Select all that apply, 7th grade math
2 answers:
You might be interested in
The given question can be solve using quadratic formula.
The correct option is (c) .
Given:
The given equation is,
---------------------------(1)
Write the general quadratic equation.
Write the quadratic formula.
------------------------------- (2)
Compare equation (1) and (2).
Substitute the value of ,
and
in general quadratic.
Subtract from each side of above equation.
Thus, the correct option is (c) .
Learn more about quadratic equation here:
(A)
we are given
(-1.15) x 3.2
Since, sign of 1.15 is negative
and sign of 3.2 is positive
so, we put negative sign in front
now, we can multiply them
and we get
.............Answer
(B)
Suppose, we are given product of two numbers 'a' and 'b'
so, we use this property
case-1: When both positive , then we put positive in front
case-2: When both negative , then we put positive in front
case-3: When first is negative and second is positive , then we put negative in front
case-4: When first is positive and second is negative , then we put negative in front