Answer:
not a function I don't know the range tho
Step-by-step explanation:
Since x
=
3 produces y
=
3 and y
=
−
2
, the relation (
−
2
,
−
2
)
,
(
−
2
,
4
)
,
(
-1
,
1
)
,
(
1
,
0
)
,
(
1
,
1
)
,
(
3
,
3
)
,
(
3
,
−
2
)
is not a function.
Answer:
3.7 hours
Step-by-step explanation:
Pat could do the job alone in 8 hours.
Patti could do the job alone in 7 hours
Output = Rate * time
Let the rate at which pat does the work = Rp
Let the rate at which Patti does the work = Rt
Let X be the total output
Rp * 8 = X
Rp = X/8
Rt * 7 = X
Rt = X/7
If both pat and Patti pick apples, we have
(Rp+Rt)T = X
(X/8 + X/7)T = X
[(7X + 8X)/56]T = X
[X(7+8)/56]T = X
Divide both sides by X
[(7+8)/56]T = 1
(15/56)T = 1
T = 56/15
T = 3.7 hours
X = 36/5 , X = 7 1/5 , X = 7.2
Answer:
The sale price of the pair of shoes using Kala's analogy is $42.
Step-by-step explanation:
Kaka believes a discount of 25% and an additional discount of 40% mean that the total discount is 65%, that is the shoe is 65% off.
Using her analogy, the total discount would be 65% of the original price.
Total discount = 0.65 × $120 = $78
Then, the sale price = (original price) - (total discounts) = $120 - $78 = $42
The sale price of the pair of shoes using Kala's analogy is $42.
Hope this Helps!!!
Answer:
There is no sufficient evidence to suggest that the relaxation exercise slowed the brain waves
Step-by-step explanation:
Given that in a experiment on relaxation techniques, subject's brain signals were measured before and after the relaxation exercises with the following results:
The population is normally distributed
This is a paired t test since sample size is very small and same population under two different conditions studied.
(Right tailed test)
Alpha = 5%
x y Diff
32 26 6
38 36 2
66 59 7
49 52 -3
29 24 5
Mean 3.4
Std dev 4.037325848
Mean difference = 
n =5
Std deviation for difference = 
Test statistic t = mean difference / std dev for difference
= 
p value =0.132
Since p >0.05 we accept null hypothesis.
There is no sufficient evidence to suggest that the relaxation exercise slowed the brain waves
