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ikadub [295]
4 years ago
14

4) Find the center and radius of the circle.x2+ y2 – 81 – 2y=-16​

Mathematics
1 answer:
liq [111]4 years ago
6 0

Answer:Center: (0,1)

Radius: √66

Step-by-step explanation:

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Alina is able to swim at a rate of about 2.5 miles per hour. Talia is able to swim at a rate of 1.8 meters per second. Which sta
bonufazy [111]

Answer:

1 mile = 1,609 meters is the key to converting the rates of the two swimmers

Step-by-step explanation:

there are 60 seconds in a minute and 60 minutes in an hour

so 1.8 meters/sec x 60 sec/min x 60 min/hr = 6480 meters/hr

now we convert meters to miles

6480 meters/1 hr x 1 mile/1609 meters = roughly 4 miles/hr (4.027)

or we can convert the other rate to meters/sec

2.5 mi/hr x 1hr/60 min x 1min/60 sec = 0.00069444 mi/sec

then convert miles to meters

0.00069444 mi/sec x 1609meters/ 1mi = roughly 1.1 meters/sec (1.117)

5 0
4 years ago
Can someone help me with this math question. ​
Veronika [31]

Answer:

which math question

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Step-by-step explanation:

7 0
4 years ago
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The weights of five grapefruits are 7.47 ounces, 7.23 ounces, 6.46 ounces, 7.48 ounces, and 6.81 ounces. using the clustering es
satela [25.4K]

Answer:

35.45

Step-by-step explanation:

6 0
3 years ago
Jenny gave her brother 4 stickers what fraction does she have left
coldgirl [10]
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3 years ago
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Item 9 Find the annual interest rate. I=$562.50, P=$1500, t=5 yearsI=$562.50, P=$1500, t=5 years The annual interest rate is %.
Anton [14]
Hi there :-)
The formula of the simple interest is
I=prt
your question ask to find r which is interest rate you do that by dividing each side by (pt) to get
R=I÷pt
Now solve to get the interest rate
R=562.5÷(1,500×5)
R=0.075×100 multiply by 100 to get it as percentage
R=7.5%

Hope it helps:-)

4 0
3 years ago
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