Answer:
The estimated mean number of rockets hits in the region is 533.
Step-by-step explanation:
We are given the following information,
Number of rocket hits | Observed number of regions
0 | 228
1 | 214
2 | 94
3 | 32
4 | 7
5 | 0
6 | 0
7 | 1
We are asked to estimate the mean number of rocket hits in the region.
The mean or expected value is given by
Therefore, the mean number of rockets hits in the region is 533.
and
are vectors and:
![\vec{u}=14j=0i+14j=[0,14]\\\\ \vec{v}=i+4j=1i+4j=[1,4]](https://tex.z-dn.net/?f=%5Cvec%7Bu%7D%3D14j%3D0i%2B14j%3D%5B0%2C14%5D%5C%5C%5C%5C%0A%5Cvec%7Bv%7D%3Di%2B4j%3D1i%2B4j%3D%5B1%2C4%5D)
is the dot product or scalar product, so:
![\vec{u}\cdot\vec{v}=[0,14]\cdot[1,4]=0\cdot1+14\cdot4=56](https://tex.z-dn.net/?f=%5Cvec%7Bu%7D%5Ccdot%5Cvec%7Bv%7D%3D%5B0%2C14%5D%5Ccdot%5B1%2C4%5D%3D0%5Ccdot1%2B14%5Ccdot4%3D56)
Correct answer is A.
54 = 3x + 37.5 <== ur equation....and x = number of years
54 - 37.5 = 3x
16.5 = 3x
16.5 / 3 = x
5.5 = x......so it would take 5.5 years...or 5 1/2 years <=
Answer:
The answer is D
Step-by-step explanation:
When you divide 110 by 8 that equals 13.75 but when you divide 120 by 8 you get 15.
Hopefully this helps you :)
Answer:
(-4,5)
*View attached graph*
Step-by-step explanation:
y = -2x - 3
4y + x = 16
4y + x = 16
4(-2x - 3) + x = 16
-8x - 12 + x = 16
-7x - 12 = 16
+12 + 12
-7x = 28
/-7 /-7
x = -4
4y + x = 16
4y + (-4) = 16
4y - 4 = 16
+ 4 + 4
4y = 20
/4 /4
y = 5
(x,y) -> (-4,5)
Hope this helps!
