Plz help will mark brainlest 1 hour 2 or more must answer and it must be right

for the first one its a=8

for the second one the answer is their is no solution

for the last one the answer is p = -1.

Step-by-step explanation for the last one:

1)Expand.

30-6p=16-20p

2) Subtract 16 from both sides.

30-6p-16=-20p

3 Simplify  30-6p-16 to -6p+14.

-6p+14=-20p

4 Add 6p to both sides.

14=-20p+6p

5 Simplify  -20p + 6p  to −14p.

14=-14p14=−14p

6 Divide both sides by−14.

-1=p

7 Switch sides.

p=-1

∠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°

i can answer this question sweetie!

step-by-step explanation: