54)
a student is studying a process in which a diploid cell becomes haploid. which of these shows the correct mathematical model for the process if nnew is the number of chromosomes in the haploid cell and nold is the number of chromosomes in the diploid cell?
a) nnew = 2·nold
b) nnew =
nold
2
c) nnew = nold + 2
d) nnew = nold × 2

B

Explanation:

A haploid cells has the number of chromosomes that is the number of chromosomes of a diploid cell divided by two.

answer-

the statement that f(x) = |x+a| + b has exactly one x-intercept is sometimes correct.

solution-

it solely depends on b, whether the function will have one or two or zero x intercept.

this plot of the given function, f(x) = |x+a| + b will be the basic absolute value graph i.e v shape, with vertex translated to (-a, b), instead of origin.

1-   if b is zero, the graph will have exactly one x-intercept, at x= -a

2- if b is positive, the whole graph will be above the x-axis, hence it will have no x-intercepts.

3- if b is negative, the graph will be below the x-axis, hence it will have two x-intercepts.

∴ the statement is sometimes true.

answer australia and antarctica;