mother in opposite directions one with the speed of 10 feet per second and the other with the speed of 8 feet per second. We need to find How and with what speed does the distance between the twins change. Let's find out:
Two twins are running in opposite directions , Let us suppose one twin speed is denoted by
, i.e. 10 feet per second
⇒ ![v_1=10](https://tex.z-dn.net/?f=v_1%3D10)
Now , Speed of other twin is
, i.e. -8 feet per second . Minus sign shows the direction as this twin is moving in opposite direction :
⇒ ![v_2=-8](https://tex.z-dn.net/?f=v_2%3D-8)
Now, Difference in both speeds will give the change in speed between them :
⇒ ![v_1-v_2=10-(-8)](https://tex.z-dn.net/?f=v_1-v_2%3D10-%28-8%29)
⇒ ![v_1-v_2=18](https://tex.z-dn.net/?f=v_1-v_2%3D18)
Therefore , with speed of 18 feet per second the distance between the twins change.
390% that's the percentage enjoy