Find the area of the room by multiplying the length by the width:
Area of room = 15.5 x 18.5 = 286.75 square feet.
Divide the total area of the room by the area of a box to find the number of boxes needed.
286.75 / 25 = 11.47
Since you can't buy a partial box, round up to the nearest whole number.
You need B. 12 boxes total.
Answer:
Step-by-step explanation:
width= x
length= x+6
perimter = 2x+ 2(x+6)
36= 2x+ 2x+ 12
36= 4x + 12
36-12= 4x
4x= 24
x= 6
therefore width= 6cm
length= 6+6 = 12
-18.5 = -2 (7f + 7.5)
-18.5 = -2×7f + (-2)×7.5
-18.5 = -14f + (-15)
-18.5 = -14f - 15
add 15 to both sides
-18.5 +15 = -14f - 15 + 15
-3.5 = -14f
f = -3.5/-14 = 0.25
X+y=4
2x+y=6
make first equation negative
-x-y=-4
add to first equation
2x-x+y-y=6-4
x=2
subsitute
x+y=4
2+y=4
y=2
or
x+y=4
subtract x from both sdies
y=4-x
subsitute 4-x for y in second equation
2x+4-x=6
x+4=6
x=2
Answer:
They are a Pythagorean triple that forms a right triangle
Step-by-step explanation:
a2 + b2 = c2
(5)^2 + (12)^2 = (13)^2
25 + 144 = 169
(13)^2 = 169
