3 years ago

How many real solutions does a quadratic equation have if its discriminant is zero?

Mathematics

1 answer:

Flura [38]3 years ago

8 0

It is one answer with multiplicity 2

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Assume that thermometer readings are normally distributed with a mean of degrees and a standard deviation of 1.00degrees C. A th

Andrew [12]

Answer:

0.2684 is the probability that the temperature reading is between 0.50 and 1.75.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 0 degrees

Standard Deviation, σ = 1 degrees

We are given that the distribution of thermometer readings is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

P(Between 0.50 degrees and 1.75 degrees)

$P(0.50 \leq x \leq 1.75)\\\\ = P(\displaystyle\frac{0.50 - 0}{1} \leq z \leq \displaystyle\frac{1.75-0}{1})\\\\ = P(0.50 \leq z \leq 1.75)\\= P(z \leq 1.75) - P(z < 0.50)\\= 0.9599 - 0.6915 = 0.2684 = 26.84\%$

0.2684 is the probability that the temperature reading is between 0.50 and 1.75.

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3 years ago

For every team competing in a robotics competition, there are 4 students. How many students are on 3 teams?

givi [52]

Answer:

<em>There are 12 students.</em>

Step-by-step explanation:

This is because there are 4 students per team, and there is 3 teams.

So...

3 * 4 = 12 students

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3 years ago

What is the value of x in the equation<br> 7/8x+3/4=-6?

dedylja [7]

Answer:

x = -54/7

Step-by-step explanation:

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gogolik [260]

SAS mmmmmmmmmmmmmmmmmmm

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a line in the Cartesian plane passes through the points (1,3) and (5,4) what is the slope of the line?

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The slope of the line is 3

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