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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

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

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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