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raketka [301]
3 years ago
6

3. The equation of a circle is x^2+y^2-4x+2y-11=0 . What are the center and the radius of the circle? Show your work.

Mathematics
1 answer:
Charra [1.4K]3 years ago
7 0
Rewrite in standard form to find the center (h,k) and redius r.
center: (2,-1)
Radius:4
have a great day!!!
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If |a+3|=4 which describes all possible values of a? <br>only -7<br>only 1<br>-7 and 1<br>1 ot -7 ​
stiv31 [10]
-7 and 1
Because if you do -7 plus 3 which equals -4 and the absolute value of negative 4 is 4. And 1+3 is 4
4 0
4 years ago
Solve the logarithmic equation. Round your answers to the nearest hundredth. 6+in x=8
Masja [62]

Answer:

x=7.39

Step-by-step explanation:

we are given equation as

6+ln(x)=8

Since, we have to solve for x

so, we will isolate x on anyone side

Firstly, we will subtract both sides by 6

6+ln(x)-6=8-6

ln(x)=2

now, we can take exponent of e on both sides

e^{ln(x)}=e^2

now, we can use property of log

and we get

e^{ln(a)}=a

we can use it

x=e^2

So, solution is

x=7.39


8 0
3 years ago
Read 2 more answers
Pamelas age is two times jiris age. the sum of their ages is 15. what is jiris age
vaieri [72.5K]

Answer:

Pamela is 10 and Jiris is 5

Step-by-step explanation:

It says the sum of their ages is 15, and Pamela's age is 2 times Jiris's so if Jirus were 5 and Pamela 10 it sums out and thats your answer.

5+10=15      5x2=10

3 0
3 years ago
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Which fraction is between 0 and 1/2
faust18 [17]

The Fraction that is between 0 and 1/2 is 2/10

The fraction 1/2 can also be written as 5/10. If you were to make a number line, you would be able to see that 2/10 is between. Here, let me order them from least to greatest:

< - 0 - - 2/10- - - 1/2- - 7/10- 3/4 - 8/10 - >

As you can see, 2/10 is between 0 and 1/2 (5/10).

6 0
3 years ago
The population of a city has increased by 36% since it was last measured. If the current population is 71,400,what was the previ
arsen [322]

Answer:

52,500

Step-by-step explanation:

We can convert the word problem into an equation:

1.36x= 71,400

x represents the number of people in the previous population

We divide both sides by 1.36

x=52,500

The previous population was 52,500!

Hope this helps!

6 0
3 years ago
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