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3 years ago

PLEASE..EXPERT IN MATH

Mathematics

1 answer:

Irina-Kira [14]3 years ago

8 0

Answer:

x=3

Step-by-step explanation:

one property of a trapezoid and medians is the middle line is half of the bottom and top combined. so the equation would look like this

3x+2+4x+3/2=13.

7x+5/2=13

7x+5=26

x=3

hope this helps,

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A quadrilateral with no sides parallel and diagonals that are perpendicular

Drupady [299]

<h3>Answer: Quadrilateral</h3>

======================================================

Explanation:

Of your original given list, let's write down the parallelograms. They are:

Parallelogram
Rectangle
Rhombus
Square

So we cross those off the list since we want a quadrilateral with no sides parallel. A parallelogram, by definition, is a quadrilateral with both pairs of opposite sides that are parallel.

We can also rule out the trapezoids because a trapezoid is a four sided figure (quadrilateral) where we have exactly 1 pair of parallel sides, while the other sides are not parallel.

Lastly, we can rule out the kite because any kite has perpendicular diagonals.

The only thing left is quadrilateral. In my opinion this answer should be more specific and say "quadrilateral that isn't a parallelogram, a trapezoid, or a kite", but I think I see what your teacher was going for here.

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3 years ago

High school students across the nation compete in a financial capability challenge each year by taking a National Financial Capa

erica [24]

Using the normal distribution, it is found that a student has to score 0.6433 standard deviations above the mean to be publicly recognized.

<h3>Normal Probability Distribution</h3>

In a normal distribution with mean $\mu$ and standard deviation $\sigma$ , the z-score of a measure X is given by:

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

It measures how many standard deviations the measure is from the mean.

After finding the z-score, we look at the z-score table and find the p-value associated with this z-score, which is the percentile of X.

The top 26% of the scores are given by scores above the 74th percentile, which corresponds to Z = 0.6433, hence, a student has to score 0.6433 standard deviations above the mean to be publicly recognized.

More can be learned about the normal distribution at brainly.com/question/24663213

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2 years ago

Write two fractions where the LCD is 20

sesenic [268]

Two fractions where the LCD between them is 20 can be 7/20 and 20/40.

I chose these 2 fractions because 7/20 cannot be reduced anymore, but 15/40 can be reduced into 10/20.

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3 years ago

A glass marble has a diameter of 17 millimeters. What is the approximate volume of the marble? Use 3.14

OlgaM077 [116]

Answer:

v=2571.13667 mm^3

Step-by-step explanation:

A marble is a sphere, and the volume of a sphere can be found using:

$v=\frac{4}{3} \pi r^3$