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Questions in Grade Middle-school

📝 Answered - What is formed when two atoms of bromine bond together? 1. a monatomic molecule 2. a diatomic molecule 3. a heterogeneous mixture 4. a homogeneous mixture Gold can be flattened into an extremely thin sheet. The malleability of gold is due to the 1. radioactive decay mode of the isotope Au-198 2. proton-to-neutron ratio in an atom of gold 3. nature of the bonds between gold atoms 4. reactivity of gold atoms

📝 Answered - Find the value of x in the equation: \[ 6 - 4x = 7x - 9x - 2 \]

📝 Answered - Solve the simultaneous equations: 1. \( 3x - 2y = 9 \) 2. \( 5x - 2y = 7 \)

📝 Answered - How do I solve [tex]x^2 - 8x + 16 = 25[/tex] using perfect factoring patterns?

📝 Answered - Find the minimum value of \(1 + 3(3 - x)^2\).

📝 Answered - What is the value of [tex]x^2 = 169[/tex]?

📝 Answered - Simplify the expression and write the answer in factored form: \[ 8a - 2b + 12a - 2a - 4b \]

📝 Answered - Find the selling price. Cost of a sled: $99.50 Markup: 95%

📝 Answered - Is this true or false? Volcanoes can cause rapid changes in Earth's surface.

📝 Answered - The population of a small country is 5,740,000. Express this number using scientific notation.