Use the quadratic equation x2+6x+9=0 to answer the questions.

a: what is the discriminant of the quadratic equation?

b: based on the discriminant, which statement about the number and type of solutions to the equation is correct?

select one answer choice for part a, and select one answer choice for part b.

b: the equation has one repeated real solution.
b: the equation has two real solutions.
a: −30
a: −25
a: 0
a: 25
b: the equation has one repeated real solution.

Which of the following values are in the range is the function graphed below? check all that applya.3b.1c.0d.-2e.5f.2a

Answer: d. 39 cmin the diagram, the approximate length of the minor arc de is 39 centimetres.step-by-step explanation: the formula for the length of an arc in a circle is as displayed below.let the length of the minor arc de = xx = 2( pi )r × angle of sector / 360°from this, we will substitute the values given from the problem into the formula to obtain the length of the minor arc de.x = 2( pi )r × angle of sector / 360°r = radius = 25cmpi as an approximate value = 3.14angle of sector = 120°x = 2( 3.14 )( 25 ) × 120° / 360°x = 157 × 1 / 4x = 39.25x = 39 ( rounded to the nearest whole number as an approximate value )