A construction worker needs to determine the volume of a sandpile in a construction yard, as shown. •A line along the surface of the sandpile from the ground to the top of the sandpile makes a 50° angle with the ground at point R.

•The length of the slant side of the sandpile, RT, from the ground to the top of the sandpile is 30 meters.​

a complex number is a number that can be expressed in the form a + bi, where a and b are real numbers, and i is a solution of the equation x2 = −1. because no real number satisfies this equation, i is called an imaginary number. has no real solution, since the square of a real number cannot be negative.

-13

step-by-step explanation:

f(x)=2x-5 for f(-4)

f(-4)   means let x=-4

f(-4) = 2(-4) -5

f(-4) =-8-5

      = -13

answer: $201

step-by-step explanation: to get the answer, you first get 3 nieces that he sold and multiply it by 67 and get $201, so he earned $201 selling his nieces.

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im not sure