Describe and correct the error in solving for one of the variables in the linear system 4x + 5y = -10 and 2x – 4y = 9.
Х
X
Step 1 4x + 5y = -10
2x - 4y = 9
Step 2 (Multiply by 2.)
4x + 5y = -10
4x - 8y = 18
Step 3 -3y = 8
y = -
3
8

7. d. 64

8. i. 32

9. c. 125

10. j. none of the above

11. d. 81

12. i. 216

13. e. none of the above

14. g. 240

15. e. none of the above

16. g. 32

17.   e. none of the above

30 miles

step-by-step explanation:

we know that 60 seconds equals 1 minute and 60 minutes 1 hour

44 ft       60 sec     60 min     158400   ft

  *   *   =

1 sec       1 min       1 hour         hour

we know that there are 5280 ft per mile

158400   ft       1 mile         30 miles

  *   =

1   hour               5280 ft     1 hour

so in 1 hour   it can travel 30 miles

7,24

step-by-step explanation: