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Questions in Grade Middle-school

[Free] A secretary can type 56 words per minute. How much time will she need to type a 4200-word report? A. 7 hours 30 minutes B. 1 hour 4 minutes C. 1 hour 28 minutes D. 1 hour 15 minutes

[Free] Which melon has a greater mass: one that is 4 kilograms or one that is 4,100 grams?

[Free] Why do scientists find it hard to trace the origin of fungi?

[Free] Graph the system of inequalities: \[ y < 2x + 2 \] \[ y \geq -x - 1 \]

[Free] Why did the Kingdom of Ghana become prosperous and powerful?

[Free] What is the value of the expression \(\frac{5 + (20 - 8)}{3} + 6\)?

[Free] Solve each equation by completing the square. If necessary, round to the nearest hundredth. 19. \( x^2 - 18x = 19 \) 20. \( 4a^2 + 8a - 20 = 0 \)

[Free] Multiply or divide, and then simplify the following expressions: 1. \(\frac{(x+1)^2}{x-5} \cdot \frac{x-3}{x+1}\) 2. \(\frac{3x+3}{2} \div \frac{4}{9x+9}\) 3. \(\frac{4a}{3a-3} \cdot \frac{3(a-1)}{16a}\) 4. \(\frac{x+2}{x-1} \div \frac{5x+10}{x-2}\)

[Free] What is 3.5 divided by 0.25?

[Free] What number is one-fourth of 360?