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SCORPION-xisa [38]

3 years ago

11

Need help please on geometry

2 answers:

Nikitich [7]3 years ago

6 0

Area of a polygon = # sides * side^2 / 4 * tan (180 / # sides)Area of a polygon = 5 * 8^2 / 4 * tan (36)Area of a polygon =320 / 4* 0.72654Area of a polygon =320 / <span> <span> <span> 2.90616 </span> </span> </span> Area= <span> <span> <span> 110.1109367688
</span></span></span>
The middle answer is correct.
<span><span> </span> </span> Source:http://www.1728.org/polygon.htm

ELEN [110]3 years ago

5 0

40 square units i think

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What is the constant of proportionality,<br> ?

zalisa [80]

The constant value (often written k) relating amounts that rise or fall uniformly together. It is the ratio of the amounts y and x: k = y/x. Put another way: y = kx. Example: you are paid $20 an hour.
Hope this helps
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8 0

3 years ago

A frequency table of grades has five classes (A, B, C, D,F) with frequencies of 4, 10, 17, 6, and respectively. Using percentage

fiasKO [112]

We have the frequencies for each of the grades. We can estimate the number of students graded by adding all those frequencies. Let's call N the total number of grades:

$\begin{gathered} N=4+10+17+6+2 \\ N=39 \end{gathered}$

We have then a total number of grades of 39.

The corresponding relative frequency for a grade is the ratio of the frequency to the total number of "samples", 39 in this case.

Then, for grade A, the relative frequency (RF) will be:

$RF_A=\frac{4}{39}\approx0.10256\approx10.26\text{ \%}$

This will be the fraction of the total grades that are A. Represented as a percentage will be 10.26%, rounded to two decimal places.

Now, to complete the table we do the same for the other frequencies:

For grade B:

$RF_B=\frac{10}{39}\approx0.2564\approx25.64\text{ \%}$

For grade C:

$RF_C=\frac{17}{39}\approx0.4359\approx43.59\text{ \%}$

For grade D:

$RF_D=\frac{6}{39}\approx0.1538\approx15.38\text{ \%}$

For grade F:

$RF_D=\frac{2}{39}\approx0.0513\approx5.13\text{ \%}$

4 0

1 year ago

3x<11.75 solve for x please, with step on how you got to that answer!

seropon [69]

Answer:

See below

Step-by-step explanation:

3x < 11.75

11.75 / 3 = 3.92

x < 3.92

8 0

3 years ago

a box contains ten cards labeled q, r, s, t, u, v, w, x, y, and z. one card will be randomly chosen. what is the probability of

JulijaS [17]

Answer: t, and u

Step-by-step explanation:

6 0

3 years ago

Solution 2^2x+3-7(2^2x+1)+3=0 introduce Log

Andrej [43]

Answer:

$x = \frac{log\sqrt{-1/6}}{log2}$

Step-by-step explanation:

Given the expression

$2^{2x}+3-7(2^{2x}+1)+3=0$

Let $P=2^x$

Substituting into the expression, we will have:

$P^2+3-7(P^2+1)+3=0\\Expand\\P^2+3-7P^2-7+3=0\\-6P^2-1=0\\6P^2=-1\\p^2=-1/6\\P=\sqrt{-1/6}$

Since:

$P=2^x\\2^x=\sqrt{-1/6}\\xlog2=log(\sqrt{-1/6}) \\x = \frac{log\sqrt{-1/6}}{log2}$

7 0

3 years ago