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1 year ago

f a rectangle is not a square, what is the greatest number of lines of symmetry that can be drawn?A. 1B. 0C. 2D. 3 or more

Mathematics

1 answer:

zhenek [66]1 year ago

7 0

If the rectangle is not a square, then the sides must not be equal.

Thus, the rectangle can be cut horizontally, vertically, and diagonally. Therefore, it must be option D, which is "3 or more".

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How many atoms are in 0.44 mol of zinc metal

Flauer [41]

Multiply the number of atoms in 1 mole by .44 so...2.7x10^23 atoms

6 0

3 years ago

a pine tree that is 140 feet tall is added to the sample. how will this outlier affect the shape of the box plot?

enot [183]

Answer:

D. The new box plot will be positively skewed.

Step-by-step explanation:

We have been given a box plot which represents the the heights (in feet) of a sample of pine trees.

We are asked to determine that affect of adding a pine tree that is 140 feet tall to the sample.

We can see from our box plot that the tallest pine tree is 75 feet and 140 is approximately 2 times greater than 75.

After adding the a tree that is 140 feet tall, the maximum height will be 140 and our right whisker will be at point 140.

Since we know that for a positive skewed data, the tail of the distribution is longer on the right hand side.

As 140 is a extreme positive outlier for our given data set, therefore, after adding a tree that is 140 feet tall our box plot will be positively skewed and option D is the correct choice.

4 0

3 years ago

Read 2 more answers

What is the value of |C| in this matrix

damaskus [11]

Answer:

-12

Step-by-step explanation:

required value is det(C)

detC = (-6×4)-(6×-2)

so |C| = -24+12

=-12

6 0

3 years ago

If the triangles angles has the degrees of 100°and 43° what would be the next angle?

ohaa [14]

Answer:

Step-by-step explanation:

Since all the angles of triangle add up to 180 degrees,

Missing angle +100 +43=180.

Let the missing angle be 'x'.

Then, x + 100 +43 =180

or, x + 143 = 180

or, x = 180 - 143 = 37 degrees

So, the next angle is 37 degrees

5 0

3 years ago

Can y’all do 1-2 I’ll give brainliest !!!

Svet_ta [14]

One to one or injective means that each x in the domain maps to a unique y, i.e. the function preserves distinction.

y=(x-1)/(3x+3) is one to one. We can solve for x:

3xy + 3y = x - 1

3y + 1 = x - 3xy = x(1-3y)

x = (3y+1)/(1-3y)

That proves it's one-to-one; for each y we get one x.

$y=\sqrt{5x+9}$

That's also one to one,

$y^2 = 5x+9$

$x = \frac 1 5 (y^2 - 9)$

That's the proof.

$f(x)=\dfrac{7}{4x^2}$

That's Not one-to-one

because f(-x)=f(x). We only need a single counterexample; f(1)=7/4, f(-1)=7/4

$f(x) = \frac 1 2 x^3$

That's one-to-one, textbook case

$f(x)=3x^4 + 7x^3$

That's not one-to-one because the fourth power dominates so this will be sort of parabola-ish, repeating the same big positive values for a negative and positive x.

--------------

$y = f(x) = \sqrt[3]{x-2} + 8$

$y - 8 = \sqrt[3]{x-2}$

$(y-8)^3 = x-2$

$x = (y - 8)^3 + 2$

$f^{-1}(x) =(x - 8)^3 + 2$

First choice

8 0

4 years ago