Since, Ladder makes an angle 60
∘
with the floor as shown in figure.
∴ ladder makes 120
∘
angle with the positive direction of x-axis.
⇒ slope of ladder =tan120
∘
=tan(90
∘
+30
∘
)=−cot30
∘
=−
3
Answer: The required markup percentage is 60%.
So, first Andre is starting with 100 dollars in his savings account. Every week, he adds 5 dollars. And Elena starts with 10 dollars and adds 20 dollars per week.
1. Solve what Andre did.
$5 multiplied by 4 weeks = $20. So, $100 + $20 = $120.
2. Solve what Elena did.
$20 × 4 weeks = $80. $10 from her savings account + $80 = $90
3. So, Andre has more money because he started with $100, which is lots of money. And Elena only started with $10. So, Andre has $30 more than Elena.
4. For Part B, you have to count how many weeks in order for both of them to have the same amount of money left in their savings account.
5. Since Andre gets $5 a week, he can get at least 2 weeks and get $130. And for Elena, she would have to do 2 weeks also. For now she has $90, but for two weeks would be $130.
Answer for Part B: Each of them would have to do 2 weeks to get the same amount. (Which is 4 weeks)
Answer:
Solving the equation 
we get 
Step-by-step explanation:
We need to find the value of n in the given equation
The equation can be simplified by using multiplication and division rules.
The first step is to solve brackets.
Then, Divide both sides by 247.2
Now, divide both sides by 30
We get the value of n: n=0.10582
So, solving the equation we get
Because X is opposite of the 38° angle and 35 is adjacent to the 38° angle, you would use tan. To set up the equation you would put X over 35 and set an equal to 38(tan). Then you would multiply both sides by 35 to cancel out the 35 on the bottom of the X. When you multiply 38(tan) by 35, you get X equals 27.
