A necklace is being made with beads that are 0.75 cm in diameter each. The necklace is 30cm long. How many beads are needed?

"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

b is the correct answer

1) letter c.

2) 4 square root of 9

hope this

step-by-step explanation: