3 years ago

The ratio of the area of a circle, P , to the area of another circle, Q , is 16/81 .

1 answer:

6 0

Ratio of the radii = sqrt16 / sqrt81 = 4/9

so radius of circle Q is found by solving 4/9 = 8/x where x = radius of Q

x = 2*9 = 18

radius of circle Q = 18.

You might be interested in

Which number is the largest? A. 20.999 B. 21.767 C. 21.76 D. 21.80 E. 21.798

Elza [17]

Answer:

21.80

Step-by-step explanation:

3 0

2 years ago

Enter an equation that can be used to solve this problem, where x represents the number of hours that Roberto had been traveling

nalin [4]

45mph x35 mph = 1 hour

6 0

3 years ago

(3 - 91i) + (67) = Express your answer in the form (a - bi).

victus00 [196]

9514 1404 393

Answer:

70 -91i

Step-by-step explanation:

Collect terms the same way you would if i were a variable.

(3 -91i) +67 = (3 +67) -91i = 70 -91i

6 0

3 years ago

What are the coordinates of 2x-4y=6 and 3x+y=-5 ?

RideAnS [48]

Answer:

The coordinates are x = -1 and y = -2.

Step-by-step explanation:

Given:

Equations are 2x-4y=6 and 3x+y=-5.

Now, to find the coordinates.

$2x-4y=6$ ...........(1)

$3x+y=-5$ ...........(2)

So, first we solve the equation 1 to get the value of $x$ .

$2x-4y=6$

Subtracting both sides by $-4y$ we get:

$2x=6+4y$

Dividing both sides by 2 we get:

$x=3+2y$

Now, we put the value of $x$ in equation 2 to get $y$ .

$3x+y=-5$

$3(3+2y)+y=-5$

$9+6y+y=-5$

$9+7y=-5$

On solving the whole equation we get :

$y=-2$

And, now putting the value of $y$ in equation (1) we get $x$ :

$2x-4y=6$

$2x-4(-2)=6$

$2x+8=6$

$2x=6-8$

$2x=-2$

on solving we get:

$x=-1$

Therefore, the coordinates are x=-1 and y=-2.

5 0

3 years ago

Factor -6m + 9. -6(m - 3) -6(m + 9) -3(2m + 3) -3(2m - 3)

jeka57 [31]

It would be the second to last answer bc of the factors

4 0

3 years ago