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3 years ago

How many shapes are in the world

2 answers:

7 0

There are more than you think ;) There is no limit to shapes, everything comes in shapes and sizes. For example, A computer has soft edges and it is rectangular. Peole can make up shapes if they want to, But more the merrier!

Montano1993 [528]3 years ago

3 0

There are an infinite number of shapes, because a shape can have any number of sides. This is where we get into our laws of fractals. A fractal is a shape with an infinite perimeter and area, meaning that every level of infinity is another shape, but can be beat by another shape. However, this is all philosophical math and goes way beyond the context of your question.

To keep it short and simple, there are an infinite number of shapes in the world.

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Please answer this correctly

Blizzard [7]

Answer:

Commutative Property

Step-by-step explanation:

7 0

3 years ago

5. Place the following numbers in order from least to greatest. √16, 6, √19, 5, √37

Mama L [17]

A is correct because it’s the only answer that starts with five

5 0

3 years ago

Read 2 more answers

Evaluate exactly without the use of a calculator (remember to rationalize any denominators). a.(cos 60o)(sin 270o) + tan 225o b.

Rom4ik [11]

Given:

The trigonometric expressions are given as,

$\begin{gathered} a)\text{ }(\cos 60\degree)(\sin 270\degree)+\tan 225\degree \\ b)-\tan 240\degree+(cos45\degree)(\sec 135\degree) \end{gathered}$

Explanation:

The given expression can be rewritten as,

$=(\cos 60\degree)(\sin (360\degree-90\degree))+\tan (270\degree-45\degree)\text{ . . . . .(1)}$

Since, from the trigonometric ratios,

$\begin{gathered} \sin (360\degree-90\degree)=-\sin 90\degree \\ \tan (270\degree-45\degree)=\cot 45\degree \end{gathered}$

On plugging the obtained ratios in equation (1),

$=(\cos 60\degree)(-\sin 90\degree)+\cot 45$

Substitute the trigonometric values in the above equation.

$\begin{gathered} =\frac{1}{2}(-1)+1 \\ =-\frac{1}{2}+1 \\ =\frac{1}{2} \end{gathered}$

Hence, the exact value of the expression is 1/2.

The given expression can be rewritten as,

$=-\tan (270\degree-30\degree)+(\cos 45\degree)(\sec (90\degree+45\degree))\text{ . . . ..(2)}$

Since, from the trigonometric ratios,

$\begin{gathered} \tan (270\degree-30\degree)=\cot 30\degree \\ \sec (90\degree+45\degree)=-\csc 45\degree \end{gathered}$

On plugging the obtained ratios in equation (2),

$=-\cot 30\degree+(\cos 45\degree)(-\csc 45)$

Substitute the trigonometric values in the above equation.

$\begin{gathered} =-\sqrt[]{3}+\frac{1}{\sqrt[]{2}}(-\sqrt[]{2}) \\ =-\sqrt[]{3}-1 \end{gathered}$

Hence, the exact value of the expression is -√3-1.

7 0

2 years ago

How do i do the equation 5y - 3/5 =4/5

tatuchka [14]

5y - $\frac{3}{5}$ = $\frac{4}{5}$ Add $\frac{3}{5}$ to both sides
5y = $\frac{7}{5}$ Divide both sides by 5 ( $\frac{7}{5}$ x <span> $\frac{5}{1}$ )
y = </span> $\frac{35}{5}$ Simplify
y = 7

7 0

3 years ago

In professor Johnson's literature class there are 267 students. At a random check Prof.Johnson notices that 22 students among 59

s2008m [1.1K]

We have a class of a total of 267 students.

The professor has a sample of 59 students, where 22 of them did not complete their essays.

This equals a proportion of:

$p=\frac{22}{59}\approx0.373$

If this sample is representative of the class, we can use this proportion to estimate how many students did not complete the essay.

To do that we multiply the total number of students by the proportion we have just calculated:

$X=N\cdot p=267\cdot0.373\approx99.59\approx100$

Answer: it can be estimated that approximately 100 students did not finish their essay.

4 0

1 year ago