Answer:
B. 1.5r + 5
Step-by-step explanation:
Because he bought 1 yardstick and r rulers so to find the total number you need to add both numbers together.
Answer:
Its n = 45
Step-by-step explanation:
Multiply both sides of the equation by 3 .
3 ⋅ 
= 3 ⋅ 14
Simplify both sides of the equation.
n = 45
I hope this helps
if you could, feel free to mark me Brainliest it would be much appreciated :D
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139 = x + (2x + 10)
139 = 3x + 10
129 = 3x
/3 /3
43 = x
Therefore
Answer:
Following are the solution to the given question:
Step-by-step explanation:
Confidence Interval for both the percentage of all x-ray machines
p = the machinery's share is not working:
Lower Confidence interval = p - error margin 
Upper Confidence Interval = p + error margin
So, Confidence Interval 
