Thank you for posting you question here at brainly. I hope the answer will help you. The <span> practical domain and the practical range for this situation is below:
</span>D: [5, 7]
<span>R: [58, 81.2]
</span>
Feel free to ask more questions here at brainly. I'd be happy to answer.
17^2 because the equation for it is a^2+b^2=c^2 so the longest side (x) is the c so 10 i put as a and 7 i put as b. it will always be squared for pythagorean theorem so the equation will look like 10^2+7^2=17^2 and if it isn’t squared all you have to do is undo the squaring
f(x) = 
In this exponential function , the base is 
if base is less than 1 then it a decreasing function
We can verify it using a table
We plug in some x and values and find out f(x) to get point for the graph
x -----> f(x)
-1 -----> 2
0 ------> 1
1 -------> 0.5
The table is same as the points in first graph.
So first graph represents the graph of f(x) = 
Answer: a) For 20X1 = 7.50; 20X2= 7.50
b) For 20X1 = 5.50; 20X2= 6.00
Step-by-step explanation:
Explanation is attached.
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1cm *10 = 10km
40cm * 10 = 400 km
50km/50 = 1cm
400km/50 = 8cm
A: 8cm