Answer:
2
Step-by-step explanation:
instead of x they put a
so your finding x
First:
-5=-3x
-5/3=x
Not this one, because x is not -5/3
Second:
2x+3y=9
2x=9/2x
X=2.25
Y=-x+2
y-2=-x
-y+2=x
The fourth one
If you would like to know how many gallons of paint will Henry need to paint his living room, you can calculate this using the following steps:
the ceiling: 24 ft * 18 ft = 432 ft squared
walls: 2 * 24 ft * 9 ft + 2 * 18 ft * 9 ft = 2 * 24 * 9 + 2 * 18 * 9 = 432 + 324 = 756 ft squared
432 ft squared + 756 ft squared = 1188 ft squared
1 gallon of paint ... 450 ft squared
x gallons of paint = ? ... 1188 ft squared
1 * 1188 = 450 * x
1188 = 450 * x /450
x = 1188 / 450
x = 2.64 gallons of paint
The correct result would be 2.64 gallons of paint.
O(30) is the 30th odd number as well as 2(30) - 1 = 60 - 1 = 59
A and D are correct.
<u>Given </u><u>:</u><u>-</u>
- A function f(x) = - (x -17)/12
<u>To </u><u>Find</u><u> </u><u>:</u><u>-</u>
- The inverse of the function .
<u>Solution</u><u> </u><u>:</u><u>-</u>
The given function is ,
f(x) = -(x-17)/12
Replace y with f(x) ,
y = -(x-17)/12
Interchange x and y ,
x = -(y-17)/12
Solve for y ,
12x = -y +17
y = -12x +17
Replace y with f-¹(x) ,
![\longrightarrow\sf \ f^{-1}(x)= -12x +17](https://tex.z-dn.net/?f=%5Clongrightarrow%5Csf%20%5C%20f%5E%7B-1%7D%28x%29%3D%20-12x%20%2B17)
<u>Hence </u><u>the</u><u> required</u><u> answer</u><u> is</u><u> </u><u>-12x </u><u>+</u><u>1</u><u>7</u><u>.</u>