Answer:
function A
Step-by-step explanation:
because that is the answer
![\frac{9(14+16)*2-(8*4+12*9)}{40} \\ \frac{(9*2)(14+16)-[(8*4)+(12*9)]}{40}\\ \frac{(18*30)-(32+108)}{40}\\ \frac{540-140}{40}\\ \frac{400}{40}\\ 10](https://tex.z-dn.net/?f=%20%5Cfrac%7B9%2814%2B16%29%2A2-%288%2A4%2B12%2A9%29%7D%7B40%7D%20%5C%5C%0A%5Cfrac%7B%289%2A2%29%2814%2B16%29-%5B%288%2A4%29%2B%2812%2A9%29%5D%7D%7B40%7D%5C%5C%0A%5Cfrac%7B%2818%2A30%29-%2832%2B108%29%7D%7B40%7D%5C%5C%0A%5Cfrac%7B540-140%7D%7B40%7D%5C%5C%0A%5Cfrac%7B400%7D%7B40%7D%5C%5C%0A10)
So the expression is equal to
10.
Answer:
d
Step-by-step explanation:
Given the x and y are in direct variation then the equation relating them is
y = kx ← k is the constant of variation
To find k use the condition y = 12 when x = 4, that is
12 = 4k ( divide both sides by 4 )
3 = k
y = 3k ← equation of variation
When x = 20 , then
y = 3 × 20 = 60 → d
When r is closest to 1, it is a strong positive correlation. When r is closest to -1 it is a strong negative correlation. When r is about 0.8 or anything similar, it is a weak positive. Similar to if r is -0.8 it would be a weak negative correlation. Hope this helps.
