Answer: Ok for the first two they are true.
Step-by-step explanation: So how you would do this is simple, so for # 2 2x-5=11 (x) represents a number and you have to find it. So For this one put an eight in the x's place and that makes 2(8)-5=11 so when you see 2x that mean 2 times what ever x is. so 2x8=16, 16-5 =11.
S(x) = x - 7; t(x) = 4x² - x + 3
(t · s)(x) = (4x² - x + 3)(x - 7) = (4x²)(x) + (4x²)(-7) - (x)(x) - (x)(-7) + (3)(x) + (3)(-7)
= 4x³ - 28x² - x² + 7x + 3x - 21 = 4x³ - 29x² + 10x - 21
If you would like to know how much money did they collect in total, you can calculate this using the following steps:<span>
Travis ... t = $43
Jessica ... j
Robin ... r
120% of j is t
120% * j = 43
120/100 * j = 43
j = 43 * 100 / 120
j = $35.83
r = 135% of t = 135% * 43 = 135/100 * 43
= $58.05
t + j + r = $43 + $35.83 + $58.05 = $136.88</span>
<span>The correct result would be C. $136.88.</span>
Answer:
cos(3x) --> cos³(x) - 3sin²(x)cos(x)
Step-by-step explanation:
The text in pink are the trig identities I used to convert cos(2x) and sin(2x) into their other equivalent forms.
This question is pretty much asking if you know how to use your trig identities if i understand it correctly.
