All categories

3 years ago

The points (a,5) and (9,b) are on the circle x^2+ y^2= 125.

Mathematics

1 answer:

Aneli [31]3 years ago

5 0

Answer:

a = 10

b = 6.633

Step-by-step explanation:

x²+ y²= 125.

In this equation, the value of x and y represent the coordinates of x and y respectively of point on which the circle passes.

(a,5)

x²+ y²= 125

a² + 5² = 125

a² + 25 = 125

a² = 125-25

a² = 100

a = √100 = 10

(9,b)

x²+ y²= 125

9² + b² = 125

b² 125 - 81

b² = 44

b = √44 = 6.633

You might be interested in

I don’t understand i need help please

worty [1.4K]

Answer:

Step-by-step explanation:

You need to make a shape that is the same shape and size to the triangle on the page.

7 0

3 years ago

#12 with explanation please

4vir4ik [10]

Answer:

30.01 units

Step-by-step explanation:

Given vertices WXYZ:

W(-4,5), X(2,4), Y(3, -4), Z(-1, -6)

Perimeter is the sum of the side length.

Use distance formula to find each side:

WX = $\sqrt{(2+4)^2+(4-5)^2} =\sqrt{37}$ ≈ 6.08
XY = $\sqrt{(3-2)^2+(-4-4)^2} =\sqrt{65}$ ≈ 8.06
YZ = $\sqrt{(-1-3)^2+(-6+4)^2} =\sqrt{20}$ ≈ 4.47
WZ = $\sqrt{(-1+4)^2+(-6-5)^2} =\sqrt{130}$ $\sqrt{(-1+4)^2+(-6-5)^2}=\sqrt{130}$ ≈ 11.40

Find perimeter:

P = 6.08 + 8.06 + 4.47 + 11.40 = 30.01 units

7 0

3 years ago

A line cook is paid at the end of each workday. His daily earnings include $74 plus X percent of the Restaurants total tip at th

Katen [24]

Hi idk but I’ll ask

6 0

3 years ago

What is the slope - intercept equation for this line?

Makovka662 [10]

Answer:

y = -2x - 1

Step-by-step explanation:

the ? mark part or the first [] is the slope

the slope is rise / run

the "rise" is 2 down

the "run" is 1 left

-2 / 1 is the slope

the y intercept is -1 as the line touches the y axis at -1

y = -2x - 1

is your answer

3 0

1 year ago

What is the answer to this 3a^2-9a

olchik [2.2K]

If i'm correct, the answer should be

-3a

hope this helped! 8)

4 0

3 years ago

Read 2 more answers