The range of usual values of distribution is (30 to 70). if the mean of the distribution is 50, what is its deviations?

what do u need to know

step-by-step explanation:

there is nothing below so i cannot

step-by-step explanation:

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step-by-step explanation:

ever thing time 1 is a multiply by 1 it get  

"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