Answer: 72.8
explanation: a^2+b^2=c^2
18^2+b^2=75^2
18^2=324
75^2=5625
324+b^2=5625
-324 -324
b^2=5301
take the square root of both sides
√b^2=√5301
b=72.807966
so b=72.80
Answer: 35 and 27
Step-by-step explanation:
We can solve this by using a system of equations
x will be the first number while y will be the second
![x+y=62](https://tex.z-dn.net/?f=x%2By%3D62)
This equation means the two numbers will add to get 62
![x-y=8](https://tex.z-dn.net/?f=x-y%3D8)
This equation means when subtracted the two numbers will have the difference of 8.
Now I will solve by elimination
![x+y=62\\\\+x-y=8\\2x=70](https://tex.z-dn.net/?f=x%2By%3D62%5C%5C%5C%5C%2Bx-y%3D8%5C%5C2x%3D70)
When adding the two equations why was eliminated so now we can find the value of x
![2x=70\\\frac{2x}{2} =\frac{70}{2} \\x=35](https://tex.z-dn.net/?f=2x%3D70%5C%5C%5Cfrac%7B2x%7D%7B2%7D%20%3D%5Cfrac%7B70%7D%7B2%7D%20%5C%5Cx%3D35)
Now sub in x into one of the original equations to find the value of y
![35+y=62\\35-35+y=62-35\\y=27](https://tex.z-dn.net/?f=35%2By%3D62%5C%5C35-35%2By%3D62-35%5C%5Cy%3D27)
Divide both sides by -2, giving you y= -1+1/5x. The slope would be 1/5
Sal: 25 +5x = 240
Divide 5 from both sides so it would be 5+ x=240/5
Subtract 5 from both sides x=48-5
X= 43
Elena: 15 + 5x=300
Divide 5 from both sides so it would be 3 +x=300/5
Subtract 15 from both sides x=60-3
X=57
So Sal jogged for 43 minutes. While Elena jogged for 57 minutes
Answer:
Step-by-step explanation: ok so what equation has a 6 in it and the sum is 16? Figure that out then you get your answer