Answer:
y = -7
Step-by-step explanation:
The plot for January places the median age at 40, so half of the surveyed group was over 40. That would be half of 100 people, or 50 people.
The plot for July places the upper quartile at age 40, so 1/4 of the surveyed group was over 40. That would be 1/4 of 100 people, or 25 people.
There were 50 - 25 = 25 more visitors over the age of 40 at the beach in January.
Step-by-step explanation:
0.2x - 1 = -1
first write out the problem
0.2x - 1 = -1
+1 +1 Add 1 to both sides to remove the -1 from the same side as x
0.2x = 0
/0.2 /0.2 Divide the number being multiplied with x to get x alone
0/0.2 = 0
x = 0 Now you have the answer.
Answer:
(25.732,30.868)
Step-by-step explanation:
Given that in a random sample of 42 people, the mean body mass index (BMI) was 28.3 and the standard deviation was 6.09.
Since only sample std deviation is known we can use only t distribution
Std error =
t critical for 99% two tailed
Margin of error
Confidence interval lower bound =
Upper bound =
Answer: 2x+11x+1x+1=2x2+x+2xx
Step-by-step explanation:
Step 1: Factor both the numerator and the denominator. ...
Step 2: Write as one fraction. ...
Step 3: Simplify the rational expression. ...
Step 4: Multiply any remaining factors in the numerator and/or denominator. ...
Step 1: Factor both the numerator and the denominator.
Step 2: Write as one fraction.