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boyakko [2]
3 years ago
7

Given f(x)=3x-5, find f(x-1)

Mathematics
1 answer:
marusya05 [52]3 years ago
6 0

Answer:

f(x - 1) = 3x - 8

Step-by-step explanation:

To find f(x - 1) substitute x = x - 1 into f(x), that is

f(x - 1) = 3(x - 1) - 5 = 3x - 3 - 5 = 3x - 8

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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.
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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} )

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3 years ago
I can understand the meaning (passive)<br>​
iVinArrow [24]

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Step-by-step explanation:

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Hello,
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What is the equivalent of 4 meters?
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It takes a printer 10 hours to print the class schedules for all of the students in a college. A faster printer can do the job i
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8 hours

Step-by-step explanation:

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