Answer:
4y+3
Step-by-step explanation:
Answer:
total cost = 351.33
Step-by-step explanation:
The tax is found by multiply the cost times the tax rate
tax = 334.60 * .05
tax =16.73
Add the tax to the cost of the item to get the total cost
total cost = 16.73 + 334.60
total cost = 351.33
Area: 64 in.
Perimeter: 102 in.
Answer:
<h2>x =
-2+i√5 and -2i-√5</h2>
Step-by-step explanation:
The general form of a quadratic equation is ax²+bx+c = 0
Given the quadratic equation x²+4x+9=0 in its standard form, on comparing with the general equation we can get the value of the constant a, b and c as shown;
ax² = x²
a = 1
bx = 4x
b = 4
c = 9
The quadratic formula is given as x = -b±√(b²-4ac)/2a
Substituting the constant;
x = -4±√(4²-4(1)(9))/2(1)
x = -4 ±√(16-36)/2
x = -4±√-20/2
x = -4±(√-1*√20)/2
Note that √-1 = i
x = -4±(i√4*5)/2
x = (-4±i2√5)/2
x = -4/2±i2√5/2
x = -2±i√5
The solution to the quadratic equation are -2+i√5 and -2i-√5
The product of five and FOUR is twenty.
