Morgan says that the domain of the relation {(2,3), (-4, 2), (0,-4), (1,5)} is {-4, 2, 3, 5}. She is incorrect. Find her mistake
Jlenok [28]
Answer:
Step-by-step explanation:
No she is not correct.
domain are the x co-ordinates (no repetition)
Domain:{-4,0,1,2}
Answer:
....
Step-by-step explanation:
i had this on my last year book
lemme see if i can find if
3 because u have to do 3 times 4 than add that one witch give you 13 over 4 so u have to divide 4 and 13 witch gives u 3
We need to find a tree such that the angle of elevation from the end of the shadow to top of the tree is 40 degrees.
The length of the shadow is the adjacent side and is 35.
The height of the tree is the opposite side. Let it be x.
Tan ratio = opposite/adjacent
tan(40) = x/35
x = 35*tan(40) = 29.37
Answer: Height of the tree is 29 feet
The building will be making 90° with the ground/horizontal.
Then we can apply Pythagoras theorem.
(Base)² + (Height)² = (Hypotenuse)²
=> x² + (12 foot)² = (37 foot)²
=> x² = (37 foot)² - (12 foot)²
We can expand LHS using a² - b² = (a + b)(a - b)
=> x² = (37 + 12 foot)(37 - 12 foot)
=> x² = 49 * 25 foot²
=> x² = (7 * 5)² foot²
=> x = 7 * 5 foot
=> x = 35 foot.