Find all complex numbers z such that z^4 = -4. Note: All solutions should be expressed in the form a+bi, where a and b are real numbers.

Read the following two statements. then use the law of syllogism to draw a conclusion. if the tv is too loud, then it will give me a headache. if i have a headache, then i will have to rest.

Atemperature of 1.64◦f corresponds to answer in units of ◦c.

What is the arc length of the subtending arc for an angle of 72 degrees on a circle of radius 4? o a. 8a oc. 16 t d. 8