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boyakko [2]
3 years ago
7

(Photo attached) Parametric Equations. Thank you for your help!

Mathematics
1 answer:
jenyasd209 [6]3 years ago
6 0

Step-by-step explanation:

cos^2(t)+sin^2(t)=1

4cos^2(t)/4 + 81sin^2(t)/81 =1

2^2(cos^2(t))/2^2 + 9^2(sin^2(t))/9^2=1

[2cos(t)]^2/2^2 +[ 9sin(t)]^2/9^2=1

since x^2/2^2 +y^2/9^2=1

X=2cos(t) ,y=9sin(t)

X(t)= 2cos(t) here r=2

y(t)=9sin(t)

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Mrs. Lee works 4y hours each day from Monday to Friday. She works (4y-4) hours on Saturday.
7nadin3 [17]

Answer:

24y-4

Step-by-step explanation:

4y*5=20y

20y+4y-4= 24y-4

5 0
2 years ago
PLEASE HELP!!! WILL AWARD BRAINLIEST!!! you work a part-time job earning 6.80/hr with tips that average 2.30/hr you work 20 hr/w
solmaris [256]
143.7  I believe since you take 6.80*20=136+46=2.3*20

136+46=182

182*7.65%=168.08

168.08*8.95%=153.04

153.04*6.1%=143.7
4 0
3 years ago
Read 2 more answers
Philip’s meal costs $12.82 at a local restaurant. The server did their job very well and Philip would like to leave a 20% tip. W
Elodia [21]

Answer:

$2.56

Step-by-step explanation:

If you multiply 12.82 by .20, you would get 2.564. Then you just round it up and the answer you get is $2.56. Hope this helps!

8 0
3 years ago
Darnell ran 550 yards in 3 minutes. At this rate, how many yards can he run in 6 minutes?​
Elan Coil [88]

Answer:

Darnell can run 1100 yards in 6 minutes

Step-by-step explanation:

There are 2 ways you can solve this

Method 1: You would have to divide 550 by 3 which you would get about 183, (the exact answer is very long so I recommend using a calculator). Then you multiply that by 6 to get 1100.

Method 2: This one would probably be easier. Since 3 x 2 is 6 then you can multiply 550 x 2 to get 1100.

I hope this helps!

4 0
3 years ago
Read 2 more answers
Please help lol, im on a math test
Sveta_85 [38]
I know for sure it’s not B or D so I believe it is A.
5 0
3 years ago
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