Answer:
-7+4=-3
Step-by-step explanation:
Think of it as adding head to cold (cold being negative numbers). You are adding four "heats" to seven which makes it hotter. The hotter something gets the closer to positive numbers it is. . . so when adding four things if heat to 7 it gets hotter by four therefore it's now at -3.
sorry if that didn't make sense
Answer:
r=7/5
Step-by-step explanation:
Answer:
The second:
Step-by-step explanation:
Answer:
Option B
Step-by-step explanation:
Given that the regression equation using least squares for test scores and student teacher ratio is
Test Score = 557.8 + 36.42 In (Income).
Say if 1% income is increased.
Let income be 100
New income = 101
Then we have
Test score original =
Test score new income
=
Increase = 0.362~0.36
Option B is right.
Answer:
8 hours and 30 minutes
Step-by-step explanation:
If you divide the hours by the number of days you will get your answer for the average amount of time spent each day. So, 153 hours divided by 18 days is 8.5. 8.5 can also be converted into 8 hours and 30 minutes and .5 is half of a number and 30 minutes is half of an hour. Therefore, your final answer is 8 hours and 30 minutes. Hope this helps! :)