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1 answer:
The domain of a(x) is all of R. The domain of b is the range where 
. We can calculate the composition boa by changing in the expression for b, every x with a(x). Hence, boa(x)=
=
. Again for a function with a root to be defined, we need that the expression under the square root has to be positive. Hence, 3x-3
0.Thus, the set where this holds is 
. This is also the domain of the function boa(x).
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Use the quadratic formula, x=
(don't know how to type the "-"sign in the formula, so there is only the "+" in the formula)
in this case, a=1, c=34, b is unknown
from the roots, we can tell that -b+
=2(5+3i)=10+6i
Note: the original equation already give b as -b, so -(-b)=10, b=10
using b^2-4ac=(6I)^2,
b^2-4*34=-36
b^2=100
you will also get b=10
(don't know how to type the "-"sign in the formula, so there is only the "+" in the formula)
in this case, a=1, c=34, b is unknown
from the roots, we can tell that -b+
Note: the original equation already give b as -b, so -(-b)=10, b=10
using b^2-4ac=(6I)^2,
b^2-4*34=-36
b^2=100
you will also get b=10
Answer:
Mrs. Duggin walked a total of .
Step-by-step explanation:
Given:
Number of miles walked on each day =
Number of days she walked = 7
We need to find the Total miles she walked using repeated addition method.
Solution:
Now we know that Repeated Addition means adding each group together and it is also known as Multiplication.
So we can Find Total miles she walked by adding Number of miles walked on each day with number of day times.
OR
we can Find Total miles she walked by Multiplying Number of miles walked on each day with number of days.
framing in equation form we get;
Total miles she walked =
OR
Total miles she walked =
Hence Mrs. Duggin walked a total of .