Answer:
x = - 1
Step-by-step explanation:
Given
4x = x^2 - 5 Transfer 4x to the right side.
Solution
x^2 - 4x - 5 = 0 Factor
(x - 5)(x + 1)
You want the negative solution. That means that the middle sign must be plus.
x + 1 = 0 Subtract 10 from both sides
x = - 1 Ten on the left disappears by the subtraction process.
Is that correct?
4x = x^2 - 5
x = - 10
4*(-1) = (-1)^2 - 5
-4 = ? 1 - 5
-4 = - 4
and it does work.
Answer:
x = 58
Step-by-step explanation:
Angle = 1/2(difference of intercepted arcs)
51 = 1/2 ( 160 -x)
Multiply each side by 2
2*51 = 160-x
102 = 160-x
Subtract 160
102 -160 = -x
-58 = -x
58 =x
Answer:
Compound interest is the best.
Step-by-step explanation:
Simple interest is that which is not added to the initial capital once the term of the investment or credit has expired.
Compound interest is that which is added to the initial capital at the end of the investment or credit.
Simple interest:
I= C x i x t
15,000 * 0.05 * 5 = $ 750
Compound interest:
Cf= Ci (1+i)ᵗ
Cf = 15,000 * (1.039)^5 = $ 18,162.22
So, if Cf - Ci = I -> 3,162.22 is the compound interest.
8 cm and 9 cm is the correct answer
