Answer:
x = 3/4 and x = -4/5
Step-by-step explanation:
20x⁴ + x³ + 8x² + x − 12
Group:
(20x⁴ + 8x² − 12) + (x³ + x)
Factor:
4 (5x⁴ + 2x² − 3) + x (x² + 1)
4 (5x² − 3) (x² + 1) + x (x² + 1)
(x² + 1) (4 (5x² − 3) + x)
(x² + 1) (20x² + x − 12)
(x² + 1) (4x − 3) (5x + 4)
So the rational roots are x = 3/4 and x = -4/5.
Answer:
AEB =305° as stated below
Step-by-step explanation:
AEB is the larger area starting A to EB and missing out the small AB area
EC = 180° = supplementary we label 87° angle to P.
P+ BCD = 87, + 38 = 125°
ABCD = 180°
180 - BCD = 180-125°
AB = 55°
Therefore AEB = 360-55=305°
Answer:
3 miles= 4 minutes
? miles=60 minutes
<u>3 x 60</u>
4
=45 miles
Step-by-step explanation:
9514 1404 393
Answer:
A = 2000(1 +1)^(t/9)
$64,000
Step-by-step explanation:
The growth rate is 100% in 9 years, so the equation can be written ...
A = 2000(1 +1.00)^(t/9)
The amount in 45 years is ...
A = 2000(2^5) = 2000×32 = 64,000 . . . dollars
