In triangle abc, ma=35, mb=40, and a=9. which equation should you solve for b?
a. sin35/b=sin40/9
b. sin35/9=sin40/b
c. cos35/9=cos40/b
d. b sqaure=9 square-2(9)bcos40

  B.  sin35/9=sin40/b

Step-by-step explanation:

The law of sines tells you ...

  sin(A)/a = sin(B)/b

Filling in the given values, you get ...

  sin(35°)/9 = sin(40°)/b

B.

Step-by-step explanation:

We are given that in a triangle ABC.

a=9

We have to find an equation  which solve for b

We know that a sine law

Using above formula of sine law

Substituting all given values in the above formula of sine law

Then we get

By cross multiply then we get

Using division property of equality

Using division property of equality

Hence, option B is true option for solving b.

B.

15%

step-by-step explanation:

use the table and count the number of guesses that has two correct answers.

the following are two correct answers

10010, 01100, 11000

a total of 3 numbers having 2 correct guesses out of 20 questions.

probability of getting 2 correct guesses = the number of questions getting 2 correct answers / total number of questions.

= 3/20

to convert it into percent multiply by 100, we get

= 3/20 * 100

= 15%

the answer is 15%

you.