What is the answer plz ?
1 answer:
Answer:
18°
Explanation:
Remember this:
All angles inside a triangle sum up to 180°.
So in your case:
∠A + ∠B + ∠C = 180°
Now you need to solve for ∠A, but you need to know what x is first. So we solve for it by plugging in the expressions into one equation. Let's start with what is given:
∠A = x -22
∠B = 3x + 19
∠C = x - 17
So we plug use the given and put it into our first equation so we can solve for x:
∠A + ∠B + ∠C = 180°
(x - 22) + (3x + 19) + (x - 17) = 180°
Now that we know that x = 40, we substitute that into the equation of ∠A.
∠A = x -22
∠A = 40 -22
∠A = 18°
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Answer:
the frequency of the resistant allele after one generation is 0.989
Explanation:
Given that :
A farmer plants Bt cotton that is genetically modified to produce its own insecticide.
Of the cotton bollworms feeding on these Bt plants, only 5% survive
i.e the survival rate s = 5% =0.05
unless they have at least one copy of the dominant resistance allele R that confers resistance to the Bt insecticide
Frequency of R allele = 0.01
In order to determine what will the frequency of the resistance allele be after one generation of cotton bollworms fed on Bt cotton; we need to first determine the frequency of the recessive allele r.
According to Hardy-Weinberg Equilibrium ;
p+q = 1
Let p = R and q = r
R + r = 1
0.01 + r = 1
r = 1 - 0.01
r = 0.99
Now; the frequency of the resistance allele after one generation can be calculated as :
where ;
q' = R
q = r
q' = 0.989
Thus; the frequency of the resistant allele after one generation is 0.989