Answer:
k = 4
Step-by-step explanation:
In order for the claim to be true, (x-3) must be a factor of each of the terms in the first expression. That is, you must have that expression factor as ...
(x -3)(2x +5) +(x -3)(x +7)
Factoring out (x -3), we get ...
= (x -3)(2x +5 +x +7) = (x -3)(3x +12)
= 3(x -3)(x +4)
The value of k must be 4.
Answer:
k = 13
Step-by-step explanation:
20 ^ k / 20^4 = 20^9
knowing the laws of exponents, diving two numbers of the same base with exponents is like subtracting the exponents, so
k^x / k^y
= k ^ (x - y)
apply that knowledge here
20 ^ k / 20 ^ 4 = 20 ^ 9
20 ^ ( k - 4 ) = 20 ^ 9
now the bases have no use here so ignore them, and just calculate the exponents
k - 4 = 9
solve using inverse operations
k - 4 = 9
+4 +4
k = 13
Answer:
x=2
Step-by-step explanation:
2^2=4
2+2=4
Answer:
47.5! Ask if you wanna know how exactly i got this and the formulas!
Step-by-step explanation:
3 x 5 = 15
<em>15 / 2 = 7.5</em>
<em>5 x 5 = 25</em>
14 - 8 = 6
6 x 5 = 30
<em>30/2 = 15</em>
<em></em>
<em>7.5 + 25 + 15 = 47.5</em>
Answer:
i'd like to say that the correct answer is the one at the very bottom; y=x+3
