When a calcium atom forms an ion, it loses two electrons. what is the electrical charge of the calcium ion? a. -2 b. -1 c. +1 d. +2

The parabola x= √y-9 opens: a.)up b.)down c.)right d.)left

For each polynomial, determine the degree and write the polynomial in descending order. a. –4x^2 – 12 + 11x^4 b. 2x^5 + 14 – 3x^4 + 7x + 3x^3

Right triangle xyz has a right angle at vertex y and a hypotenuse that measures 24 cm. angle zxy measures 70º. what is the length of line segment xy? round to the nearest tenth. 8.2 cm 8.7 cm 22.6 m 25.5 cm