Answer:
f(- 2) = - 1
Step-by-step explanation:
To evaluate f(- 2) substitute x = - 2 into f(x) , that is
f(- 2) = 3 - (- 2)² = 3 - 4 = - 1
Let the fist integer be x, the second is x+20
the product of the numbers is:
x(x+20)
the sum of the numbers is:
x+x+20=2x+20
the sum of the above operations will give us:
2x+20+x^2+20x=95
x^2+22x+20=95
this can be written as quadratic to be:
x^2+22x-75=0
solving the above we get:
x=3 and x=-25
but since the integers should be positive, then x=3
the second number is x+20=3+20=23
hence the numbers are:
3 and 23
Answer:
I think he can get 24ft pieces of wood im not sure dont hold me to it im not very good at math but I think thats right if it isnt i am sorry
Answer:
B
Step-by-step explanation:
B
The formula for the area of a circle is Area = PI x r^2
Area = 3.142 x 11.2^2
Area = 394.13 square cm.
