Xy 14
x + y = -4
x + y = -4
x - x + y = -x - 4
y = -x - 4
xy = 14
x(-x - 4) = 14
x(-x) - x(4) = 14
-x² - 4x = 14
-x² - 4x - 14 = 0
-1(x²) - 1(4x) - 1(14) = 0
-1(x² + 4x + 14) = 0
-1 -1
x² + 4x + 14 = 0
x = -(4) ± √((4)² - 4(1)(14))
2(1)
x = -4 ± √(16 - 56)
2
x = -4 ± √(-40)
2
x = -4 ± 2i√(10)
2
x = -2 ± i√(10)
x + y = -4
-2 ± i√(10) + y = -4
- (-2 ± i√(10)) - (-2 ± i√(10))
y = -2 ± i√(10)
(x, y) = (-2 ± √(10), -2 ± √(10))
The two numbers that multiply to 14 and add up to -4 are -2 ± i√(10).
Answer:
$8.75
Step-by-step explanation:
Simple interest can be determined using this formula :
principal x time x interest rate
principal = $1400
time = 6 months = 6/12 = 0.5
interest rate = 1.25%
$1400 x 0.5 x 0.0125 = $8.75
Answer:
-17 + 5(n - 1)
Step-by-step explanation:
The general form is a1 + d(n - 1) where a1 = first term and d = common difference
So its -17 + 5(n - 1)
I would try using order of operations (PEMDAS) & that should help ! im not good at math tho so :o
Answer:
Step-by-step explanation:
<u>As KL║JM and JL is transversal, we already have:</u>
<u>To satisfy AAS we need to have ∠JKL≅LMJ, therefore:</u>
- m∠JKL = m∠LMJ
- 2x+ 18 = 3x - 47
- 3x - 2x = 18 + 47
- x = 65
Correct option is C
