Answer:
kgm/s² or Newton
Step-by-step explanation:
According to Newton's second law of motion, F = ma
Force = mass × acceleration
Unit of mass is kilogram (kg)
Unit of acceleration is m/s²
According to the formula, we can say:
Unit of force = unit of mass × unit of acceleration
Unit of force = kg×m/s²
Unit of force = kgm/s² or Newton
Step-by-step explanation:
B. 20 only
hope it helps.
<h3>stay safe healthy and happy.</h3>
The equivalent expression of (q² − r²s) (q⁴ + q²r²s + r⁴s²) is q⁶ - r⁶s³
<h3>How to factor the expression?</h3>
The expression is given as:
(q² − r²s) (q⁴ + q²r²s + r⁴s²)
Expand the expression
(q² − r²s) (q⁴ + q²r²s + r⁴s²) = q²(q⁴ + q²r²s + r⁴s²) − r²s(q⁴ + q²r²s + r⁴s²)
Open the brackets
(q² − r²s) (q⁴ + q²r²s + r⁴s²) = q⁶ + q⁴r²s + q²r⁴s² -q⁴r²s - q²r⁴s² - r⁶s³
Evaluate the like terms
(q² − r²s) (q⁴ + q²r²s + r⁴s²) = q⁶ - r⁶s³
Hence, the equivalent expression of (q² − r²s) (q⁴ + q²r²s + r⁴s²) is q⁶ - r⁶s³
Read more about expressions at:
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<h3>Complete question</h3>
Factor the expression. (q² − r²s) (q⁴ + q²r²s + r⁴s²)
Answer:
Step-by-step explanation:
Total Students = 20 + 18 = 38 students
For boys percentage = 20/38 * 100
Boys percentage = 52.6%
For girls percentage = 18/38 * 100
Girls percentage = 47.3%
Pi is the ratio of the area of a circle to its diameter.