640 x 0.30= 192
640-192= 448
448 is the answer
Answer: 8cm
Step-by-step explanation:

Solve for h;



The answer is -6/5
First convert the equation to y=mx+b form
you’ll get y=5/6x+27
then to find the line perpendicular to this equation, you have the flip the slope.
ending with -6/5
It is a i think sorry if wrong
Answer:
a) 45
Step-by-step explanation: