22)
(x^2-16)(x^2+4)=0
can you finish?
solve for x (plus and minus because two solution and degreee 4 so total 4 answers )
x=+-4 x=+-2
hope this helps.
for 10 I know a way but it might confuse you
Answer:
x≤ -3/8
Step-by-step explanation:
Expand ;
Simplify
Answer:
15+15+40+40+40= 150
Step-by-step explanation:
Triangle x2]
(5 x 6) / 2
15
Rectangle x3]
(8 x 5)
40
only for a triangle, we divide by 2
Your answer is <u>150cm square.</u>
<u>But you do not have that option so I would pick the closes one if I were you. Have a good day.</u>
admins, pls delete this, I messed up and don't know how
Lets say we have a rectangle. if the ratio is 7:5, we can put the width as 7x, and the length as 5x (or vice versa, it doesn't really matter.) If the perimeter is solved by 2(h+w), we have 2(7x+5x)=96, or 2(7x)+2(5x)=96, which is C
