3 years ago

To which rational number subset(s) does the following number belong?

Mathematics

1 answer:

balu736 [363]3 years ago

7 0

Answer:

Step-by-step explanation:

idk

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a parallelogram has side lenghts 20 cm and 25 cm. the diagonal opposite the obtuse angle measures 38 cm. what is the measure of

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Step-by-step explanation:

1. draw the parallelogram with side 20cm and 25cm respectively and also the diagonal as well.

2.Clearly it forms a triangle in the parallelogram with three known lengths of side.

3.Using the cosine rule : c^2=b^2+c^2 -2bc cos c to find the obtuse angle.

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3 years ago

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A catering service offers lasagna and chicken Parmesan. Each pan serves 24 people. Right in equation to represent the number of

never [62]

P=24x (x= people) (or 24x=P)

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Write an equation that is perpendicular to x-3y=2 and contains the point (2,4)

Kisachek [45]

perp to x-3y=2 thru (2,4)

For perpendicular we swap the coefficients on x and y, negating one

3x + y = some constant

We get the constant in the obvious way from the point

3x + y = 3(2) + 4 = 6 + 4 = 10

Answer: 3x + y = 10

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3 years ago

(-57)-(+12) <br>find the difference

Airida [17]

Answer:

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Step-by-step explanation:

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Andrea and Ashley are middle distance runner's for the schools traffic and FaceTime in the 500 m race are approximately normally

swat32

Answer:

0.006 is the probability that the record will be broken in next year.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 62 seconds

Standard Deviation, σ = 0.8 seconds

We are given that the distribution of face time is a bell shaped distribution that is a normal distribution.

Formula:

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

The record will be broken if the time is less than 60 seconds.

P(time is less than 60 seconds)

P(x < 60)

$P( x < 60) = P( z < \displaystyle\frac{60 - 62}{0.8}) = P(z < -2.5)$

Calculation the value from standard normal z table, we have,

$P(x < 60) =0.006 = 0.6\%$

Thus, 0.006 is the probability that the record will be broken in next year.

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