Answer:
1. 1/2 or .5 (same thing)
2. 1
3. -4k
4. 28n^5
Step-by-step explanation:
1.
2/2^2 → 2/4 = .5
2.
3^4/3^4 → 81/81 = 1
3.
3k^2/7k = -4k
4.
7n^4 x 4n = 28n^5
The sample correlation coefficient r is equal to 0.9962
<span>The linear correlation coefficient is positive. -1 </span>≤ r ≤ + 1.
0.9962 is nearer to +1. Thus, the linear correlation is positive.
Pls. see attachment.
Answer:
y = -2x -2
x + 2y = 2
2x + y = -2 } x1
x + 2y = 2 } x2
2x + y = -2 } we eliminate 2x
2x + 4y = 4 } same signs subtract and different add respectively
-3y = -6
-3 -3
y = 2 (x , 2) we reserve
2x + (2) = -2 we take on the first equation and replace 2 on a coordinate for y
2x = -2 - 2
2x = -4
2 2
x = -2 (-2,2)
x y
I can answer your first question she can do 5 minutes at the most. If she does 20 per minute, for one is 20, for two minutes is 40, three is 60, four is 80 and five is 100 ft.
Answer:
ZWU ~ WYU
WY = 2.5
UY= 1.5
Step-by-step explanation:
ZUW ~ WUY ~ ZWY
5/3=x+1/x
Cross multiply
5x=3x+3
2x=3
x=3/2 OR 1.5