What is the equation of the line that passes through the point (-5,5) and has a slope of -1
1 answer:
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Answer:
The tree is 17.5 ft tall
Step-by-step explanation:
We can use proportions to solve this.
Notice that Emily (5 feet tall) and her shadow (8 feet long) constitute the two legs of a right angle triangle (see attached image).
The nearby tree (unknown height H), will also cast a shadow (28 ft long) with the same inclination as Emily does due to the unique position of the sun relative to them.
Then we can use the proportion associated with the sides of similar triangles:
Then, we can solve for H in the equation:
Answer: 0.25 or 25%
Step-by-step explanation:Women have two chromosomes XX and men have two also XY.
From the question, it can be seen that colorblindness is an X-linked recessive condition.
Let the X-linked recessive gene be specified as and the dominant gene which is not colorblind linked as
.
The question says the woman has a father who is colourblind which means her father possesses the X-linked recessive gene which means he has chromosomes
and therefore must have given his daughter the recessive gene
For her husband who has normal vision his chromosomes will be .
So, the probability that their son will be colourblind will be;
Chromosomes Y
.
.
.
Therefore, the probability that their son will be color blind = ¼ or 0.25 or 25%
