X = y + 11
2x + y = -2
2(y + 11) + y = -2
2y + 22 + y = -2
3y + 22 = -2
3y = -24
y = -8
x = y + 11
x = -8 + 11
x = 3
Solution set {3, -8} (C)
Answer:
24
Step-by-step explanation:
(-3)(-8)
A negative times a negative is a positive
+ 3*8
+ 24
27/8
try the internet, it helps
<h3>
Answer: Choice C. (2x - 6i)(x + 3i)</h3>
Work Shown:
2x^2 + 18
2(x^2 + 9)
2(x - 3i)(x + 3i) .... see note below
(2x - 6i)(x + 3i)
Note: I used the rule that a^2 + b^2 = (a - bi)(a + bi). I recommend FOILing out the right hand side to confirm the equation is true. You'll use the idea that i^2 = -1.
The equivalent expression to 11^-7 × 11^5 is one over eleven raised to the second power. option A
Exponential
11^-7 × 11^5
= 11^(-7+5)
= 11^(-2)
= 1 / 11²
Options:
one over eleven raised to the second power
(1/11)²
one over eleven raised to the power of negative two
(1/11)^-2
11^2
−11^2
Therefore, the equivalent expression to 11^-7 × 11^5 is one over eleven raised to the second power.
Learn more about exponential:
brainly.com/question/27161222
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