Answer: 65 people completed graduate school.
Step-by-step explanation:
25% of 260 is 65.
The answer is obviously three.
We will be using the formulas:
speed=distance/time
time=distance/speed
distance=speed×time
First let's find out Diane's rate of swimming. We can measure this by finding the slope (y/x) of a given coordinate on the graph. One point is (10,15), so you do 15/10=1.5m/s
Now for Rick's rate of swimming, just take a pair of values from the table. 12.5/10=1.25m/s
By the way m/s is metres per second for this
So at a constant speed of 1.5m/s, Diane swam 150m in 150/1.5= 100 seconds, or 1 minute 40 seconds
And at a constant speed of 1.25m/s, Rick swam 150m in 150/1.25= 120 seconds, or 2 minutes.
So the difference between their two times is 20 seconds
Answer: 3a-21
Step-by-step explanation:
Apply distributive property
a=3-3*7
Multiply 3*7=21
Answer: 3a--21
Step-by-step explanation:
~While adding , the sign of each term of second expression remains same. So, Remove the unnecessary parentheses :
⤑ 
~Like terms are those which have the same base. Combine the like terms :
⤑ 
⤑ 
Hope I helped ! ツ
Have a wonderful day / night ♡
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