Answer:
C
Step-by-step explanation:
The values are not vectors so ST/SR should be 3
Answer:
x = 12.
Step-by-step explanation:
If P(5,4),Q(8,10) and R(x,18) are collinear
then the slope of PQ equals the slope of QR
hence:
(10 - 4)/(8 - 5) = (18 - 10)/(x - 8)
6/3= 8/(x - 8)
2 = 8/(x - 8)
multiplying both sides by (x - 8) gives:
2(x - 8) = 8
2x - 16 = 8
2x = 8 + 16 = 24
hence x = 12
Very simple. You just use the vectors as normal numbers, and multiply the coordinates with 2 and 4 like this:
2*u = 2* (2,4) = (4,8)
4*w = 4* (-1,3) = (-4,12)
(4,8) - (-4,12) = (8,-4)
So the vector has the coordinates (8,-4)
27-48x^4= 3(9-16x^4)
Because 3 is the GCF
Answer:
The scale factor is 1.5.
Step-by-step explanation:
Divide the length of the image, 12, by the length of the preimage, 8, which will give you 1.5
12 ÷ 8 = 1.5
Therefore, the scale factor of the image is 1.5.