2 years ago

If 3x^2-2x+7=0 then (x-1/3)^2=

1 answer:

5 0

3x^2−2x+7=0
3x^2−2x+1/3+7−1/3=0
3(x^2−2x/3+1/9)+7−1/3=0
3(x−1/3)^2+(21−1)/3=0
3(x−1/3)^2=−20/3
(x−1/3)^2=−20/9

You might be interested in

What is 14/48 in lowest terms

Marianna [84]

Answer:

7/24

Step-by-step explanation:

14 ÷2 7

------------- = -------------

48 ÷2 24

3 0

2 years ago

Read 2 more answers

Solve the problem for Y 3x + y = 7

sergejj [24]

Answer:

not possible with info given

Step-by-step explanation:

6 0

3 years ago

A group of friends went to lunch. The bill, before sales tax and tip was $35.55. A sale tax of 6% was added. The group then tipp

Mashcka [7]

I did the math and I think it is $62.20??

4 0

2 years ago

Read 2 more answers

An environmental group at a local college is conducting independent tests to determine the distance a particular make of automob

melomori [17]

Answer:

$26.5265$

Step-by-step explanation:

Confidence Interval

When the population standard deviation $\sigma$ is known, the formula for a confidence interval for a population mean $\bar x$ is:

$\displaystyle \bar x \pm z\frac{\sigma}{\sqrt{n}}$

Where n is the sample size and z is the corresponding z-value from the standard normal distribution for the selected confidence level. The value of z for a 95% confidence interval is z=1.96. The rest of the values are

$\bar x=28.2,\ \sigma=2.7, \ n=10$

Calculating the confidence interval

$\displaystyle 28.2 \pm 1.96\frac{2.7}{\sqrt{10}}$

$\displaystyle 28.2 \pm 1.6735$

Or, equivalently

$26.5265$

6 0

3 years ago

William earns a base salary of $150.00 every week with an additional 12%, commission on everything he sells. If William sold $60

Veseljchak [2.6K]

6050 x .12 =726
726 + 150 = 876

8 0

3 years ago