Answer:
10 i think
Step-by-step explanation:
Answer:
math a app good luck with the question
Angle P is an Acute Angle
B :81 EXPLANATION
The angle with the greatest measure corresponds to the longest:
Since we know the three side lengths, we use the cosine rule to obtain;
{a}^{2} = {b}^{2} + {c}^{2} - 2bc \cos(A)
where a=21, b=18 and c=14
{21}^{2} = {18}^{2} + {14}^{2} - 2 \times 18 \times 14\cos(A)
44 1= 324+ 196 - 504\cos(A)
44 1= 520 - 504\cos(A)
44 1 - 520 = - 504\cos(A)
- 79 = - 504\cos(A)
\cos(A) = 0.1567
A = \cos ^{ - 1} (0.1567) = 80.98 \degree
Total price Tiffany pays for the basket of watermelons is $9.81
<u>Step-by-step explanation:</u>
Here we have , Tiffany buys a basket of watermelons on sale for $9 . The sales tax is %9, percent. We need to find what is the total price Tiffany pays for the basket of watermelons? . Since, Tiffany buys a basket of watermelons on sale with a price tag of $9 , she takes it ! Now, she goes in reception for billing , then its known to her that there is 9% tax ,so she pays an extra 9% amount of money of price i.e.
.
Therefore , Total amount of money Tiffany pays = $9 + $0.81 = $9.81
Total price Tiffany pays for the basket of watermelons is $9.81