Type the correct answer in each box. Use numerals instead of words. Consider this quadratic equation.
X2 + 2x + 7 = 21
The number of positive solutions to this equation is
The approximate value of the greatest solution to the equation, rounded to the nearest hundredth, is
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Asilkworm winds its cocoon out of one long silk fiber. to make silk thread, 3 to 10 of these silk fibers are unwound from their cocoons and combined into aa single thread with a typical length of 300 yards. choose a reasonable number of silk fibers in a thread write an equation to find the total length of the silk fibersused in 300 yards of the thread

Describe the 2 algebraic methods you can use to find the zeros of the function f(t)=-16t^2+400.

If you prove that ∆wxz is congruent to ∆yzx, which general statement best describes what you have proved?