Answer & Step-by-step explanation:
Mathematical Problem Example : 100 x 105
By commutative rule, a x b = b x a : 100 x 105 = 105 x 100 = 10500
By distributive rule, a x (b+c) = (a x b) + (a x c)
Breaking down 105, we get : 100 x 105 = 100 (100 + 5)
= (100 x 100) + (100 x 5) = 10000 + 500 = 10500
As solutions by both rules are same, algebra multiple ways to solve a mathematical problem have been hence proved.
We have:
- 49KN = 49 × 1000 = 49000N
- 1 foot² = 30² = 900 cm²
So: 49KN/foot² = 49000N/900 cm² = 54,5 N/cm²
P/s: 1 KN = 1000 N
ANSWER: 54,5 N/cm²
Ok done. Thank to me :>
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Answer:
b. 75
Step-by-step explanation:
a(n) = a1 + d(n-1)
a(n) = 8.5 + 3.5(n - 1)
a(20) = 8.5 + 3.5(20 - 1)
a(20) = 8.5 + 3.5(19)
a(20) = 8.5 + 66.5
a(20) = 75
