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Akimi4 [234]
2 years ago
10

A student pushes a box across the floor using 8w of power in 7 seconds how much work does the student do

Mathematics
1 answer:
Alexeev081 [22]2 years ago
6 0

Answer:

Workdone = 56 Joules

Step-by-step explanation:

Given the following data;

Power = 8 watt

Time = 7 seconds

To find the workdone;

The workdone by an object or body is given by the formula;

Workdone = power * time

Workdone = 8 * 7

Workdone = 56 Joules.

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2^3 times 2^3+= <br> what does this eqaul
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Answer:

36

Step-by-step explanation:

2x3 x 2x3 = 36

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6 Jenna bought n notebooks which cost 5 dollars each, and 3 pens which cost r dollars each. How much money did she spend?
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1. Which would be a more helpful for solving the system: adding the two equations or subtracting
ira [324]

Answer:

1) Subtracting one from the other

2) x = 0.375 and y = 0.125

Step-by-step explanation:

Equation 1 :

\frac{2x+1}{2y}=7\\\\

Equation 2:

\frac{6x-1}{2y}=5

To solve these equations by the Elimination method we multiply equation 1 with 6 and multiply equation 2 with 2 so now,

\frac{2x+1}{2y} =7\\\\2x+1=14y\\\\Multiplying\ Equation\ 1\  with\ 6\\\\12x+6=84y

Now for the second equation:

\frac{6x-1}{2y}=5\\\\6x-1=10y\\\\Multiplying\ equation\ 2\ with\ 2 \\\\12x-2=20y

Now subtracting equation 2 from equation 1

12x+6=84y\\\\12x-2=20y\\\\Subtracting\ leads\ to\\12x-12x+6-(-2)=84y-20y\\0+8=64y\\8=64y\\8/64=y\\0.125=y

now insert this value of y into any equation

lets insert it into equation 1

\frac{2x+1}{2y} =7\\\\2x+1=14y\\2x+1=14(0.125)\\2x+1=1.75\\2x=1.75-1\\2x=0.75\\x=0.75/2\\x-0.375

5 0
3 years ago
Find the difference
kati45 [8]

Answer:

\frac{x}{x+1}

Step-by-step explanation:

7 0
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