We have to reverse what was already done to the number 19, so we’ll multiply it by 3 to get 57. We then subtract 8 from it to get 49. Therefore, the original number is 49.
By direct calculation, we will see that the full price of each necktie is $29.
<h3>
How to find the complete price of each necktie?</h3>
Let's say that the full price of each necktie is f.
We know that Will each necktie costed $8 less than the full price, so he paid:
(f - $8) for each one.
Knowing that he bought 7 and paid a total of $147, we know that he paid:
$147/7 = $21
Then we need to solve:
(f - $8) = $21
Solving for f, we have:
f = $21 + $8 = $29.
So the full price of each necktie is $29.
If you want to learn more about algebra, you can read:
brainly.com/question/4344214
Answer:
Step-by-step explanation:
Q1
Q2
- b) sin = opposite/hypotenuse
Q3
- Cos A = 0.1908
- A = arccos 0.1908
- A = 79° ⇒ Option c)
Q4
- tan A = 16/19
- A = arctan 16/19
- A = 40° ⇒ Option b)
Use the tangent ratio here: tan(18) = x / 4...4 tan(18) = x, and x = 1.30
