Answer:
75years
Explanation:
Let the Father's age be represented by 2x
Let the Son's age be represented by x
Five years ago;
Man's age will be = 2x - 5
Son's age will be = x - 5
If the ratio of their ages five years ago was 9:4, then;
2x - 5/x-5 = 9/4
4(2x - 5) = 9(x - 5)
8x - 20 = 9x - 45
- Collect like terms
-20 + 45 = 9x - 8x
25 = x
Hence, the son's age = 25 years
If x = 25, the father's age (2x) will be 2 × 25 = 50years
The sum of their ages will be = 25years + 50years = 75years
Answer:
no
Explanation:
seaweed only grows in the oceans of runoffs of it
zebras live on land
Answer:
because the items in a meal are all different and digest differently
Answer:
The body has two lines of natural defense to protect against infection. The first are physical barriers, such as the skin, body secretions and mucous membranes. The second line of defense is the immune system. Specialized immune cells coordinate and execute attacks to kill germs that make it past the body's physical barriers.
The genotype for the possible children is 'AATt, AAtt, Aatt, AaTt'. Woman has normal pigment which means she must have at-least one' 'A. her father is albino and albino allele is recessive , so his genotype is 'aa'. Then 'Aa' genotype is present in skin.
Woman cannot taste PTC because the ability ti taste PTC is dominant .So 'tt' genotype is present for tasting trait. Putting both the trait the woman's genotype is 'Aatt'.
(PTC) Phenylthiocarbamide tasting is a trait governed by pair of alleles , 'T' is for tasting dominant and recessive 't' is for non- tasting.The genotype of parents perform a punnett square to determine the F1 offspring. And the genotype of possible children can be determine.
To learn more about Phenylthiocarbamide tasting here
brainly.com/question/14551381
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