In δabc, if m `/_a` = m`/_c`, m`/_b` = ß (where ß is an acute angle), and bc = x, which expression gives the length of b, the side opposite `/_b` ? a. `sqrt(x^2 - 2x^2 cos beta)` b. `sqrt(x^2 - (1 - cos beta))` c. `sqrt(2x^2 (1 - cos beta)^2)` d. `sqrt(2x^2 (1 - cos beta))` plz ! 10

D. is the length of  b, the side opposite to .

Explanation:

According to the line of cosines, length of one side when opposite angle and two other sides are given.

c^2=a^2+b^2-2 ab cos C, where a,b, c are the sides of triangle while C is the opposite angle of side c.

Here, a=b=x(because ) , c= length of b (that is side AC) and

Thus,  

Therefore,  length of b =

the final amount you will pay is $68.04.

the tip is determined by the pre-tax amount, so we calculate the tip based on the original bill, not after we've added sales tax.

to find the tip:

we can divide 54.00 by 100 to get 1% of 54. then we multiply that by 18.

54 / 100 = .54

.54 x 18 = 9.72

tip = 9.72$

to find the tax:

we can divide 54.00 by 100 to get 1% of 54. then we can multiply that by 8 to get 8%.

54 / 100 = .54

.54 x 8 = 4.32

tax= 4.32

now we can add the tip and tax to the bill to get our total.

54 + 9.72 + 4.32 = 68.04

total: $68.04

step-by-step explanation:

d no solution

step-by-step explanation: