Solve this quadratic equation by completing the square. x2 + 8x = 10
A. *--4/10
B. X=-8/26
O c. x= -4/26
O D. x= -8 5/10
SHIMIT

x = - 4 ±

Step-by-step explanation:

Given

x² + 8x = 10

To complete the square

add ( half the coefficient of the x- term )² to both sides

x² + 2(4)x + 16 = 10 + 16

(x + 4)² = 26 ( take the square root of both sides )

x + 4 = ± ( subtract 4 from both sides )

x = - 4 ± ← exact solutions

$4034.40

the perimeter of the field is the sum of the lengths of the four sides:

47 yd + 158 yd + 47 yd + 158 yd = 410 yd

the cost of 3 ft (1 yd) of fence is 3×$3.28 = $9.84.

so the cost of jake's wood perimeter fance is

(410 yd) × ($9.84 /yd) = $4034.40

c = 0.429t

step-by-step explanation:

the constant rate at which carlos harvests cassava is 35 minutes per 15 cassavas 15/35 = 0.429 cassava per minute

therefore, an equation that models the number of cassava (c) that harvest carlos in a time (t) is the following:

where t is the time in minutes.

this means that when 35 minutes have elapsed 15 cassava have been harvested, at 70 minutes 30 cassava have been harvested and so on.