X^2=3x+3 using the quadratic formula,show steps

1 answer:

8 0

X²=3x+3
x²-3x-3=0. have to get 0 on right first
identify a,b,c. a is 1, b is -3, c is -3
now plug in to the quadratic formula...

x = -b±√(b²-4*a*c) / 2a

x = -(-3) ± √((-3)²-4*1*(-3)) / (2*1)

x= 3 ± √(9- -12) / 2

x=( 3 ± √21) /2

You might be interested in

I need help what’s the answer?

KonstantinChe [14]

Answer:

Step-by-step explanation:

3 0

3 years ago

A marathon runner ran the first 4 mi

Roman55 [17]

Step-by-step explanation:

4 miles / 27.8 min = 0.14388 miles per minute

26.2 / 0.143888 = 182.1 min

5 0

4 years ago

Read 2 more answers

For every 2 hours, approximately $1,302 worth of product is sold to consumers. How much money will the company make from selling

valkas [14]

Answer:

391,248 dollars

Step-by-step explanation:

8 0

3 years ago

I don't know how to do this please help me! NO LINKS!

Anon25 [30]

Answer:

To find the equivalent positive angle of a negative angle, just add 360 to it until it becomes positive and is between 0 and 360 degrees. -244 + 360 = 116.

Step-by-step explanation:

6 0

3 years ago

You measure 25 turtles' weights, and find they have a mean weight of 31 ounces. Assume the population standard deviation is 12.8

Firlakuza [10]

Answer:

Margin of error = 4.21 ounces

Step-by-step explanation:

According to the Question,

Given That, You measure 25 turtles' weights, and find they have a mean weight of 31 ounces. Assume the population standard deviation is 12.8 ounces

Therefore, Sample mean = 31 ounces , Sample size(n) = 25 , Alpha(α) = 0.10 & Population standard deviation(σ) = 12.8 ounces

Thus, Margin of error = $Z_{critical}$ × σ / √n ( $Z_{critical}$ at α=.010 is 1.645)

Putting The Values, We get

1.645 × (12.8 / √25 ) ⇒ 4.2112 ≈ 4.21

Thus, the maximum margin of error associated with a 90% confidence interval for the true population mean turtle weight is 4.21 ounces

8 0

3 years ago