Jonah tore the angles off a large paper triangle. then he arranged the three paper angles with their points together so that there were no gaps and no overlaps. what kind of angle did jonah form? a. acute angle b. right angle c. obtuse angle d. straight angle

He is tearing the angles of a triangle and arranging all three angles in such a way that there is no gap and there is no overlap. so, the resulting angle is the sum of all three angles. As we know, the sum of angles of a triangle is 180°. So, the resulting angle or sum of three angles of triangle is 180° or Straight angle.

Hence option D is correct

x = ±sqrt(10)

step-by-step explanation:

5 - 2x² = -15

subtract 5 from each side

5-5 - 2x² = -15-5

-2x^2   = -20

divide by -2 on each side

-2x^2   /-2= -20/-2

x^2 =10

take the square root on each side

sqrt(x^2 )=±sqrt(10)

x = ±sqrt(10)

check:

5 - 2x² = -15

+sqrt(10)

5 - 2(sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15

-sqrt(10)

5 - 2(-sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15