livigrace9004
09.01.2022 •
Mathematics
Determine the center of the circle from the equation.
x² -4x +4 +y² +6y +9 =4
A. (2,-3)
B. (0,-3)
C. (-2,3)
Solved
Show answers
More tips
- C Computers and Internet Where are passwords stored in Opera?...
- H Health and Medicine Simple and Effective: How to Get Rid of Cracked Heels...
- O Other How to Choose the Best Answer to Your Question on The Grand Question ?...
- L Leisure and Entertainment History of International Women s Day: When Did the Celebration of March 8th Begin?...
- S Style and Beauty Intimate Haircut: The Reasons, Popularity, and Risks...
- A Art and Culture When Will Eurovision 2011 Take Place?...
- S Style and Beauty How to Choose the Perfect Hair Straightener?...
- F Family and Home Why Having Pets at Home is Good for Your Health...
- H Health and Medicine How to perform artificial respiration?...
- H Health and Medicine 10 Tips for Avoiding Vitamin Deficiency...
Answers on questions: Mathematics
- M Mathematics An isosceles triangle is shown. Which two angles must be congruent? A. ∠V ≅ ∠W B. ∠V ≅ ∠X C. ∠W ≅ ∠X D. Cannot be determined...
- M Mathematics If measure 9 = 97 degrees and measure 12 = 114 degrees, find each measure...
- M Mathematics Find area and perimeter...
- M Mathematics At noon the temperature was 6°C. Over the next five hours the temperature dropped another 8 degrees. Then every hour until 9:00 the temperature rose 4 degrees. What was the temperature...
- M Mathematics 3y2+3(4y2-2) what is the Answer...
- M Mathematics Lyn invested $7000 into an investment paying 3% interest, compounded semi-annually, twice a year . after 5 years hiw much would the investment be worth...
- M Mathematics How do I learn how to do one step inequalities...
- M Mathematics Mary jogged from Point P to Point Q while Wyatt jogged from Point Q to Point P. Point P and point Q are 7.5 kilometers apart. Mary’s motion is represented by d = 8t and Wyatt’s motion...
- M Mathematics Half the tuna sandwiches are on white bread .25% of tge ham sandwiches sold were on brown bread .There were 20 more white bread sold yhanbon brown bread...
- M Mathematics Need help with this ASAP Must do all of them pls...
Ответ:
A. (2, -3).
Step-by-step explanation:
The first step is to complete the square on the terms in x and the terms in y:
x² - 4x +4 +y² +6y + 9 =4
= (x - 2)² - 4 + (y + 3)² - 9 + 4 + 9 = 4
= = (x - 2)² + (y + 3)² - 9 + 9 - 4 + 4 = 4
= (x - 2)² - (y + 3)² = 4.
So the centre is at (2, -3).
Ответ:
e - 9 = 2 x ( r - 9 );
So, e = 27 - r;
Then, 27 -r - 9 = 2r - 18;
18 - r = 2r - 18;
18 + 18 = 2r + r;
36 = 3r
Finally, r = 12 years (Rosa);
e = 27 - 12;
e = 15 years (Emil);