explain formal demography?​

Sean plated an unknown metal onto his silver ring which initially weighed 1.4 g. He constructs an electrolytic cell using his ring as one of the electrodes. After running the cell, 0.022 moles of the unknown metal was plated onto his ring and the mass of the ring increased to 3.137 g. What is the atomic weight of the unknown metal in g/mol Help me please Find the slope of the line containing the points (2, 7) and (-5, -4). A car travels 12 km in 15 minutes.Work out the average speed of the car in km/h. Please help me, asap What is the midpoint of the segment shown below (1, 2) and (1, -5) change 7/8 as a fraction in simplest form A, 3-2x=3(x+4)-x-1B, 5x(x-1)-4(x-1)=0 Who sets the amount or rate of real estate commissions? I need help with this ASAP What makes a good scientific question??? Plsss help! I will give brainliest! :) Which of the following is true about the quotient -2/0? A. The quotient is equal to -2. B. The quotient is undefined because the denominator is zero. C. The quotient is undefined because the numerator is negative. D. The quotient is equal to 0. If a quadratic equation is written in intercept form, y = (x-3)(x+5), then vertex is at... A 0.2 oz. bullet leaves the muzzle of a rifle with a speed of 1420 ft/s. If the length of the barrel is 24 inches, what is the magnitude of the force acting on the bullet while it travels down the barrel five reasons why daisy is not at fault A card is drawn from a well shuffled deck of 52 cards what is the probability of drawing an ace or a six Which is the first computer brought in nepal for the census of 2028 B.S A car dealership is advertising a car for $16,299.99. If the sales tax rate is 6.5 percent, whatis the total tax paid for the car?A. S993 34B. $1.000.00CS1.059 50DS1.359.19 name the social issue that you have choosen and motivate why From the observation deck of a skyscraper, Isabella measures a 67 angle of depression to a ship in the harbor below. If the observation deck is 824 feet high, what is the horizontal distance from the base of the skyscraper out to the ship? Round your answer to the nearest tenth of a foot if necessary.