Pretty sure you input whatever x= in the x in the equation, so it would be -4*-2 which is 8
Answer:
So, BC = 5.6 cm
Step-by-step explanation:
Since its a right angled triangle,
taking 62 as reference angle,
cos62 = b/h
or, cos62 = AB/BC
or, cos62 = AB/12cm
or, cos62×12cm = BC
so, BC = 5.63
The answer for this question is 20
8-21
9- -16 i think lemme do the next ones
Y = 42.5x + 45.....for 5 hrs.....x = 5
y = 42.5(5) + 45
y = 212.50 + 45
y = 257.50 <===
