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3 years ago

Find the center and radius of the circle that has(-2,5)and(-4,9)as endpoints of the diameter.

Mathematics

1 answer:

Naya [18.7K]3 years ago

8 0

Use the Midpoint formula:
( (x1 + x2) / 2 , (y1 +y2) / 2 )

( ((-2 + (-4)) /2, (5-9)/2 )
Midpoint: (-3, 7)

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muminat

Answer lit

Step-by-step explanation:

6 0

2 years ago

Translate the sentence into an equation. Four more than the quotient of a number and 8 is 9. Use the variable y for the unknown

Virty [35]

Equation : 4+( y/8) = 9

8 0

3 years ago

A line in the xy-plane that passes through the coordinate points (3, -6) and (–7, –4) will never intersecta line that is represe

anyanavicka [17]

Answer:

option A

Step-by-step explanation:

given coordinate (3, -6) and (–7, –4)

to find the equation of line

slope of the line passing through both the point will be

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

$m = \dfrac{-4+6}{-7-3}$

$m = -\dfrac{2}{10}$

equation of line

( y - y₁ ) = m ( x - x₁ )

$y + 6= -\dfrac{2}{10}(x - 3)$

x + 5 y = -27

line which will not intersect will be parallel to it so option A has same slope as our line equation i.e. -1/5

hence, correct answer is option A

3 0

3 years ago

Ms. Nina has 10 lbs of 25% sugar syrup. How much water does she need to add to make 10% sugar syrup

Inessa [10]

10*0.25=2.5
2.5/10*100=25 lbs
25-10=15 lbs
Nina need to add 15 lbs of water

7 0

3 years ago

A farmer sells almonds according to the chart below. The more pounds of almonds that are sold, lower cost the cost per pound is

Naddik [55]

Answer:

horizontal line with a open circle at (20,10) and an closed circle at (30,10)

$ 207.50

Step-by-step explanation:

20.75 is between 20 and 30

From the given table , we can see that

for more than 20, up to 30 pounds, the cost per pound is $10

This means, the pounds greater than 20 and less than 30 cost per pound is $10

More than 20 means pounds not equal to 20. its close to 20

So there is a open circle at 20

Cost per pound remains the same from 20 to 30

So horizontal line with a open circle at (20,10) and an closed circle at (30,10)

Total cost of 20.75 pounds of almonds = 20.75 * 10 = 207.50

4 0

3 years ago

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