The correct answer would be 41
round to the nearest
hundredth of milligram : 4.27
tenth of milligram: 4.3
milligram : 4
Answer:
option B
$28.80
Step-by-step explanation:
Given the question,
side length of one square tile = 9 inches
area of square tile = l² = 9² = 81 inches²
<h3>Step1</h3>
There are 48(96) = 4608 carpet tiles, so the company was making 4608($.05) = $230.40.
<h3>Step2 </h3>
Now, the company countered with square feet. We have a total of 4608(81) = 373,248 square inches.
1 square foot = 144 square inches.
373,248/144 = 2592 square ft.
2592($.10) = $259.20
$259.20 - $230.40 = $28.80
N/4.3 = 9.4
4.3 × n/4 = 9.4 × 4.3
n = 40.42
Answer:
Let the speed of the train be x km/h.
Case 1:
Distance = 288 km
Speed = x km/h
Time = Distance/Speed
= 288/x h
Case 2:
Distance = 288 km
Speed = (x+4) km/h
Time = 288/x + 4 h
Since 288/x > 288/x + 4
288/x - 288/x+4 = 1
288[1/x - 1/x+4 ] = 1
[ x + 4 - x / x(x + 4) ] = 1/288
[4 / x^2 + 4x ] = 1/288
x^2 + 4x = 1152
x^2 + 4x - 1152 = 0
x^2 + 36x - 32x - 1152 = 0
x(x + 36) - 32(x + 36) = 0
(x + 36)(x - 32) = 0
x + 36 = 0 , x - 32 = 0
x = -36 , x = 32
x = -36 , rejected since speed cannot be negative.
Therefore , speed of the train = 32 km/h
