What is the solution of the system of equations? -5x+2y=9 3x+5y=7

Step-by-step explanation:

The value of x is -1 and value of y is 2

Step-by-step explanation:

This is a simultaneous equation and we can use the elimination method to solve it

-5x+2y=9 eqn 1

3x+5y=7  eqn 2

Multiply equation 1 by 3 and eqn 2 by 5, the we will have

(-5x+2y=9) × 3

(3x+5y=7) × 5

-15x+6y=27 eqn 3

15x+25y=35 eqn 4

Add eqn 3 and 4 together and we will have

31y = 62

Divide both sides by 31 and we will have

y = 2

substitute 2 for y in any equation, but let us pick equation 1

-5x + 2(2) = 9

-5x + 4 = 9

-5x = 9 - 4

-5x = 5

Therefore x = -1

the answer is 510

step-by-step explanation:

15 • 13 = 195

15 • 12 = 180

15 • 5 = 75

12 • 5 = 60

195 + 180 = 375

375 + 75 = 450

450 + 60 = 510

answer: a. 13/44

step-by-step explanation: judging by the information given to us, we are looking for experimental probability. we can see that 13 males have chosen chocolate ice cream. there are 44 ice creams in total (remember that the total is always the denominator). so our answer is 13/44.