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sweet [91]
4 years ago
10

On the first test, the mean is 70, the standard deviation is 5, and your score is 80. on the second test, the mean is 70, the st

andard deviation is 15, and your score is 85. compared to other students, how well did you do on the two tests?
Mathematics
1 answer:
Mekhanik [1.2K]4 years ago
4 0

85+88+87+80+x all divided by 5= 82

340+x=410

410-340=70

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<h3>What is the parabola?</h3>

It's the locus of a moving point that keeps the same distance between a stationary point and a specified line. The focus is a non-movable point, while the directrix is a non-movable line.

A parabola opening up or down has vertex (0,-4) and passes through (-12,14).

The equation of the parabola is given as

y = a(x - h)² + k

where (h, k) is the vertex of the parabola.

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Then the equation of the parabola will be

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More about the parabola link is given below.

brainly.com/question/8495504

#SPJ1

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