Can someone plz help me with the first one also it will be appreciated if u could show working out too!

Angles in a quadrilateral add up to 360°.

Difference between largest & smallest angles =

60 is the difference the largest & the smallest angle.

= 5

step-by-step explanation:

to find the 15th term substitute n = 15 into the nth term formula

= (- 3 × 15 ) + 50 = - 45 + 50 = 5

the solution is x=1

step-by-step explanation:

we are given our   equation as

let's assume

left side function is

right side function is

now, we can draw graph

and then we can get intersection point

the intersection point will be solution

so, the solution is

x=1