The graph shows the elements found in Earth’s crust. What fraction of earth’s crust is silicon

In a probability experiment, karen flipped a coin 76 times. the coin landed on heads 32 times. what percentage of the coin flips resulted in tails? round to the nearest percent. a. 58% b. 65% c. 42% d. 60%

How do you determine whether a relationship represented as as graph is linear or nonlinear

If the discriminant if a quadratic equation is 4 which statement describes the roots?