Answer:
9,200
Step-by-step explanation:
Answer:
20078/243
Step-by-step explanation:
sn = a1-a1r^n/1-r
sn = a1 * 1-r^n/1-r
s7 = 6 * 1 - (-5/3)^7/1-(-5/3)
s7 = 6 * 10039/729
s7 = 6 * 10039/243*3
s7 = 2 * 10039/243
s7 = 20078/243
Answer:
6. <em>47</em>
7. –25
8. <em>15</em>
9. <em>–</em><em>33</em>
10. <em>–</em><em>9</em>
Step-by-step explanation:
Substitute.
6. x=-7
y = -8x - 9
= -8(-7)-9
= 56-9
y=47
7. x=2
y= -8x-9
= -8(2)-9
= -16-9
y= -25
8. x=-3
y= -8x-9
= -8(-3)-9
=24-9
y= 15
9. x=3
y= -8x-9
= -8(3)-9
= -24-9
y= -33
10. x=0
y= -8x-9
= -8(0)-9
= 0-9
y= -9
Answer: 5
<u>Step-by-step explanation:</u>
f(5) = 2 means that when x = 5, y = 2 --> (5, 2)
f⁻¹(2) is the inverse (when the x and y are swapped) --> when x = 2, y = 5
<h2>Linear Inequality</h2>
<em>In </em><em>mathematics a linear inequality</em><em> is an </em><em>inequality involving a linear function</em><em>. </em><em>A linear inequality contains one of the inequality symbols.< is less than > is greater than ≤ is less than or equal to ≥ is greater than or equal to ≠ is not equal to.</em>
<h3>x²− 9x < − 8</h3>
<em>Let's find the critical points of the inequality.</em>
<h3>x² − 9x = − 8</h3>
<em>x² − 9x −(−8) = − 8 −(−8)</em> (Subtract -8 from both sides)
<h3>x² − 9x + 8 = 0</h3>
<em>(x − 1)(x − 8) = 0</em> (Factor left side of equation)
<em>x − 1 = 0 or x − 8 = 0</em> (Set factors equal to 0)
<h3>x=1 or x=8</h3><h3>
Check intervals in between critical points. (Test values in the intervals to see if they work.)</h3>
<em>x < 1</em> (Doesn't work in original inequality)
<em>1 < x < 8</em> (Works in original inequality)
<em>x > 8</em> (Doesn't work in original inequality)
<h3>
Answer:</h3><h2>
1 < x < 8</h2>
<em>The third option is the correct one.</em>
<em />
<h2>See more at:</h2><h3>
brainly.com/question/14338402</h3>