Answer:
x = -3±i sqrt(2)
Step-by-step explanation:
x^2+6x + 11 =0
Subtract 11 from each side
x^2+6x + 11-11 =0-11
x^2+6x =-11
Take the coefficient of the x terms
6
Divide by 2
6/2 =3
Square it
3^2 =9
Add it to each side
x^2+6x + 9 =-11+9
x^2 + 6x+9 = -2
The left hand side becomes (x+ (6/2) )^2
(x+3)^2 = -2
Take the square root of each side
sqrt((x+3)^2) = ±sqrt(-2)
x+3 = ±sqrt(-2)
x+3= ±i sqrt(2)
Subtract 3 from each side
x+3-3 = -3±i sqrt(2)
x = -3±i sqrt(2)
Answer:
<h3>Given =><em><u> </u></em><em><u>f(a)=2(a+4)-3</u></em></h3><h3>To Attain=> <em><u>The value of f(3) for the function</u></em></h3>
Step-by-step explanation:
• By Putting the value of a = 3
•f(a)=2(a+4)-3
=>
• Hence, <em><u>1</u></em><em><u>1</u></em><em><u> </u></em><em><u>is </u></em><em><u>the </u></em><em><u>solution</u></em><em><u> </u></em><em><u>to </u></em><em><u>the </u></em><em><u>function</u></em><em><u> </u></em>
Yes this is math problem sry I don’t know it just needed to a wet
Answer:
x = 6
Step-by-step explanation:
3x - 7 = 11
3x = 11 + 7
3x = 18
x = 6
Answer:
Median = 5
Lower Quartile = 2.5
Upper Quartile = 8.5
Step-by-step explanation:
- First of all, you need to order the numbers from lowest to greatest: 2 2 3 4 4 6 6 8 9 9
- Then, you will find at the number that sits exactly at the middle of this set of numbers. Because this is a set of numbers that has 10 numbers, you will have to look at the two middle points (4 and 6) and divide them by 2 (essentialy finding the average).
4+6=10, 10/2 = 5 = Mean
- To find the upper and lower quartiles, you basically have to find the medians of the set of numbers that are below and above the central median
- So, for the lower quartile, the set of numebrs is: 2 2 3 4. The median sits between 2 and 3, so we have to find the average of those: 2+3=5, 5/2=2.5
- For the upper quartile, the set of numbers is 6 8 9 9. The median is the average of 8+9. So 8+9=17, 17/2 = 8.5
