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aliina [53]
3 years ago
8

A lamina occupies the part of the disk x2 + y2 ≤ 4 in the first quadrant. Find the center of mass of the lamina if the density a

t any point is proportional to the square of its distance from the origin. (x, y) =
Mathematics
1 answer:
guajiro [1.7K]3 years ago
5 0

Answer:sei

Step-by-step explanation:

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5.) What is the mean of the data?<br> 3, 3, 5, 5, 5, 7, 7, 8, 15, 15
uranmaximum [27]

Answer:

How to Find the Mean. The mean is the average of the numbers. It is easy to calculate: add up all the numbers, then divide by how many numbers there are. In other words it is the sum divided by the count.

7 0
3 years ago
A golfer hits a ball from a starting elevation of 2 feet with a velocity of 70 feet per second down to a green with an elevation
ikadub [295]

Answer:

4.50 s

Step-by-step explanation:

The motion of the ball is represented by the following equation:

h(t) = 2+70t-16t^2 (1)

where

h(t) is the elevation at time t

2 ft is the initial elevation at t = 0

+70 ft/s is the initial vertical velocity

-32 ft/s^2 is the acceleration due to gravity

The green is located at an elevation of -7 feet, so the ball lands on the green when

h(t) = -7

Substituting into (1)

-7=2+70t-16t^2

And re-arranging we get

16t^2-70t-9=0

This is a second-order equation in the form

at^2+bt+c=0

which has solutions

t_{1,2}=\frac{-b\pm \sqrt{b^2-4ac}}{2a} (2)

Here we have:

a = 16

b = -70

c = -9

Substituting into (2) we find the solutions:

t_{1,2}=\frac{70\pm \sqrt{(-70)^2-4(16)(-9)}}{2(16)}

The two solutions are:

t = 4.50 s

t = -0.125 s

The second solution is negative, and since negative time has no physical meaning, the only correct solution is

t = 4.50 s

5 0
3 years ago
How do you do this math 18-0.4<br> in long subtraction
Gwar [14]
 18.0                  1
-  0.4             17.0
_____           - 0.4
------->           ____
                     17.6
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3 years ago
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Both questions I need help on! Thank you.
svetoff [14.1K]
Please help us!!we really need gwlp
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3 years ago
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Choose the equation below that represents the line passing through the point (-3,-1) with a slope of 4.
Bingel [31]
Y = mx + b
slope(m) = 4
(-3,-1)...x = -3 and y = -1
now we sub...we r looking for b, the y int.
-1 = 4(-3) + b
-1 = -12 + b
-1 + 12 = b
11 = b

so ur equation is : y = 4x + 11

8 0
3 years ago
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