Answer: x=4
Step-by-step explanation:
similar triangle so corresponding parts are similar

cross multiply
70 = 20x-10
80 = 20x
x = 4
Answer:
Image point → (-4, 0)
Step-by-step explanation:
Coordinate of a point → (0, 1)
Rule for the transformation has been given as,
D₄ o R₉₀
First use R₉₀ → Rotation of the point by 90° counterclockwise
Rule for the rotation of a point (x, y) by 90° counterclockwise about the origin,
(x, y) → (-y, x)
(0, 1) → (-1, 0)
Further use D₄ → Dilation of the point by a scale factor of 4 about the origin
If a point (x, y) is dilated by a scale factor 'k' about the origin rule for the dilation is,
(x, y) → (kx, ky)
By applying this rule,
(-1, 0) → (-4, 0)
Therefore, image point will be → (-4, 0)
Answer:
B
Step-by-step explanation:
The exponential function
shows the exponential growth if 
Consider choice B.
If x=1, then 
if x=2, then 
if x=3, then
if x=4, then 
This means that the function
represents the table B.
Answer:

Step-by-step explanation:
a.


See attached diagram.
b.

Answer: 2 soulutions
Step-by-step explanation: Just factor them and solve the answer would be x = 4 √3 + 8 in its exact form and x = 14.92820323... in its decimal form