You gave your friend a jar of marbles as a gift. She liked green marbles better than white ones so the jar has twice as many green marbles than white. The jar contains 210 marbles. Write an equation or system of equations to find out how many of each type of marble is in the jar.

Ariel is working at a meat packing plant for 5 nights a week. her regular wage is $11 an hour. she earns tine and a half for any overtime hours. this week she worked 9 hours of over time .how much will ariel earn for overtime this week ?

If m∠abc = 70°, what is m∠abd? justify your reasoning.  using the addition property of equality, 40 + 70 = 110, so m∠abd = 110°.  using the subtraction property of equality, 70 − 30 = 40, so m∠abd = 30°.  using the angle addition postulate, 40 + m∠abd = 70. so, m∠abd = 30° using the subtraction property of equality.  using the angle addition postulate, 40 + 70 = m∠abd. so, m∠abd = 110° using the addition property of equality.

Rewrite the following quadratic functions in intercept or factored form. show your work. y = 9 + 12x + 4x^2