It’s 90 degrees because it’s a right angle
Answer:
21 is the answer
Step-by-step explanation:
The modulus ar absolute symbol...the two straight lines does not take into consideration the positive or negative signs and the answer always remains positive with the same numbers like in this case it is 21.
<u>Part A</u>
x² + 5x + 4 = 0
x = <u>-(5) +/- √((5)² - 4(1)(4))</u>
2(1)
x = <u>-5 +/- √(25 - 16)</u>
2
x = <u>-5 +/- √(9)</u>
2
x = <u>-5 +/- 3</u>
2
x = <u>-5 + 3</u> U x = <u>-5 - 3</u>
2 2
x = <u>-2</u> x = -<u>8</u>
2 2
x = -1 x = -4
<u>Part B</u>
4x² - 12x + 5 = 0
x = <u>-(-12) +/- √((-12)² - 4(4)(5))</u>
2(4)
x = <u>12 +/- √(144 - 80)</u>
8
x = <u>12 +/- √(64)</u>
8
x = <u>12 +/- 8</u>
8
x = <u>3 +/- 2</u>
2
x = <u>3 + 2</u> U x = <u>3 - 2</u>
2 2
x = <u>5</u> x = <u>1</u>
2 2
x = 2.5 x = 0.5
<u>Part C</u>
2x² - 10x + 3 = 0
x = <u>-(-10) +/- √((-10)² - 4(2)(3))</u>
2(2)
x = <u>10 +/- √(100 - 24)</u>
4
x = <u>10 +/- √(76)</u>
4
x = <u>10 +/- 2√(19)</u>
4
x = <u>5 +/- √(19)</u>
2
x = 2.5 <u>+</u> 0.5√(19)
x = 2.5 + 0.5√(19) U x = 2.5 - 0.5√(19)
Answer:
Here's a graph picture of all of the coordinates formed into a triangle.
Step-by-step explanation:
Its a PNG image.
If Perimeter is P=2l+2w then
2w=P-2l
therefore
w=(p-2l)/2