Answer:
x = -5
Step-by-step explanation:
0.2x-8=0.4x-7
First, add 8 to both sides.
0.2x-8+8=0.4x-7+8
0.2x=0.4x-1
Next, subtract 0.4x from both sides.
0.2x-0.4x=0.4x-1-0.4x
-0.2x=1
Divide both sides by -0.2:
-0.2x/-0.2=1/-0.2
x=-5
I wish I can help but I’m bad at this sorry!
It has given you that to earn $85 in one week. Kim could earn $8 per hour babysitting and $15 per hour for yard work with work time limited to 8 hours per week. Now we have to represent the variable X is the numbers of hours spent doing babysitting in the week. And Y represents the number of hours spent doing yard work in the week. The equation representing the condition on the total number of hours to be worked is: x+y= 8. The equation relating the number of hours working at each job toward the fund- raising goal is: 8x+ 15y= 85 and your final answer should be x= 5
Answer:
Step-by-step explanation:
3=$2.91
22=x
3x=64.02
x=21.34
The correct order to express cos3x in terms of cosx is; As shown in steps 1 to 9 below.
<h3>How to simplify Trigonometric Identities?</h3>
The steps to simplify the trigonometric identities cos 3x in terms of cos x are as follows;
Step 1; cos x = cos(2x + x)
Step 2; cos(2x) cosx - sin(2x) sinx
Step 3; 1 - 2sin^2x(cosx) -(2sinxcosx)sinx
Step 4; cosx - 2sin²x cosx - 2sin²x cosx
Step 5; cosx - 4sin²x cosx
Step 6; cosx( 1 - 4sin²x)
Step 7; cosx{1 - 4(1 - cos²x)}
Step 8; cosx{-3 + 4cos²x}
Step 9; 4cos³x - 3cosx
Read more about Trigonometric Identities at; brainly.com/question/7331447
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