Find the zeros of y = x2 - 8x - 3 by completing the square.

O A. X= +13
O B. X= 3 ± √7
O C. X= -4±√19
O D. x = 4±√19

step-by-step explanation:

given expression is .

now we need to simplify the given expression .

we know that square root is equivalent to the power 1/2. so that means we can take half of the exponents to get the square root of given expression.

expanding that will give a very very large number so let's keep answer in exponent form.

1,407.5 hours

step-by-step explanation:

we first convert all the time to hours and then sum them up.

there are 24 hours in 1 day, in 58 days, there are 24 x 58 = 1,392 hours.

there are 60 minutes in 1 hour, thus, 30 minutes will be equivalent to 30 / 60 = 0.5 hours.

therefore, the number of hours it will take mercury to complete a full rotation is 1,392 + 15 + 0.5 = 1,407.5 hours

vertical=18cm horizontal=18cm hypotenuse=25.5

step-by-step explanation:

160 cm

step-by-step explanation:

you have to add all the sides together