18 mile per hour
Step-by-step explanation:
average speed = total distance covered by total time taken
so, avg. speed = ( 2+ 7 ) / ( 20 + 10 )
= 9 / 30
= 3 / 10
= 0.3 miles per minute
= 18 mile per hour
Answer:
<h3>k = -6x+4</h3>
Step-by-step explanation:

Cross Multiply

Isolate k

Divide through by -1

12 because the formula for a circle is pi r^2 (h) and u get the circumference to get the diameter u just do it backwards
Answer:
x = (br + 1)/a
Step-by-step explanation:
Simply divide both sides by <em>a</em> to get our answer.
Answer:
15%
Step-by-step explanation:
You take the number of student in <u>8th grade</u> that are on social media for <u>more</u> than an hour which gives you (12) and divide it by the total number of students (81).
12/81=0.148 repeating
You then round 0.148 repeating to 0.15 and then turn it into a percent by moving the decimal two places to the right.