Enter an equation that can be used to solve this problem, where x represents the number of hours that Roberto had been traveling
1 answer:
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Answer:
76.5 cm²
Step-by-step explanation:
Given the triangles are similar , then
ratio of sides = a : b , so
ratio of areas = a² : b²
Here ratio of sides = 9 : 13.5 = 2 : 3
ratio of areas = 2² : 3² = 4 : 9
let x be the area of Δ DEF and using proportion
=
( cross- multiply )
4x = 306 ( divide both sides by 4 )
x = 76.5
The area of Δ DEF = 76.5 cm²
Answer:
0.599 is the probability that a randomly selected page does not need to be retyped.
Step-by-step explanation:
We are given the following in the question:
The number of typing errors made by a typist has a Poisson distribution.
The probability is given by:
We have to find the probability that a randomly selected page does not need to be retyped
P(less than or equal to 7 mistakes in a page)
Thus, 0.599 is the probability that a randomly selected page does not need to be retyped.