$x^2-36=5x\ \ \ |-5x\\\\x^2-5x-36=0\\\\x^2-9x+4x-36=0\\\\x(x-9)+4(x-9)=0\\\\(x-9)(x+4)=0\iff x-9=0\ \vee\ x+4=0\\\\\boxed{x=9}\ \vee\ x=-4$

Answer: x = 9

8 0

4 years ago

Tatiana [17]

Answer:

Step-by-step explanation:

6 0

2 years ago

the manager of a grocery store has taken a random sample of 100 customers the average length of time it took these 100 customers

lora16 [44]

Answer:

with a .95 probability, the sample mean will provide a margin of error 0.196

Step-by-step explanation:

margin of error (ME) from the mean can be calculated using the formula

ME= $\frac{z*s}{\sqrt{N} }$ where

z is the corresponding statistic in the .95 confidence level (1.96)

s is the population standard deviation (1 min.)

N is the sample size (100)

ME= $\frac{1.96*1}{\sqrt{100} }$ =0.196

95% confidence interval for check-out time would be 3 ±0.196 min

8 0

4 years ago

Why am I trying to make the equation true? And why is there no solution?

Dmitry_Shevchenko [17]

Answer:

there are none alejchskw

5 0

3 years ago