A child standing 15 feet from the base of a lamppost casts a shadow 5 feet long. If the child is 4 feet tall and walks towards t
he lamppost at a speed of 10 feet per minute, at what rate, in feet per minute, will the length of his shadow be changing?
1 answer:
You might be interested in
Let y = 0 to find the zeros.
We can now split the middle term into factors of 6 that add up to 5.
Group the first two terms, and group the last two terms, and factorise.
Group like terms.
Now, we know that in order for a zero to occur, either x + 3 = 0 or x + 2 = 0.
Hence, x = -3 and -2 are the zeros in this quadratic.
We can now split the middle term into factors of 6 that add up to 5.
Group the first two terms, and group the last two terms, and factorise.
Group like terms.
Now, we know that in order for a zero to occur, either x + 3 = 0 or x + 2 = 0.
Hence, x = -3 and -2 are the zeros in this quadratic.