B) Use the quadratic formula to find the value of t, t? + 16 = 10t.
SECTION : B (40 Marks)
11. a) In a circle o is the centre of the circle ,given that AO=BO=CO=radius
of the circle. If the size of angle AOB = 98° what is the size of angle ACO.
b) The mass off 40 students were recorded as follows:
Mass in kg
40-44
45-49
50-54
55-59
60-64
No. of students
5
8
10
11
6
Determine : i) the mean ii) the mode
iii) the median
12. a) A figure below is a cube ABCDEFGH of side 10 cm. Find,
i) the length AG ii) the size of angle between AG and the base
ABCD.

Heat from earths interior and pressure from overlying rock transform the remains of marine sediments into

Considering the yellow and green pea color phenotypes studied by gregor mendel: a. what is the biochemical function of the protein that is specified by the gene responsible for the pea color phenotype? (1 point) b. a null allele of a gene is an allele that does not specify (or encode) any of the biochemical function that the gene normally provides (in other words, either no protein at all or only non-functional protein is produced from it). of the two alleles, y and y, which is more likely to be a null allele? (1 point) c. in terms of the underlying biochemistry, why is the y allele dominant to the y allele? (2 points) d. why are peas that are yy homozygotes green? (1 point) e. the amount of protein produced from a gene is roughly proportional to the number of functional copies of the gene carried by a cell or individual. what do the phenotypes of yy homozygotes, yy heterozygotes, and yy homozygotes tell us about the amount of sgr enzyme needed to produce a yellow color? explain your reasoning. (2 points)

In which terrestrial biome can you find trees that produce cones instead of flowers and needles instead of leaves? have trees that produce cones instead of flowers and needles instead of leaves. the latitudes in this biome have evenly distributed precipitation throughout the year. is it high or low