Evaluate the expression without a calculator. Hint: Change decimals to fractions.
E) 1
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Find the work done by F over the curve in the direction of increasing t.F = 6yi + 
j + (3x + 6z)k; C: r(t) = ti + t2j + tk, 0 ? t ? 2
A. W = 0
B. W = 34 + 
C. W = 34 + 20
D. W = 57 + 20
Decide whether or not the ordered pair is a solution of the system.(6, -5)3x = -23 - y2x = -27 - 3y
A. Yes B. No
Solve the problem.Consider the quadratic model h(t) = -16t2 + 40t + 50 for the height (in feet), h, of an object t seconds after the object has been projected straight up into the air. Find the maximum height attained by the object. How much time does it take to fall back to the ground? Assume that it takes the same time for going up and coming down.
A. maximum height = 75 ft; time to reach ground = 2.5 seconds B. maximum height = 50 ft; time to reach ground = 2.5 seconds C. maximum height = 75 ft; time to reach ground = 1.25 seconds D. maximum height = 50 ft; time to reach ground = 1.25 seconds
Identify the polynomial as a monomial, binomial, trinomial, or none of these. Give its degree.-17y4 - 1y3 - 9
A. Trinomial, degree 4 B. Trinomial, degree 7 C. Trinomial, degree 8 D. Binomial, degree 4