X + y = -30
xy = 62
x + y = -30
- x - x
y = -x - 30
xy = 62
x(-x - 30) = 62
x(-x) - x(30) = 62
-x² - 30x = 62
- 62 - 62
-x² - 30x - 62 = 0
-1(x²) - 1(30x) - 1(62) = 0
-1(x² + 30x + 62) = 0
-1 -1
x² + 30x + 62 = 0
x = -(30) ± √((30)² - 4(1)(62))
2(1)
x = -30 ± √(900 - 248)
2
x = -30 ± √(652)
2
x = -30 ± 2√(163)
2
x = -15 ± √(163)
x = -15 ± 12.76
x = -15 + 12.76 or x = -15 - 12.76
x = -2.24 or x = -27.76
x + y = -30 or x + y = -30
-2.24 + y = -30 or -27.76 + y = -30
+ 2.24 + 2.24 + 27.76 + 27.76
y = -27.76 or y = -2.24
(x, y) = (-2.24, -27.76) or (x, y) = (-27.76, -2.24)
The two numbers that add up to -30 and multiply to 72 are -2.24 and -27.76.
36 hope this helps . And the decimal form is .36
Answer:
60 dollars I think
Step-by-step explanation:
Please mark brainlest
Hello!
This can be written below.
Since we are adding, our denominator will stay the same. When we combine our like terms we get our answer below.
I hope this helps!
To solve the expression, we must know about an expression.
<h2>Expression</h2>
In mathematics, an expression is defined as a set of numbers, variables, and mathematical operations that are formed according to rules which are dependent on the context.
The solution of the expression is 2a.
<h3>Given to us</h3>
<h2>Solution</h2>
Multiplying both we get,
Taking 4 as common from the numerator,
Canceling (a+1) from both numerator and denominator,
Expanding further,
Canceling 2 and a,
= 2a
Hence, the solution of the expression is 2a.
Learn more about Expression:
brainly.com/question/13947055