Answer:
Step-by-step explanation:
#22
<h3>Given </h3>
- Equation x² -4x + 1 = k(x - 4) with equal roots
<h3>To find</h3>
<h3>Solution</h3>
<u>The equation in standard form is:</u>
- x² -4x + 1 = k(x - 4)
- x² - 4x - kx + 1 + 4 = 0
- x² - (k + 4)x + 5 = 0
<u>When the quadratic equation has equal roots its discriminant is zero</u>
- D = 0
- b² - 4ac = 0
- (k + 4)² - 4*5 = 0
- (k + 4)² = 20
- k + 4 = ± √20
- k = - 4 ± √20
- or
- k = -4 ± 2√5
Answer:
22/3 yards, roughly 7.33 yards.
Step-by-step explanation:
We know that there is 3 feet in 1 yard.
Given 22 feet, we divide by 3 to find the amount of yards, thus changing the unit.
The exact amount of yards is just 22/3, which you can estimate to 7.33 yds.
Answer:
42
Step-by-step explanation:
Average =
Sum of the terms/ number of terms
Terms here refers to the data or the values given
So,
The sum is 12+43+51+62= 168
The number of terms is 4
Therefore the average is,
168/4
= 42
Answer: Try putting the positive number and then the negative number after the and like the example.
Step-by-step explanation:
Your answers are right, it could be a glitch.
A = (P/4)(P/2 - P/4)
= (P/4)^2
Therefore it is a square
Playground
256 yd^2
P least perimeter
256 = (P/4)^2
P/4 = √256
= 16
P = 4*16
= 64
The least fencing is 64 yards.
Hope I helped!
