Answer:
a)<em> k(x) = 5x - 2</em>
x = 5(y) - 2
5y = x + 2
y = (x+2)/5
<u>k-¹(x) = (x+2)/5</u>
b) <em>h</em><em>(</em><em>x</em><em>)</em><em> </em><em>=</em><em> </em><em>(</em><em>x</em><em>+</em><em>1</em><em>0</em><em>)</em><em>/</em><em>(</em><em>x</em><em>-</em><em>3</em><em>)</em><em> </em>
x = (y+10)/(y-3)
x(y-3) = y + 10
xy -3x = y + 10
xy - y = 3x + 10
y(x-1) = 3x + 10
y = (3x + 10)/(x-1)
<u>h-¹(x) = (3x+10)/(x-1)</u>
Answer:
1/2
Step-by-step explanation:
slope is rise over run. Choose two points on the line that are whole numbers. Then put the rise (1) over run (2)
Answer:
87 degrees
Step-by-step explanation:
"Without using a calculator" suggests you are supposed to have memorized the square roots of 2 and 3 to at least 3 decimal places. That is, you know
21. √8 = √(2²·2) = 2√2 ≈ 2.83 . . . . about 4/5 of the distance between 2 and 3
22. √75 = √(5²·3) = 5√3 ≈ 8.66 . . . about 2/3 of the distance between 8 and 9
Since they both have the same variables, just add the numbers and get 13. So therefore it is 13x
