I Need help plz and thank you Solve each system using the elimination method.
4.6.1) 4a + 7b =1
-2a + 7b = -5
A. Subtract −+ -2a + 7b = -5 ab from the other equation so the b-terms become opposites. Then, rewrite the system so there are no parentheses.
→
B. Now, add the equations from Step A vertically.

C. Solve the equation in one variable for that variable.

D. Substitute the result from the previous step into 4a + 7b = 1 and simplify.

E. Write the solution for the system.

F. Check the solution with the original equation not used in Step D.

Arandom high school question but a hard one

The accompanying table shows the numbers of male and female students in a particular country who received bachelor's degrees in business in a recent year. complete parts (a) and (b) below. business degrees nonbusiness degrees total male 189131 634650 823781 female 169539 885329 1054868 total 358670 1519979 1878649 (a) find the probability that a randomly selected student is male, given that the student received a business degree. the probability that a randomly selected student is male, given that the student received a business degree, is nothing. (round to three decimal places as needed.) (b) find the probability that a randomly selected student received a business degree, given that the student is female. the probability that a randomly selected student received a business degree, given that the student is female, is nothing. (round to three decimal places as needed.)

Girardo is using the model below to solve the equation . girardo uses the following steps: step 1 add 4 negative x-tiles to both sides step 2 add 1 negative unit tile to both sides step 3 the solution is which step could be adjusted so that gerardo's final step results in a positive x-value? in step 1, he should have added 4 positive x-tiles to both sides. in step 1, he should have added 3 negative x-tiles to both sides. in step 2, he should have added 4 negative unit tiles to both sides. in step 2, he should have added 1 positive unit tile to both sides.