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Llana [10]
3 years ago
12

2. A rope is thrown over a beam, and one end is tied to a 300 N bundle of lumber. You pull the free end of the rope 2 m with a f

orce of 400 N to lift the lumber off the ground. How much work have you done?​
Mathematics
1 answer:
bonufazy [111]3 years ago
3 0

504 water resource of number of the lumber of the ground

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tresset_1 [31]

Hector is the one who discovered

3 0
3 years ago
-1/2 (30x + 16) Help Please!<br> A. -27x - 7<br> B. -15x - 8<br> C. -18x - 9
Lady_Fox [76]

Answer:

A  -(27x + 7)

B -(15x + 8 )

C -9(2x + 1 )

Step-by-step explanation:

-1/2 (30x + 16) = -15x-8

6 0
3 years ago
A particle moves along the x-axis so that at time t≥0t\ge 0t≥0 its position is given by x(t)=−t3+6t2−9t+42.x(t)=-t^3+6t^2-9t+42.
riadik2000 [5.3K]

Answer: 4 units

Step-by-step explanation:

The given position function: x(t)=-t^3+6t^2-9t+42., where t≥0.

To determine:  Total distance traveled by the particle from 0≤ t ≤ 4.0.

At t=0,

x(0)=-(0)^3+6(0)^2-9(0)+42=42\\

At, t=4,

x(4)=-(4)^3+6(4)^2-9(4)+42\\\\=-64+6(16)-36+42=38

Total distance traveled by the particle from 0≤ t ≤ 4.0 = |42-38| units

= 4 units

Hence, the distance traveled by the particle from 0≤t≤4.0 is 4 units.

4 0
3 years ago
Kristina walks 7 1/2 miles in 5 hours. At this rate, how many miles can Kristina walk in 9 hours
puteri [66]

Answer:

13.5

Step-by-step explanation:

7 1/2=7.5

7.5/5*9=13.5

4 0
3 years ago
360 miles driven on 12 gallons of fuel; 270 miles driven on 9 gallons of fuel. Use ratios or rates are equivalent. Explain your
densk [106]
Well you find the unit rate of both rates. So 360/12=30 and 270/9=30. So both the rate are 30 miles per gallon
 
8 0
3 years ago
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