What are the solutions to the equation x² = 625?
choose all answers that are correct.
a.
–312.5
b.
–25
c.
25
d.
312.5

B - 25

C. 25

Step-by-step explanation:

What are the solutions to the equation x² = 625?

The expression is

x² = 625

The expression want us to find the value of x.

x² = 625

since x is in square, to cancel the square on x we square root both sides.

Square rooting both sides

√x² = √625

x = √625

x = 25

The value of x is 25

The answer can also be -25 , since the square of -25 is also equals to 625.

-25 × -25 = 625

step-by-step explanation:

i think you should think about the question and not look online.

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.