Question

1. $(5x - 1)^circ$

$(14x - 4)^circ$

1. $x^circ$

$84^circ$

Explanation:

Step1: Solve for x (Question 15)

Sum angles to 90°:
$$(5x - 1) + (14x - 4) = 90$$
Simplify left side:
$$19x - 5 = 90$$
Add 5 to both sides:
$$19x = 95$$
Divide by 19:
$$x = \frac{95}{19} = 5$$

Step2: Solve for x (Question 8)

Sum angles to 90°:
$$x + 84 = 90$$
Subtract 84 from both sides:
$$x = 90 - 84 = 6$$

Answer:

Question 15: $x=5$
Question 8: $x=6$