Answer:
97
Step-by-step explanation:
Given that:
Low = 43bpm
High = 115 bpm
Error = 3
α = 90%
To find the range estimate :
Standard destviation = (high - low) / 4
Standard deviation = (115 - 43) / 4
Standard deviation = 72/4 = 18
The sample size,(n) :
n = [(Zα/2 * sd)/E] ²
2 - tail = (Zα/2) = 1.645
[(Zα/2 * sd)/E] ² = [(1.645 * 18) / 3]² = (29.61/3)²
= 97.41
Sample size = 97
Answer:
The measure of angle 8 is 50 degrees and the measure of angle 7 is 45 degrees
Step-by-step explanation:
Answer:
One
Step-by-step explanation:
Find the value of B
Applying the law of sines
= 
substitute the given values
= 
sin (B) =
Sin(61)
step 2
Find the measure of angle C
Remember that the sum of the interior angles in any triangle must be equal to 180 degrees
so
61 + 65.87 + C = 180
C = 53.13
step 3
Find the value of c
Applying the law of sines
= 
substitute the given values
= 
c =
SIN (53.13)
C=21.04 units
so
there can only be one value for each measurement, therefore there can only be one triangle