9514 1404 393
Answer:
(x, y) = (5, 3)
Step-by-step explanation:
We can use the second equation to substitute for y in the first.
x = 17 -4(x -2)
5x = 25 . . . . . . . . eliminate parentheses, add 4x
x = 5
y = 5 -2 = 3
The solution is (x, y) = (5, 3).
Answer:
<h2>$406.67</h2>
Step-by-step explanation:
Notice how the price increased $160 from 12 bales to 18 bales, the difference between these is 6. From 18 to 22 is 4. Dividing 160 by 6:
$16.67
And multiplying that by 4 gives us:
$106.67
<h2>So, 22 bales would cost $406.67</h2>
Assuming you are talk about a quadratic with y=-x^2-6x-13
Domain is all reals
Answer:
angle y
Step-by-step explanation:
angles w, x, and z are all equal to 73 degrees. Angle y is 107 degrees.
Answer:
Step-by-step explanation:
Let older brother age be x and the age difference between the brothers be y
Younger brother's current age = x - y
When older brother's age was at x - y, younger brother's age was x - 2y = 2
When young brother's age will be at x, older brother's age will be x + y = 20
Subtracting the first equation from the second: 3y = 18
y = 6
x = 14
So the older brother is 14 and the younger brother is 8.
Sum of three son's ages now = 15 + 11 + 7 = 33
Daddy's age now = 45
Age difference = 12
Each year, daddy's age goes up by 1 while the sum of three son's ages goes up by 3.
Dividing the age difference by the difference in age gain, 12 / (3 -1) = 12 / 2
= 6
So in 6 years when daddy is 51 and the sum of sons at 21, 17 and 13 will be equal.