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3 years ago

When solving a system of equations graphically, when would you need to estimate the solution? Explain

Mathematics

2 answers:

NikAS [45]3 years ago

9 0

Sample response:

Graphs in which both the x- and y-values for the intersection point are not integers need to be estimated because the lines do not intersect on a grid line where it is easy to read what the values are.

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SashulF [63]3 years ago

8 0

Answer:

To solve an equation means to find all the values that should satisfy the given statement. To solve an equation graphically, draw the graph for x and y of the given equation and notice where the curves cuts should be equal.

Step-by-step explanation:

Solving system of linear equations by using graph:

A system of linear equations contains atleast two equations.For example y=5x+2 and y=x.The solution of both equations can be denoted as a ordered pair.To solve the system of linear equations we have to plot the points in the graph for both equations in coordinate system must be same.The intersection of two straight lines is the solution(point) for the given system.

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The navy reports that the distribution of waist sizes among male sailors is approximately normal, with a mean of 32.6 inches and

Romashka-Z-Leto [24]

Using the normal distribution, it is found that:

a. A male sailor whose waist is 34.1 inches is at the 87.5th percentile.

b. 5.7% of male sailors requires custom uniform pants.

<h3>Normal Probability Distribution</h3>

The z-score of a measure X of a normally distributed variable with mean $\mu$ and standard deviation $\sigma$ is given by:

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

The z-score measures how many standard deviations the measure is above or below the mean.

Looking at the z-score table, the p-value associated with this z-score is found, which is the percentile of X.

The mean and the standard deviation are given, respectively, by:

$\mu = 32.6, \sigma = 1.3$

For item a, the percentile is the <u>p-value of Z when X = 34.1</u>, hence:

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

Z = (34.1 - 32.6)/1.3

Z = 1.15

Z = 1.15 has a p-value of 0.875.

Hence 87.5th percentile.

For item b, the proportion who does not require an special order is the <u>p-value of Z when X = 36 subtracted by the p-value of Z when X = 30,</u> hence:

X = 36:

Z = (36 - 32.6)/1.3

Z = 2.62

Z = 2.62 has a p-value of 0.996.

X = 30:

Z = (30 - 32.6)/1.3

Z = -2

Z = -2 has a p-value of 0.023.

0.996 - 0.023 = 0.943.

Hence the proportion who requires an special order is:

1 - 0.943 = 0.057.

5.7% of male sailors requires custom uniform pants.

More can be learned about the normal distribution at brainly.com/question/15181104

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2 years ago

What is the solution to the inequality below? w+4≤ -1

maxonik [38]

Answer:

w≤ -5

Step-by-step explanation:

hello :

w+4≤ -1

w+4-4≤ -1-7

w≤ -5

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3 years ago

What is 2+2<br><br> ???????????

SIZIF [17.4K]

Answer : 2+2= 4

Hope this helps :)

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3 years ago

AC is tangent to circle O at A. If m arc BY=24 , what is mYAC? (The figure is not drawn to scale.)

Svetradugi [14.3K]

It is given in the question that measurement of arc BY is 24 degree and AB is the diameter . Therefore measurement of arc BYA is 180 degree. Hence measurement of arc YA is

$=180-24=156 degree$

And angle YAC is double of angle YA . And since YA is 156 degree. So angle YAC is

$=\frac{1}{2} (156) = 78 degree$

And that's the required answer .

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4 years ago

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Carlos has 58 pencils what is the valueof the digit 5 in this number

aev [14]

Tens place or 50 is the value of the digit 5

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