Two and one eighth is the answer
3x+3y=-3
divide both sides by 3 for ease
x+y=-1
now eliminate x's
multiply that equation by 2 and add to other one
2x+2y=-2
<u>-2x+y=2 +</u>
0x+3y=0
3y=0
y=0
x+y=-1
x+0=-1
x=-1
(x,y)
(-1,0)
Answer:
a
Step-by-step explanation:
Given
u = (x₁, y₁, z₁ ) and v = (x₂, y₂, z₂ ) then the dot product is
u • v = (x₁ x₂ ) + (y₁ y₂ ) + (z₁ z₂ )
Then
v • w
= (5 × 9) + (- 4 × - 2) + (4 × 7)
= 45 + 8 + 28
= 81 → a
Accuracy is how close a measured item is to the actual or true value and precision is how close the measured items are to being the same. So you could weight 5 apples. If each apple weights 2 lbs and you said that the 5 apples weight a total of 10lbs you are determining the precision. Precision is independent of accuracy. Accuracy would be if you put all 5 apples on the scale at one time and knew a exact amount.