Answer: 3a - 8
The product of ‘a number’ and 3 could be written as 3 x a or 3a
Eight less than 3a means 3a minus 8 or 3a - 8
Answer:
sqrt(13) =x
Step-by-step explanation:
We have 2 right triangles, one on the right and one on the left
The base is 1/2 of 4 or 2 and the height is 3
We can use the Pythagorean theorem to find the hypotenuse
a^2 + b^2 = c^2
2^2 + 3^2 = x^2
4+9 = x^2
13 = x^2
Take the square root of each side
sqrt(13) =x
Power= work/time, work/time=(force x displacement)/time
therefore, power= (Fd)/t
Total blocks = 35+47+22+21 = 125
Sum of red blocks and green blocks = 47+35 = 82
So the probability = 82/125 = 0.656
