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Thepotemich [5.8K]
3 years ago
12

Graph the circle x^2+y^2+2x+4y-44=0

Mathematics
1 answer:
Natasha_Volkova [10]3 years ago
6 0

Answer:

See explanation

Step-by-step explanation:

First, convert this to standard form. By completing the square, you can do the following:

(x^2+2x+1)-1+(y^2+4y+4)-4-44=0

(x+1)^2+(y+2)^2=49

This is a circle with center (-1,-2), and radius 7. It looks like the one I graphed below. Hope this helps!

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Mrs. Penn charges $10.00 an hour on top of a $5.00 flat fee for tutoring. Mrs. Smith charges $14.00 an hour with no flat fee. Wr
Anna71 [15]

Answer:

1.25 Hours (1 hour & 15 minutes)

Step-by-step explanation:

14x = 5 + 10x  

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Divide by 4 on both sides

x = 1.25

It will take 1 hour and 15 minutes (1.25 hours) for Mrs. Penn and Mrs. Smith to be paid the same amount.

6 0
2 years ago
Help please ASAP I need the anwser or I will fail :( please hurry
almond37 [142]

Answer:

75

Step-by-step explanation:

add all of the numbers together and devide  by 6.

7 0
2 years ago
The sum of 3 integers is 194. the sum of the first and second integers exceeds the third by 80. The third integer is 45 less tha
kirill115 [55]
Let
x = first integer
y = second integer
z = third integer
First equation: x + y + z = 194
Second equation: x + y = z + 80
Third equation: z = x - 45

Let's find the values of x, y and z.
Substitute 3rd eq to 1st eq:
x + y + x - 45 = 194
2x + y = 45 + 194
y = -2x + 239

Plug in both we have solved for y and the 3rd eq to the 2nd eq to find x
x + (-2x + 239) = (x - 45) + 80
x - 2x - x = -45 + 80 - 239
-2x = -204
x = -204/-2
x = 102

Solving for y,
y = -2(102) + 239
y = 35

Solving for z,
z = 102 - 45
z = 57
5 0
3 years ago
Change the following decimal numbers to percents. .25 .278 2.9 3.0 0.67
umka2103 [35]
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3 0
3 years ago
Read 2 more answers
Colby left out reasons from his proof.<br> PHOTO ABOVE
iren2701 [21]

Answer:

B

Step-by-step explanation:

3 0
3 years ago
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