Answer: 1. Peer review involves scientists openly publishing details of the methods they used, the results of
their experiments, and the reasoning behind their hypotheses for other scientists working in the
same field to evaluate. = B true .
2. Data from controlled experiments can provide evidence that one variable causes another. = B true .
Step-by-step explanation:
Peer review is when a scientist conducts an experiment and then gives all of their information and findings to peers in order for them to follow the findings and see if the first findings are rational.
The answer choice A is correct
Answer:
5 and 25
Step-by-step explanation:
let the son's age be x then the father's age is x + 20
In 5 years
son = x + 5 and father = x + 20 + 5 = x + 25
Then
x + 25 = 3(x + 5) ← father is three times as old as son
x + 25 = 3x + 15 ( subtract x from both sides )
25 = 2x + 15 ( subtract 15 from both sides )
10 = 2x ( divide both sides by 2 )
5 = x and x + 20 = 5 + 20 = 25
si=on is 5 and father is 25
P = 2(L + W)
P = 114
W = 23
114 = 2(L + 23)
114 = 2L + 46
114 - 46 = 2L
68 = 2L
68/2 = L
34 = L <=== so the length is 34 ft