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3 years ago

Find the equation for the circle with center (4,-5) and passing through (5,-4)

Mathematics

1 answer:

jasenka [17]3 years ago

7 0

Answer:

(x -4)^2 +(y +5)^2 = 2

Step-by-step explanation:

The equation of a circle centered at (h, k) through point (p, q) is ...

(x -h)^2 +(y -k)^2 = (p -h)^2 +(q -k)^2

Filling in your given numbers gives ...

(x -4)^2 +(y +5)^2 = (5-4)^2 +(-4+5)^2

(x -4)^2 +(y -5)^2 = 2

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Answer:

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2 years ago

The table shows a linear relationship between x and y

irga5000 [103]

We have been given a table that shows a linear relationship between x and y. We are asked to find the rate of change change of y with respect to x.

To solve our given problem, we will find the slope of the line passing through the given points.

$m=\frac{y_2-y_1}{x_2-x_1}$

Let us find slope of line using points $(-20,96)$ and $(-2,15)$ .

$m=\frac{15-96}{-2-(-20)}$

$m=\frac{-81}{-2+20}$

$m=\frac{-81}{18}$

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Therefore, the rate of change of y with respect to x is $-4.5$ .

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3 years ago

Martha jarred 6 liters of jam after 2 days. How many days does Martha need to spend making jam if she wants to jar 21 liters of

lana66690 [7]

Answer: 7

Step-by-step explanation:

if Martha jarred 6 liters of jam in 2 days,

she will jarred 3 litters of jam in one day

for 21 litters she will need 7 days

21/3=7

3 0

2 years ago

At a hardware store, a tool set normally costs $80. During a sale this week, the tool set costs $12 less than usual. What percen

Sav [38]

Answer:

Answer is 15%

You have to do a proportion

12. = x

80 100 and u have to cross multiply

80x = 1200

80. 80

then divide 1200÷80=15

Step-by-step explanation:

5 0

3 years ago

Explain what needs to be fixed.<br> 2n + 10 = -2<br> 2n = 12 Step one<br> n = 6 Step two

Brilliant_brown [7]

Answer:

step one needs to be fixed... you are supposed to subtract 10 from both sides of the equation.

Step-by-step explanation:

STEP 1: Move all terms not containing n to the right side of the equation.

$2n=-12$

STEP 2: Divide each term by 2 and simplify.

$n=-6$

8 0

3 years ago