Answer:
x = 60°
Step-by-step explanation:
Answer:
10 hours
Step-by-step explanation:
Let represent the distance the train heading north has traveled
Let represent the distance the train heading south has traveled
Let represent the number of hours that has passed
Answer:8:<. 9:=. 10:<. 11:>. 12:>
Step-by-step explanation:
Simply do the expression and find the answer to the first one then get the answer to the second one and find which ones greater or equal!
Answer:
S= 5, L= 12
Step-by-step explanation:
To find the value of L and S, we need to first label the 2 equations.
L +S= 17 -----(1)
3L +2S= 46 -----(2)
From (1):
L= 17 -S -----(3) <em>(</em><em>-S</em><em> </em><em>on</em><em> </em><em>both</em><em> </em><em>sides</em><em>)</em>
Subst. (3) into (2):
3(17-S) +2S= 46
3(17) -3S +2S= 46 <em> </em><em>(</em><em>expand</em><em>)</em>
51 -S= 46
-S= 46 -51 <em>(</em><em>-51</em><em> </em><em>on</em><em> </em><em>both</em><em> </em><em>sides</em><em>)</em>
-S= -5
S= 5 <em>(</em><em>divide</em><em> </em><em>by</em><em> </em><em>-1</em><em> </em><em>throughout</em><em>)</em>
Subst. S=5 into (3):
L= 17 -5
L= 12
Answer:
a) It is a one-tailed test
Step-by-step explanation:
The number of plants he sets up in the room, n = 20
The number of plants that grew more with Miracle Grow = 14
The alpha level α = 0.01
A one-tailed test is used when the critical-area of interest in the distribution is either to the left or right of a value on the number line. That is the test is concerned if the test result is either less than or more than a value
In the test the farmer subjects all 20 plants to the same test treatment without any control experiment, therefore, the farmer evaluates the plants based on how much they grow compared to each other, that is if they grow more or less than their pairs
Therefore a one-tailed test should be used.