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expeople1 [14]
3 years ago
6

Help fast please!!!!

Mathematics
1 answer:
Deffense [45]3 years ago
3 0

Answer:

OK this is easy the answer is r=2.4

Step-by-step explanation:

so what you would do is simply add 3.1 and 1.7to get 4.8

then you would divide 4.8 by 2 and get r=2.4

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Emma is helping her mom set up tables for a class party. There are 179 people coming to the party. If only 8 people can sit at e
Arturiano [62]

Answer: 22

Step-by-step explanation:

8 0
3 years ago
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An 8-sided die is formed when two square pyramids are attached by their bases. The perimeter of the base shape is 6 centimeters.
lawyer [7]

Answer:

7.5cm²

Complete question:What is the surface area of the 8-sided figure?

Step-by-step explanation:

Consider the half of the 8-sided die i.e the pyramid ABCDE:

As the base is 6 of the perimeter, so each side of the base is 6/4=3/2

Now, the distance between the tallest points is 2 cm, so the height of Pyramid ABCDE is 1 cm.

Considering the right triangle EOM:

EO=1, OM= 3/4 (it is half of AB=3/2) and EM is the hypothenuse, so by the pythagorean theorem length of EM is 

\sqrt{1+ ( \frac{3}{4} )^{2} }=  \sqrt{1+ \frac{9}{16} }= \sqrt{ \frac{25}{16} }= \frac{5}{4}   (cm)

5. So side EBC has area  

\frac{1}{2}BC*EM=  \frac{1}{2}* \frac{3}{2}* \frac{5}{4}= \frac{15}{16}

6. The total area is 8*Area(EBC)=8* \frac{15}{16}= \frac{15}{2}=7.5 ( cm^{2} )

3 0
3 years ago
A classic counting problem is to determine the number of different ways that the letters of "occasionally" can be arranged. find
irina [24]

The word has 12 letters in total, distributed as follows:

2 o's
2 c's
2 a's
1 s
1 i
1 n
2 l's
1 y.

There are 12!=12\cdot 11\cdot ... \cdot 3\cdot 2 permutations of 12 objects. Nevertheless, since we have repeating letters, swapping them would still return the same words.

So, the new total is

\frac{12!}{2!2!2!2!} = 29937600

6 0
4 years ago
Read 2 more answers
If P (-3,2$ is reflected over the x-axis, then p
padilas [110]
Reflecting a point on the x axis is the same as performing the following transformation:
 T -> (x, -y)
 Applying the transformation we have
 P (-3.2) ---> (x, -y) ----> p (-3, -2)
 Therefore, the new point is
 p (-3, -2)
 answer
 p (-3, -2)
8 0
3 years ago
Hey can you please help me posted picture of question
MAXImum [283]
Answer:
The solutions of the equation are:
4/3 and 5/8

Explanation:
To get the solution of the equation, we can either solve it algebraically or graphically.

1- algebraic solution:
The general form of the quadratic equation is:
ax² + bx + c = 0
The given equation is:
24x² - 47x + 20 = 0
By comparison, we can find that:
a = 24
b = -47
c = 20

Now, to get the roots, we will use the quadratic equation shown in the attached image.

Substituting in the equation, we would find that:
either x = \frac{-(-47) +  \sqrt{(-47)^2-4(24)(20)} }{2(24)} =  \frac{4}{3}
or x = \frac{-(-47) - \sqrt{(-47)^2-4(24)(20)} }{2(24)} = \frac{5}{8}

2- graphical solution:
To get the solution means to get the values of the x-intercepts.
Graphing the function (see attached image), we would find that the solutions are:
0.625 which is equivalent to 5/8 
and 1.3333 which is equivalent to 4/3

Hope this helps :)

3 0
3 years ago
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