Answer:
A. 175 m
B. 20 cm
Step-by-step explanation:

x = 175 m

x = 20 cm
<u>Answer:</u>

<u>given:</u>
- adjacent side: 10
- hypotenuse side: 20
<u>using cosine rule:</u>




23.455 = 890 * (2x - 1) + 925x
23.455 = 1780x - 890 + 925x
23.455 = 2705x - 890
24.345 = 2705x
x = 9
Step-by-step explanation:
We apply the log rule that states that if there is a number multiplied by a log, the number becomes exponent of the argument of the log:
3 = log(8) + log(x^3)
Now we have sum of logs. Another property tells us that 2 logs with the same base a, that are added together, are equal to the log in base a of the product of the arguments:
3 = log(8x^3)
Now for definition of log:
10 ^ 3 = x^3
Therefore:
x = 10