There are 12 months, 7/12 have 31 days. You would have a 7/12 probability of choosing one with 31 days if it is random.
Answer:
If the roots of an equation are x = -1 ± i, it means that the factorized form of that equation is: (x + 1 + i)(x+ 1 - i) = 0.
Using the distributive property, we have:
(x + 1 + i)(x+ 1 - i) = x^2 + x - ix + x + 1 - i + ix + i + 1
Combining like-terms and simplifying:
⇒ x^2 + x + x + 1 + 1 = x^2 + 2x + 2 = 0
Therefore, the stament is correct. If the roots of an equation are x = -1 ± i, then the equation is: x^2 + 2x + 2 = 0.
Answer:
c. 25/100
Step-by-step explanation:
The given fraction is 1/4.
Here we need to find the equivalent to 1/4.
It c. 25/100
Let me explain.
Multiply 1/4 by 25 both the numerator and the denominator.
1/4 *25/25 = 1*25 / 4*25
= 25/100
All other fractions are not equivalent to 1/4
Answer: c. 25/100
Thank you.
Answer:
x = -4
Step-by-step explanation:
2x² + 8x = x² - 16
x² + 8x + 16 = 0
x² + 4x + 4x + 16 = 0
x(x + 4) + 4(x + 4) = 0
(x + 4)² = 0
x = -4
Answer
Substitute w by 7
7^3
7x7x7 =343
