Answer:
a = 4
Step-by-step explanation:
Here, we want to write and solve the given equation
a - 2.5 = 1.5
a = 2.5 + 1.5
a = 4
To check, we simply substitute a = 4
That would be;
4-2.5 = 1.5
This is correct
This is easy to do because you can factor
example
6/2=3 because 6=2*3 so 6/2=3/1 times 2/2 or 3
2x^3+17x^2+23x-42 can be factored out to equal
(x-1)(x+6)(2x+7)
so [(x-1)(x+6)(2x+7)]/(2x+7)=[(x-1)(x+6)] times (2x+7)/(2x+7)=(x-1)(x+6)=x^2+5x-6
the answer is (x-1)(x+6) or x^2+5x-6
Answer:
= -0.5 + 1.5i
Step-by-step explanation:
Given 3+i divided by -2i ⇒
By multiplying the numerator and the denominator by the conjugate of (-2i) which will be equal (2i)
So, =
We should know that: i = √(-1) ⇒ i² = -1
∴
∴ = -0.5 + 1.5i
Answer: (Choice 1)
Step-by-step explanation: