Answer: The answer is 9, 12, 13
Answer:
Step-by-step explanation:
Each triangle has a formula of 1/2 a*b
So one triangle = 1/2 * 12 * 15 = 90
So the other one is the same area of 90 square feet.
Together they make 180 square feet.
You can check this by simply multiplying a*b = 12 * 15 = 180 square feet.
Answer:
B. g(X) = (x+1)(X+4)(x-5)
Step-by-step explanation:
If you multiply to each other you would get this x3-21x-20
SU RE sorry okay 20 so so
Answer:
Step-by-step explanation:
- Let the speed of raft (current) - r
- Speed of motorboat - 12 km/h
- The distance between villages - 44 km
- Let the time spent by Aniskin - t
- The time the thief was in travel = 2 hr 40 min + t = 2 40/60 + t = 3/8 + t
- The distance the thief traveled = 44 - 27 = 17 km
<u>We have following equations:</u>
- r(8/3 + t) = 17
- (12 - r)t = 27
<u>Simplify the equations:</u>
- r(8/3 + t) = 17 ⇒ rt + 8/3r = 17
- (12 - r)t = 27 ⇒ 12t - rt = 27
<u>Add up the equations and solve for r:</u>
- rt + 8/3r + 12t - rt = 44
- 8/3r + 12t = 44
- r = 16.5 - 4.5t
<u>Substitute r into second equation:</u>
- (12 - 16.5 + 4.5t)t = 27
- 4.5t² - 4.5t = 27
- 9t² - 9t - 54 = 0
<u>Solving we get</u>
<u>Find r:</u>
- r = 16.5 - 4.5*3 = 3 km/h