Answer:
C
Step-by-step explanation:
total cost=53.99+53.99×7/100=53.99+53.99×.07)=53.99(1+.07)=53.99(1.07)
C = 82.8°
<span>b = 27.5 </span>
<span>Here's the working in case you need to see it. </span>
<span>Using Law of Cosines to first find b: </span>
<span>b² = a² + c² - 2acCOS(B) </span>
<span>b² = (41)² + (20)² - 2(41)(20)COS(36) </span>
<span>b = about 27.5 </span>
<span>Now using Law of Sines to find A </span>
<span>sin(36) / (27.5 = sin(A) / (41) </span>
<span>sin(A) = 41sin36 / 27.5 </span>
<span>sin(A) = 0.876334376145 </span>
<span>A = SinInverse(0.876334376145) </span>
<span>A = about 61.2° </span>
<span>Now using 180-61.2-36 to find B = 82.8° </span>
<span>Have a good day! </span>
Answer:
$83.04
Step-by-step explanation:
1. Add up all the prices (49.99, 13,99, 13.99) = 77.97
2. Tax is 6.5% (.065 in decimal form)
3. Multiply 77.97 * .065 = 5.06805
4. 5.06805 rounds to 5.07
5. Add the total purchase (77.97) to the tax (5.07) = 83.04
You're expression is correct if it's asking for a number that is less than 7. But if the problem is asking for some number less than seven as in seven less some number, then it's 7-n. For example: 4 less than 7 is 7-4.
Hope this helps!
