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Dimas [21]
3 years ago
10

On Pennsylvania's interstate highway the speed limit is 65 mph. The minimum speed is 45 mph. Write a compound inequality that re

presents the speeds at which you may legally drive.​
Mathematics
1 answer:
qaws [65]3 years ago
6 0

Let x be the speed.

Maximum is 65 so x needs to be less than or equal to 65.

The minimum is 45, so x also has to be greater than or equal to 45

45 <= x => 65

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Step-by-step explanation:

Quadratic equation

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Engineers must consider the diameters of heads when designing helmets. The company researchers have determined that the populati
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1. The minimum head breadth that will fit the clientele is of 3.95-in.

2. The maximum head breadth that will fit the clientele is of 9.25-in.

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Problems of normal distributions can be solved using the z-score formula.

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1. What is the minimum head breadth that will fit the clientele?

The 0.8th percentile, which is X when Z has a p-value of 0.008, so X when Z = -2.41.

Z = \frac{X - \mu}{\sigma}

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X = 3.95

The minimum head breadth that will fit the clientele is of 3.95-in.

2. What is the maximum head breadth that will fit the clientele?

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Z = \frac{X - \mu}{\sigma}

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