A patient is to be given a mixture of two drugs Xeniccilin and Yasprin. Each of these drugs causes the body temperature of the patient to change. When x milligrams of Xeniccilin and y milligrams of Yasprin are given the temperature of the patient is f(x, y) degrees farenheit. Suppose that initially the ptaient is given 30 mg of Xeniccilin and 20 mg of Yasprin and that this combination does not affect the patient's body temperature. (a) What is the practical significance of the facts that (30,20)=0.3 and (30,20)=−0.6? (b) If the dosage of Xeniccilin is increased by a small amount, 1.7 milligrams, how much should the dosage of Yasprin be changed in order that the patient's temperature does not change?

$4034.40

the perimeter of the field is the sum of the lengths of the four sides:

47 yd + 158 yd + 47 yd + 158 yd = 410 yd

the cost of 3 ft (1 yd) of fence is 3×$3.28 = $9.84.

so the cost of jake's wood perimeter fance is

(410 yd) × ($9.84 /yd) = $4034.40

step-by-step explanation: the answer for wha if rt is 10 centimeters long, and wha is st? it’s 6

region b will make the inequalities y < 2x + 1 and y > -x - 2 true ⇒ answer a

step-by-step explanation:

* lets study the graph and the inequality to solve the question

- the inequality y > -x - 2

∵ the form of the inequality is y > mx + c , m is the slope of the line

  and c is the y-intercept (the line intersect y-axis at point (0 , c)

∴ c = -2 that means the line intersect the y-axis at point (0 , -2)

∵ the sign of the inequality is >

∴ we shad the part over the line

  region a and b

- the inequality y < 2x + 1

∵ the form of the inequality is y > mx + c , m is the slope of the line

  and c is the y-intercept (the line intersect y-axis at point (0 , c)

∴ c = 1 that means the line intersect the y-axis at point (0 , 1)

∵ the sign of the inequality is <

∴ we shad the part under the line

  region b and c

∵ the common region between the two lines is region b

∴ region b will make the inequalities y < 2x + 1 and y > -x - 2 true