Maria decided to take her family out for dinner at a restaurant the total cost was $96.00 She decided to leave the waiter a tip of %18 of the cost of the dinner What is the total cost of the dinner including the tip without the tax

$113.28 is the total cost

Step-by-step explanation:

18%= 0.18

96 x 0.18= $17.28

96 + 17.28= $113.28

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

1) 2/5

2) zero=0/1

3) zero=0/2

4) -4/5

5) undefined=3/0