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svet-max [94.6K]
3 years ago
7

Write a cosine equation with period 8 and amplitude 2

Mathematics
1 answer:
forsale [732]3 years ago
8 0
Standard Equation for trig function: y = A cos (B (x - H))+ K
*Here, we are just dealing with A (amplitude) and B (period)
Period = 2π/ b

8 = 2π/ b
Solve for b: 2π/8 or π/4

Equation: y = 2 cos (π/4 (x))
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Please help me with #16 I am really bad at doing fractions
emmasim [6.3K]
To see if it's a right triangle we need to determine if a²+b²=c²
(\frac{3}{20})² + (\frac{1}{5})² = \frac{1}{4}
\frac{9}{400} + \frac{1}{25} = \frac{1}{16}
\frac{9}{400} + \frac{16}{400} = \frac{25}{400}
\frac{25}{400} = \frac{25}{400}

So it is a right triangle
3 0
3 years ago
What is the area of the rectangle on the right?
defon
A = length x width

So, this would be 4(3)

(I believe that would be it anyway …) ‍♀️
4 0
3 years ago
Read 2 more answers
Rearrange the equation so b is the independent variable 4a+b=−52
Andrej [43]

Answer:

b=-4a-52 or -b=4a+52

Step-by-step explanation:

because you can subtract 4a to the other side or you can subtract 52 to the other side then subtract b to get the second equation.

hope this helps :)

8 0
3 years ago
Read 2 more answers
At the Beltway Outlet store , you buy x computer games for $13 each and a magazine for $4. Write an expression in simplest form
Rzqust [24]
13g + 4m = D

g=number of computer games
m=number of magazines
D=$ spent
6 0
3 years ago
Find the 23rd term of the sequence: 77,65,53,41
GREYUIT [131]

Answer:

The 23rd term is -187

Step-by-step explanation:

U₂₃=??, a=77, d=-12, n=23

U₂₃=a+(n-1)d

U₂₃=77+(23-1)(-12)

U₂₃=77+22(-12)

U₂₃=-187

U₂₃=-187

∴U₂₃=-187

6 0
3 years ago
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