Answer:
20
Step-by-step explanation:
2x=40 so once you divide both sides by 2 you get x=20
For 1
1st. 5x+20= 5x(x+4)
2st. 4x-6= 2x(2x-3)
Your welcome if u want i can explain :)
Answer:
Step-by-step explanation:
<u>Given point </u>
<u>Dilation by a scale factor of 74:</u>
- (x, y) → (74x, 74y)
- (3, -4) → (74*3, 74(-4)) = (222, -296)
<u>Rotation by 180°:</u>
- (x, y) → (-x, -y)
- (222, -296) → (-222, 296)
The probability that a single radar set will detect an enemy plane is 0.9. if we have five radar sets, what is the probability that exactly four sets will detect the plane?
Solution: The given random experiment follows binomial distribution with 
Let x be the number of radar sets that will detect the plane.
We have to find 


Therefore, the probability that exactly four sets will detect the plane is 0.3281