Find a real number c such that x^(2)+12x+c is a perfect square trinomial.

The value of c is 36

Step-by-step explanation:

Now, we fine the perfect square polynomial, we need to have the expression of the form:

so this can be written as a perfect square as:

Now the expression given to us is:

so when c is 36, we will get:

Now, this can be re-written as:

so here we can see that it is of the form:

so the perfect square is:

Hence, when c = 36 we get a perfect square.

∠acb = 8°

step-by-step explanation:

∠xba lies on the circle and is half the measure of the intercepted arc ax

hence

measure of arc ax = 2 × 42° = 84°

∠acb is outside the circle and is

∠acb = (arcab - arcax ), hence

∠acb = 0.5 (100 - 84) = 0.5 × 16° = 8°

seems like d

step-by-step explanation: