Use the substitution method
f(x)= 6x-4
f(8)= 6(8)-4
f(8)= 48-4
f(8)= 44
Answer is f(8)= 44
Answer:
y=x and y=2/3x
Step-by-step explanation:
Every point on line a has an equal x and y value so y=x. For line b, the y value of every point is 2/3 of the x value. So at (3,2) 2/3 of 3(the x value) is 2(the y value).
Answer:
17.5 meters
Step-by-step explanation
I included an illustration of what they are asking for.
- Notice, since the light of the sun is coming from the same place, the shadow angles relative to the ground, X and Z, will be the same. So the triangles formed are similar
- Use SOH CAH TOA to find the angle Z
- This just means when you have an angle in a right triangle, in order to know whether to use Cosine, Sine or Tangent, look at what sides you have
- We have the sides opposite (O) and adjacent (A) to angle Z, so we tangent (T)
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- Now since angle Z equals X, they have the same tangent value
- So we can use that to find the building height, which it the opposite (O)
- Don't forget to use the new adjacent 14m
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I will help you don’t worry the answer do you need all of them