Answer:
Answer = X= 3
Step-by-step explanation:
Let's solve your equation step-by-step.
5x − 3 = 12
Step 1: Add 3 to both sides.
5x − 3 + 3 = 12 + 3
5x = 15
Step 2: Divide both sides by 5.
5x/5 = 15/5
Answer = X= 3
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His average rate is 120 meters per minute.
Answer:
1. x² + 3x - 5 = 0
2. x² - x = 3 x + 7
4. 7x² + 14x = 0
Step-by-step explanation:
A Quadratic equation takes the form;
ax² + bx + c = 0
a, b, c are constants and a cannot be 0.
Options 1 fits this;
x² + 3x - 5 = 0
Option 2 fits this as well;
x² - x = 3 x + 7
x² -x - 3x - 7 = 0
x² - 4x - 7 = 0
Option 4 fits this as well if c = 0.
7x² + 14x + 0 = 0
Multiply the number of minutes in an hour(60) by 4.5
