' 2.9% ' means ' 0.029 '
' of ' means ' times '
' 2.9% of 1,000 ' means ' 0.029 x 1,000 '
0.029 x 1,000 = <em>29</em>
Answer:
≠
Step-by-step explanation:
- 6,2 × 10² = 0 × t + ½ × (-9/8) × t² + 2582,91
- 6,2 × 100 = 0 + ½ × (-9/8) × t × t + 2582,91
- 620 = ½ × (-9/8) × t × t + 2582,91
- 620 = (-9/16) × t × t + 2582,91
- 620 = (-9/16 t²) + 2582,91
- 6,2 × 10² ≠ 0 × t + ½ × (-9/8) × t² + 2582,91
Conclusion:
6,2 × 10² ≠ 0 × t + ½ × (-9/8) × t² + 2582,91
Answer: n2 + 1
Step-by-step explanation: Make sure the 2 in the n is small. When a number is squared increased by 1 that means;
a number = a variable, I used n.
squared = In mathematics, a square is the result of multiplying a number by itself.
increased by 1, is just simply adding 1 to the squared number.
This is a system of equations. You can solve it by substitution or elimination. I'm going to use substitution x - 2y = -4.5; add 2y to each side x - 2y + 2y = -4.5 + 2y; simplify x = 2y - 4.5 2(2y - 4.5) + 3y = 12 4y - 9 + 3y = 12 7y - 9 = 12 7y - 9 + 9 = 12 + 9 7y = 21 y = 3 <--------first answer x - 2y = -4.5 x - 2(3) = -4.5 x - 6 = -4.5 x -6 + 6 = -4.5 + 6 x = 1.5 <--------second answer Check: 2(1.5) + 3(3) = 12? 3 + 9 = 12? 12 = 12; It checks 1.5 - 2(3) = -4.5? 1.5 - 6 = -4.5? -4.5 = -4.5; It checks x = 1.5 and y = 3 <-----------Final Answer
