Answer:
25/4 will have to be added to "complete the square"
Step-by-step explanation:
x² - 5x - 18 = 0
x² - 5x = 18
Find the half of the coefficient of x and square it
(5/2)² = 25/4
Add 25/4 to both sides to complete the square
x² - 5x + 25/4 = 18 + 25/4
x² - 5x + 25/4 = 18(4/4) + 25/4
x² - 5x + 25/4 = 72/4 + 25/4
x² - 5x + 25/4 = (72+25)/4
x² - 5x + 25/4 = 97/4
(x - 5/2)² = 97/4
Find the square root of both sides
√(x - 5/2)² = ±√97/4
x - 5/2 = √97/2
x = √97/2 + 5/2 or x = -√97/2 + 5/2
x = 7.42443 or -2.42443
5x=2x=35
7x=35
x=35/7
x=5
5x=25 girls
2x=10 boys
hope i helped you
Yes 8>-8 because 8 is negative
Answer:
64+52=116
64-52=12
Step-by-step explanation:
Brainliest plz took me like 10 minutes
Answer:
To distribute means to divide something or give a share or part of something. For example, for the problem <em>4</em><em>(</em><em>6</em><em>+</em><em>2</em><em>)</em>, you would use the distributive property and distribute the 4. Making the end result, <em>2</em><em>4</em><em>+</em><em>8</em>.
