Answer:
Step-by-step explanation:
Consider polynomial 
If x=-2 is its zero, then you can divide the polynomial 
by 
and get
If x=-1, then the polynomial can be rewritten as
The quadratic polynomial has roots
Then the polynomial has zeros
Answer:
she invested 6600 at 3% and 3400 at 2.5%
Step-by-step explanation:
Simple interest = amount deposited x time x interest rate
Let the amount deposited in in the account bearing 3% interest by represented with a
Let the amount deposited in in the account bearing 2.5% interest by represented with (10,000 - a)
a x 0.03 + (10,000 - a) x 0.025 = 283
0.03a + 250 - 0,025a = 283
collect like terms
0.03a - 0.025a = 283 - 250
0.005a = 33
a = 6600
the amount deposited in the 2.5% account = 1000 - 6600 = 3400
Answer:
Step-by-step explanation:
Use the distance formula between points to find all sides:
AB=
BC=
CA=
This is a 45° 45° 90° triangle, where two of the sides are equal and the other side is the first two sides times 
, so yes, it is a right triangle.
