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irga5000 [103]
3 years ago
10

Find the area of the regular 15-gon with radius 8 mm.

Mathematics
1 answer:
GalinKa [24]3 years ago
8 0
A=(1/2)(r^2)(sin[360/n])(n)
A=(1/2)(8^2)(sin[360/15])(15)
A=(1/2)(64)(sin[24°])(15)
A=(1/2)(64)(0.40673664)(15)
A= 195.2335872
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The table of values shown below represents a linear function. Which of these points could also be an ordered pair in the table,
BlackZzzverrR [31]

Answer:

(18, 27), because the rate of change of the function is 3

Step-by-step explanation:

6 0
3 years ago
PLEASE FOLLOW THE DIRECTIONS AND SHOW YOUR WORK. IM OFFERING 15PTS (Way more than its worth) AND BRAINLIEST ANSWER. PLEASE HELP
Alex
I'll take this challenge since I'm not feeling lazy for once....   x would represent Gavin and y would represent Seiji.  

a.  x+y=425, x-y=25   




b.   I will solve your system using substitution.    
x+y-425, x-y=25  
<span>Step 1: Solve </span>x+y=425 for x
x+y+-y=425+-y (add -y for both sides)
x=-y+425
<span>Step 2: substitute </span>-y+425 for x in x+b=25
x+y=25
<span></span>-y+425-y=25
-2y+425=25 (simplify both sides of the equation)
-2y+425+-425=25+-425 (add -425 to both sides)<span>
</span> -2y=-400
\frac{-2y}{-2} =  \frac{-400}{-2}
y=200
step 3: substitute 200 for y in x=-y+425
x=-y+425
x=-200+425&#10;
x=225
x=225, y= 200




c.   Already answered with the picture that is attached.



d.   Gavin earned 225 dollars while Seiji earned 200 dollars.  

3 0
4 years ago
Students get two grades for a test in an introductory psychology course: a letter grade, and a numerical equivalent (weighted va
vlabodo [156]

Answer:

Average grade for this test = 1.85

Step-by-step explanation:

Given that number of students receiving respective grade scores are : 11, 18, 52, 13, 6

Then total number of students = 11 + 18 + 52 + 13 + 6 = 100

Sum score obtained by total students

= 11F + 18D + 52C + 13B + 6A

= 11(0) + 18(1) + 52(2) + 13(3) + 6(4)

= 0 + 18 + 104 + 39 + 24

= 185


Now average grade for this test is given by 185/100 = 1.85

Hence final answer is 1.85.

3 0
4 years ago
Read 2 more answers
Last month, Jenny's science test score was 65. This month, her science test score is 91.
neonofarm [45]
The answer is C, 140%.
6 0
4 years ago
Read 2 more answers
What is y+5x=6; x= -1,0,1
ExtremeBDS [4]
Y + 5x = 6

y + 5(-1) = 6
y + (-5) = 6
y - 5 = 6
y - 5 (+5) = 6 (+5)
y = 11
when x = - 1, y = 11

y + 5(0) = 6
y + 0 = 6
y + 0 (-0) = 6 (-0)
y = 6
when x = 0, y = 6

y + 5(1) = 6
y + 5 = 6
y + 5 (-5) = 6 (-5)
y = 1
when x = 1, y = 1


hope this helps
3 0
3 years ago
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