Acar wash charges a flat rate for the first 8 minutes of washing time and also charges a certain amount for each additional minute of washing time. gina took 12 minutes to wash her car and it cost her a total of $5.00. kris took 17 minutes to wash his truck at a total cost of $6.25.

the flat rate for the first 8 min:4$

For every additional min:0.25$

Step-by-step explanation:4$+(4*0.25$)=5$

4$+(9*0.25$)=$6.25

x = ±sqrt(10)

step-by-step explanation:

5 - 2x² = -15

subtract 5 from each side

5-5 - 2x² = -15-5

-2x^2   = -20

divide by -2 on each side

-2x^2   /-2= -20/-2

x^2 =10

take the square root on each side

sqrt(x^2 )=±sqrt(10)

x = ±sqrt(10)

check:

5 - 2x² = -15

+sqrt(10)

5 - 2(sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15

-sqrt(10)

5 - 2(-sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15

the highest percentage for deaths in construction from highest to lowest is as follows: falls, struck by objects, electrocution, and caught-in/between. these four are collectively known as fatal four.

in the case of falls, the type that is responsible for the overall highest death in the category is falls from roofs.