Critique Reasoning Jacob says that the surface area of the cube is less than 1,000 cm2. Do you
agree with Jacob? Explain.

jacob is right

Step-by-step explanation:

each face in a cube is equal, and we know that there are six sides on a cube

this means that we need to find the surface area of one side and multiply it by six to see if jacob is correct

to find the area of one side you would do

a = Lw

a = 10 * 10

a = 100

so one face equals 100 cm^2 so 100 * 6 = 600

600 is less than 1000 so jacob is correct

answer: the price of one pound cabbage = $ 0.8

the point (10,8) represents that the cost of 10 pounds cabbage is $ 8

step-by-step explanation:

since, here is a proportional relation between the number of pounds of cabbage (x) and the price in dollars (y).

therefore, we can write,

⇒ y = k x

where k is the constant of proportionality.

now, point (5,4) is in the line.

thus, it will satisfies the above equation of line.

⇒ 4 = 5 k

⇒ k = 0.8

thus, the equation of the line is,

y = 0.8 x

a) for x = 1,

y = 0.8

therefore, the cost of one pound of cabbage is 0.8 dollars.

b) in the below graph (10,8) represents that the cost of 10 pounds of cabbage is 8 dollars.

x² + 11x + 18 < 0  

[-11 ± sqrt(121 - 72)]/2 = (-11 ± 7)/2  

solution: (-9, -2)

step-by-step explanation: