Answer:
16x square -9
Step-by-step explanation:
4x^2-9=
4x*4x-9
16x square -9
Answer:
for the first picture:
1. 1
2. 0.8
3. 0.4
for the second picture:
2,256
srry if i needed to show the steps
Ok so material needed=surface area
SA=2(LW+LH+WH)
note: LW means legnth times width
so
first box is
8 inches by 6.25 by 10.5
assign them
8=legnth
6.25=width
height=10.5
SA=2(8 times 6.25+8 times 10.5+6.25 times 10.5)
SA=2(50+84+65.625)
SA=2(199.625)
SA=399.25
second box
9 by 5.5 by 11.75
L=9
W=5.5
H=11.75
SA=2(9 times 5.5+9 times 11.75+5.5 times 11.75)
SA=2(49.5+105.75+64.625)
SA=2(219.875)
SA=439.75
so we now have
first box=399.25 in^2
second box=439.75 in^2
439.75>399.25
second box needs more material
Answer:
1. is 0.9 or 9/10. 2. is 43/36 or 1.19
