We are given with the rate of change of the base, db/dt equal to 1 ft/ sec and the rate of change of the height of the triangle, dh/dt equal to 2 ft/sec. b is 10 ft and h is 70 ft. Area of triangle is equal to A= 0.5 bh The rate of change of the area is equal to dA/dt = 0.5 b dh/dt + 0.5 h db/dt. Substituting, dA= 0.5*10*2 + 0.5*70 * 1 equal to 45 ft2 / sec.
Answer:
X^2+3X-10
Step-x^2by-step explanation:
Answer:
4
Explanation:
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Answer:
The answer if B. Hope this helps.
Step-by-step explanation:
Answer:
12*15 + 4*15*1.5
180+90 = $270
Step-by-step explanation: