for all values of x , a function f is defined by f(x)=x^2+7x+12 if f(a)=2, what could be the value of a?

a = -2 or a = -5

Step-by-step explanation:

We want . We can subtract 2 from both sides of this equation to get . We can factor this to get that . When the product of two numbers is equal to zero, one of the numbers must be equal to zero. This means that either a + 2 = 0, in which case a = -2, or a + 5 = 0, in which case a = -5.

a. 12.5 kg

step-by-step explanation:

f = ma

so

m = f/a = (2500 n)/(200 m/s²) = 12.5 kg

1 n = 1 kg·m/s²