Answer: x = 17
Step-by-step explanation:
2+x = 2x-15
subtract x on both sides
2 = x -15
add 15 to both sides
17 = x
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17+2 = 2(17)-15
19 = 34 -15
19 = 19
Parentheses- parentheses first (in order left to right if there's multiple)
Without- PEMDAS
Hello!
You solve inequalities just like equations by using inverse operations.
8x/8<120/8
x<15
16x/16>-100/16
x>-6.25
-5x/-5>80/-5
x>-16
x+20-20≤75-20
x≤55
x-15+15≥225+15
x≥240
x+130-130≤530-130
x≤400
I hope this helps!
Answer:
A logarithm is just an exponent. To be specific, the logarithm of a number x to a base b is just the exponent you put onto b to make the result equal x. For instance, since 5² = 25, we know that 2 (the power) is the logarithm of 25 to base 5. Symbolically, log5(25) = 2.log(a/b) = log a -log b, a > 0, b > 0. log an = n (log a) (Logarithm of a power). logx y = logmy / logmx (Change of base rule).The natural numbers 1, 2, 3,......are respectively the logarithms of 10, 100, 1000, to the base 10. The logarithm of "0" and negative numbers are not defined.The laws apply to logarithms of any base but the same base must be used throughout a calculation. This law tells us how to add two logarithms together. Adding log A and log B results in the logarithm of the product of A and B, that is log AB.
I am not sure on this one but I think it may be like 6 years. I will try to find a better answer ... I have not seen any question like this one ... I tryed to answer it on a sheet of paper but I cant seem to get it ... I am so sorry if I cant help ... <3
