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alisha [4.7K]
3 years ago
6

At a local fitness center, members pay a $14 membership fee and $3 for each aerobics class. Nonmenbers pay $5 for each aerobics

class. For what humber or aerobics classes will the cost for members and nonmenbers be the same?
Mathematics
1 answer:
torisob [31]3 years ago
3 0
Fee for members: y = 14+ 3x
fee for nonmembers: y= 5x

to find the number of aerobics classes that will cost the same for 2, you set 2 equation equal to each other:
14 + 3x  = 5x \\ 14 = 2x \\ x = 7
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What’s the angle of cda
Anastaziya [24]

Answer:

∠ CDA = 32.3°

Step-by-step explanation:

See the given figure attached to this answer.

Draw perpendiculars from B and C on AD which is BE and CF.

Now, Δ ABE is a right triangle and AE² = AB² - BE² = 7.5² - 6² = 20.25

⇒ AE = 4.5 cm

Now, DF = AD - EF - AE = 24 - 10 - 4.5 = 9.5 cm {Since BC = EF}

And CF = BE = 6 cm.

Now, Δ CFD is a right triangle and  

\tan \beta  =\frac{CF}{FD} = \frac{6}{9.5}  = 0.6315 {Where β = ∠ CDA}

⇒ \beta  = \tan^{-1} (0.6315)=32.27 Degree.

So, ∠ CDA = 32.3° {Correct to one decimal place} (Answer)

8 0
3 years ago
What does i^16 equal and how do you get the answer​
svp [43]

Answer:

i^16 = 1

Step-by-step explanation:

i = √-1 = i

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i^4 = i^2 * i^2 = -1 * -1 = 1

the order keeps following......

i^16 = 1

since i^16 is same thing as i^4 * i^4

and we know i^4 = 1 so 1*1=1

7 0
3 years ago
Im really bad in math so could anybody help me
Anna71 [15]

Answer:

B , D , A ,C

Step-by-step explanation:

PEMDAS

7 0
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Read 2 more answers
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Stella [2.4K]
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