What are the areas of all these triangles? I need help please? and if you could do explanations that would be great!!!

Step-by-step explanation:

8 times 6 = 48 (base times high = a rectangle). (A triangle takes half the space)

F. (6*8)/2 =24 square units

B. (2 * 3/2) / 2 = 3/2 = 1.5 square units

G. (4*3)/2 = 6 square units

H. (8/3 *2)/2 = 8/3 = 2.67 square units

step-by-step explanation:

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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