Use the diagram to derive the law of cosines, Fill in the missing statements in the derivation
B
a
1) a² = h²42
2) h2=
3) 2 = 12 + (6 - 3)2
4) 2 =h²4
5) 2 = 02 - y2 + b2 - 2bx +32
6) 2 = Q² +62
7) x = acosc
8) c2 = + b22abcosc
h
x
b-x
С
A
DONE

2-digit numbers less than 91 which are 1 less than a multiple of 10

Manny bought 12 pounds of vegetables at the supermarket. 75% of the vegetables were on sale. how many pounds of vegetables were not on sale? 98 points : )

Jada has a meal in a restaurant she adds up the prices listed on the menu for everything they ordered and gets a subtotal of $42.00. when the check comes, it says they also need to pay $3.99 in sales tax. what percentage of the subtotal is the sales tax