The sides of a regular heptagonare equal. If the length of each side is expressed as 4.2H + 2, what is the perimeter of the heptagon in terms of H.
What will be an ideal response?
29.4H + 14
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_____________ braid hoses are used for petroleum base hydraulic and fuel oils at low pressures.
Fill in the blank(s) with the appropriate word(s).
A number of essential steps in an IPM program ________
a. provide identification of pests and natural enemies b. determine the injury level or potential size of the pest population c. determine the action or threshold level at which some pest controlling methods must be employed d. evaluate the greatest success with control and plan for future action e. all of the above
Which of the following control valves cannot provide for variable positions over a range of 0% to 100%?
A) Pneumatic-assisted valve B) Motor driven value C) Proportional valve D) Solenoid valve
?What is the best API service classification for automotive engine oil?
What will be an ideal response?