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mafiozo [28]
3 years ago
5

HELP ME WITH IXL! SOMEONE, PLEASE HELP ME WITH IXL... THIS IS CONFUSING FOR ME. AND PLEASE PUT A EXPLANATION TO YOUR ANSWER... P

LEAsee Helpp

Mathematics
1 answer:
rodikova [14]3 years ago
4 0
WHAT GRADE ARE YOU IN
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Which equation represents the circle described? (in picture)
Sedaia [141]
You are right. In circle equation we have =r² so the correct answer will be C od D.  But we have to calculate the center of a circle.

x^2+y^2-8x-6y+24=0\quad|-24\\\\(x^2-8x)+(y^2-6y)=-24

Complete the square:

x^2-8x+a^2\implies a=\dfrac{8x}{2x}=4\implies x^2-8x+4^2\\\\\\y^2-6y+b^2\implies b=\dfrac{6y}{2y}=3\implies y^2-6y+3^2

And we have:

(x^2-8x)+(y^2-6y)=-24\\\\(x^2-8x+4^2)-4^2+(y^2-6y+3^2)-3^2=-24\\\\
(x-4)^2+(y-3)^2-16-9=-24\\\\(x-4)^2+(y-3)^2-25=-24\quad|+25\\\\\boxed{(x-4)^2+(y-3)^2=1}

So the answer is C (the same left side of equation).
6 0
3 years ago
Subtract. <br> 23.87 - 1.12<br><br> A. 13.75<br><br> B. 22.75<br><br> C. 24.99<br><br> D. 12.67
Shtirlitz [24]

Answer:

B. 22.75

Step-by-step explanation:

23.87

<u>-   1.12</u>

22.75

7 0
3 years ago
Read 2 more answers
Quinzel earns $1,254 each month. His total deductions are 20% of his pay. How much is deducted from his pay each month? A. $62.7
Blababa [14]
The answer is C. 250.80

change the percent to a decimal (0.20) and multiply 1,254x0.20=250.80
6 0
3 years ago
Write an expression to represent the length of a string in yards in terms of the string's length, x, in inches
Sergio039 [100]

Answer:

y = \frac{x}{36}

Step-by-step explanation:

Given

Length of string = x inches

Required

Determine the length in yards

Represent the equivalent length with y

Such that

y = x\ inches

Divide x by 36 to get equivalent in yards

y = \frac{1}{36} * x

y = \frac{x}{36}

Hence, the equivalent in yards is \frac{x}{36}

3 0
3 years ago
For my brother 2x-3+6x=21<br> X= what
AnnZ [28]

Answer:

3

Step-by-step explanation:

mhm for your brother

anyways...

2x-3+6x = 21

Adding like terms

8x -3 = 21

Adding 3 on both sides

8x = 24

Dividing both sides by 8

x = 3

4 0
3 years ago
Read 2 more answers
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