EXERCISE 1: You have two vehicles at home. One Sedan that has a mileage of 28 mi/ gal and can utilize only premium gasoline currently at 3.45 $/gal. The second vehicle is an SUV with a mileage of 24 mi/gal that can work with regular gasoline currently at 2.88 $/gal . If you need to travel for business a distance of 323 miles and pay 65 $ total in tolls: find the total cost of the trip using
each vehicle and recommend the least expensive one.

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

12

step-by-step explanation:

answer: -0.5 would be the most likley outcome

step-by-step explanation:

step-by-step explanation:

the triangles are similar. therefore the corresponding sides are in proportion:

              cross multiply

            divide both sides by 32