Answer: -6 +/-
= x
<u>Step-by-step explanation:</u>
y = x² + 12x - 5
<u> +5 </u> <u> +5 </u>
y + 5 = x² + 12x
<u> + 36 </u> <u> +36 </u> <em>added (12 ÷ 2)² to both sides</em>
y + 41 = (x + 6)²
To find the zeros, let y = 0:
0 + 41 = (x + 6)²

= x + 6
<u>-6 </u> <u> -6 </u>
-6 +/-
= x
Answer:
The percentage of paycheck Joan saves is 5% .
Step-by-step explanation:
Given as :
The paycheck that Joan gets each months = x = $1,000
The money that Joan saves from each paycheck = y = $50
Let The percentage of paycheck Joan saves = z%
<u />
<u>Now, According to question</u>
The percentage of paycheck Joan saves =
× 100
Or, z =
× 100
Or, z =
× 100
Or, z = 5%
So, The percentage of paycheck Joan saves = z = 5%
Hence,The percentage of paycheck Joan saves is 5% . Answer
Answer:
Step-by-step explanation:
- The Z-score allows you to decide if your sample is different from the population mean. In order to use z, you must know four things:
- The population mean.
- The population standard deviation.
- The sample mean.
- The sample size.
- Usually in stats, you don’t know anything about a population, so instead of a Z score you use a T-Test with a T Statistic.
- The major difference between using a Z score and a T statistic is that you have to estimate the population standard deviation. The T test is also used if you have a small sample size (less than 30).
Answer:

Step-by-step explanation:
Area of the shaded region→

→ 
→

hope it helps..
have a great day!!!