Answer:
10.2 ft
Step-by-step explanation:
![a^{2} +b^{2} = c^{2} \\8^{2} +b^{2} =13^{2} \\](https://tex.z-dn.net/?f=a%5E%7B2%7D%20%2Bb%5E%7B2%7D%20%3D%20c%5E%7B2%7D%20%5C%5C8%5E%7B2%7D%20%2Bb%5E%7B2%7D%20%3D13%5E%7B2%7D%20%5C%5C)
64 +
= 169
![b^{2} = 105\\](https://tex.z-dn.net/?f=b%5E%7B2%7D%20%3D%20105%5C%5C)
b=![\sqrt{105}](https://tex.z-dn.net/?f=%5Csqrt%7B105%7D)
b= 10.2469
F(5) = 5² +4*5=25+20 = 45
g(6) = 2*6 +2 =12+2=14
f(5) + g(6)= 45 +14 =59
Answer:
A. n
Step-by-step explanation:
n/4 + n/4 + n/4 + n/4 = 4n/4 = n
Answer:
39. r = 13.4
40. m = 12
Step-by-step explanation:
39. Given the equation,
, to solve for r, the following are the correct steps to take to arrive at the solution:
(given)
Add 0.8 to both sides of the equation (addition property of equality)
(this is where the error occurred.)
![r = 13.4](https://tex.z-dn.net/?f=%20r%20%3D%2013.4%20)
40. The correct steps to take in solving the equation,
is as follows:
(given)
Multiply both sides by 3 (multiplication property of equality)
![3*-\frac{m}{3} = 3*(-4)](https://tex.z-dn.net/?f=%203%2A-%5Cfrac%7Bm%7D%7B3%7D%20%3D%203%2A%28-4%29%20)
(this is where the error occurred. This is what we should have at this line/step)
(dividing both sides by -1)