First, you would subtract 4.25 from 6.25 and that would be equal to 2.
Then, you would take 2.25z and subtract it from 3.5z and it would equal 1.25z.
Next, you would separate the z by dividing 1.25 on both sides. Z=1.6
Answer: B
There is only one solution.
Answer:(all negative) 14 13 12 11 10
Step-by-step explanation: sall good
Answer:
Step-by-step explanation:
1. Use of lubricants
Lubricants like oil and grease helps to decrease friction by forming a thin film in between different parts of the machine. This film covers up the scratches and bumps on the surfaces of different parts. This reduces interlocking between the two surfaces. Thus reducing the friction.
2. Use ball bearings
Two moving surfaces in a machine are attached by placing small steel balls or steel rollers in between them. This way, the moving parts avoid direct contact and the force of sliding friction turns into rolling friction. Rolling friction is less than sliding friction, in doing so reducing the friction.
3. Polishing
Polishing reduces the unevenness of a surface. This will reduce interlocking between the surfaces.
4. Streamlining
Streamlining is the process where you make a machine in a shape that avoids air and water resistance. This reduces friction because a streamlined object cuts through the water and air molecules.
Answer:
p must be less than 100
Step-by-step explanation:
Let
c ----> the cost in dollars to clean the stream
p ----> percent of the stream
we have
Remember that the cost cannot be a negative number
and
the denominator cannot be a zero
so
Solve for p
Multiply by -1
Adds 100 both sides
therefore
p must be less than 100
Answer:
12/5
Step-by-step explanation:
-3/2 ÷ -5/8 =
-3/2 x 8/-5 =
-24/-10 =
12/5
