4. The amount of temperature rise in a concrete mass depends upon numerous variables including cement fineness and composition, ambient temperatures, mixture proportions, heat transfer from the concrete to its surroundings, and other factors. Heat gain of hydrating cement in concrete can be reduced by adding which of the following as a partial replacement for portland cement in the concrete mixture? Chemical admixtures - Pozzolans - Slags Any of a, b, or c above

Suppose the \( f(x)=x^{2}+4 x-1 \) and \( g(x)=2 x-3 \). Find indicated value: \( \quad(g \circ f)(2)= \)

16e. EJERCICIO 16 Hallar la suma de: 1. sa \( +2 b-c ; 2 a+3 b+c \).

Divide the polynomials. Your answer should be a polynomial. \( \frac{2 x^{3}-5 x^{2}+x}{x}=\square \)

Simplify the expressions. Enter your answers in exponential form. a. \( \frac{s^{4}}{s^{6}}=\square \) b. \( \frac{8^{6}}{8^{8}}=\square \) c. \( \frac{t^{4}}{t^{5}}=\square \)

Solve the inequality (algebraically). \( x(x+3)(5-x) \geq 0 \) A. \( [-3,0] \cup[5, \infty) \) B. \( [0,5] \) C. \( (-\infty,-3] \cup[0,5] \) D. \( (-\infty,-3) \cup(0,5) \) An answer without workstown is only worth ponit. Show vour work on vour paper. OA OB OC