Answer:
13. b. 4 + 5x = 29; $5.
14. c. 74 + w = 3w + 6; 34 pounds.
15. b. $42.5.
Step-by-step explanation:
13. 4 + 5x = 29
5x = 29-4 = 25
x = 5.
14. 74 + w = 3w + 6
68 = 2w
w = 34.
15. Let x be the money he got last year. Then:
2x + 5 = 90
2x = 85
x = $42.5.
Answer:
a
Step-by-step explanation:
Answer:
C: isolate the x squared by using inverse operations
Step-by-step explanation:
This method of solving quadratic equation is used when there is only x² term and no x term. Thus;
For example, we have a quadratic equation;
x² - 1 = 80
To solve this by square root method, the first step we have to take is to isolate the x² term by inverse operation which is by addition of 1 to both sides to get rid of the -1 on the left side so that x² can be isolated.
Answer:
-9 and 2
Step-by-step explanation:
-9 x 2
