Jeff is baking a cake. the recipe says that he has to mix 32 grams of vanilla powder to the flour. jeff knows that 1 cup of that particular vanilla powder has a mass of 128 grams. he added two over three of a cup of vanilla powder to the flour. should jeff add more vanilla powder to make the exact recipe, or did he go over and by what amount? he needs to add1/ 4 of a cup he went over by 5/ 12 of a cup he went over by 1/ 4 of a cup he needs to add 5/ 12 of a cup

x= -3 and

step-by-step explanation:

to find the roots of a cubic, use division or factoring to find the factors then set equal to 0. as this is a difference of cubes, it factors into

where a is the cube root of .

here   this is 27 and the cube root of 27 is 3. so we write using the form:

.

set each factor to 0 and solve for x.

x-3=0

x=3

the quadratic expression does not factor and must be solved using the quadratic formula.

where a = 1, b=3, and c=9

this cubic has two complex roots.

54 kilometers per hour

step-by-step explanation:

according to rules:

1 km = 1000 meter

which means that 1 meter = 1/1000 km

1 hour = 3600 second [ as 1 hour = 60 min = 60 *60 seconds ]

which means that 1 second = 1/3600 hour

therefore, 1 kilometer/hour =

thus to convert 15 meter per second to kilometer per hour, we multiply 15 to 3.6 kilometer/hour.

15 meter/second=   which is the required answer.

7/2

(decimal: 3.5)

welcome ; )

step-by-step explanation: