Answer:
4k - 8
Step-by-step explanation:
Lucy is k years old so we know k is an important part of this problem.
Sister 1 is 3 years younger, so she is k - 3 years old.
Sister 2 is 5 years less than twice Lucy's age therefore, she is 2k (twice Lucy's age) - 5 years old.
Now we have: k + (k - 3) + (2k - 5)
We can simplify like terms with the k's and get 4k. then we add (-3) and (-5) to get 4k - 8.
Hope this helps!
Answer:
(x + 1)(x + 4)
Step-by-step explanation:
We want to factor x² + 5x +4 into two binomial factors. Note that 1*4 = 4 and that 1 + 4 = 5, so:
y = x² + 5x +4 = (x + 1)(x + 4)
Answer:
irrational
Step-by-step explanation:
-(9x+12)=-8x-(x+3)
-9x-12= -8x-x-3
-9x+9x=9
-9
if u look at the eq for x it has no value. but if u r asking a solution for a eq then it is -9
Due to length restrictions, we kindly invite to read the explanation of this question to learn more on power properties.
<h3>How to understand power properties</h3>
Herein we must explain some properties of power expressions with integer exponents. A power of the form aᵇ is a product of the form a × a × a × a × ... × a, where a is repeated b times. a and b are the base and the exponent of the power.
First, we proceed to demonstrate that a⁰ = a:
a⁰ Given
a¹ ⁻ ¹ Existence of the additive inverse / Modulative property
a¹ · a⁻¹ Multiplication of powers of equal base
a¹ · (a¹)⁻¹ Power of a power / (- a) · b = - a · b
1 Existence of multiplicative inverse / Modulative property / Result
By definition of power, we find that a¹ as a is only only time.
To learn more on power properties: brainly.com/question/2499975
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