Does 0.9x+5.1x-7=2(2.5x-3) have no solution many solutions or one solution?

This equation has ONE unique solution, which is x = 1.

Step-by-step explanation:

Let's actually solve this equation, 0.9x+5.1x-7=2(2.5x-3).

Mult. all four terms by 10 to eliminate the fractions:

9x+51x-70=2(25x-30)

Perform the indicated multiplication:

9x+51x-70= 50x - 60

Combine like terms:  60x - 70 = 50x - 60  =>  10x = 10, and x = 1

This equation has ONE unique solution, which is x = 1.

answer

explanation

the area of a circle is calculated using the formula

or

we can use any of the above formulae to calculate the required. preferably, let us use the latter since the diameter is

we substitute the diameter into the formula to get:

this is the exact value for the area of the circle.

the correct answer is a

what is the model?

step-by-step explanation: