Decide whether each equation is true for all, one, or no values of x. 1. 2x +8= -3.5x + 19
2. 9(x - 2) = 7x +5
3. 3(3x + 2) - 2x = 7x +6

"standard form:

3x2 + 14x − 10 = 0

solutions based on quadratic formula:

x1   = −14 − √ 142 − 4×3×(−10) /   2×3   = −14 − 2 × √ 79 /   6   ≈ −5.296

x2   = −14 + √ 142 − 4×3×(−10) /   2×3   = −14 + 2 × √ 79 /   6   ≈ 0.629

the answer is b.

64

step-by-step explanation:

c=2πr=2·π·8≈64

really your just stupid if you don't know this

step-by-step explanation: