4 x² + 6 = 40
4 x² + 6 - 6 = 40 - 6
4 x² = 34
x² = 34 : 4
x² = 8.5
x = √ (8.5)
x 1 = 2.9154759 ≈ 2.92 ( to the nearest hundredth )
x 2 ≈ - 2.92
Answer:The solutions are approximately 2.92 and - 2.92.
Answer:
option 3
Step-by-step explanation:
divide the diameter by 2 to get the radius.
pi×r^2
3.14×42^2=5538.96 km^2
Answer:
x = 8/3 or 2 2/3
Step-by-step explanation:
if angles A and B are complementary then their sum is 90 degrees
we can write the following equation to find 'x':
3x + 4 = 6x - 4
subtract '3x' from each side:
4 = 3x - 4
add 4 to each side:
8 = 3x
divide each side by 3:
8/3 = x
or x = 2 2/3
