That expression can’t be simplified and the answer is unknown. Finding what 3x+4y is impossible unless more information is provided.
Answer:
x=2 y= -3
Step-by-step explanation:
Answer:
Step-by-step explanation:
We can solve this system of equations by using elimination.
In this case, we can eliminate x by adding the two equations:
Then, substitute 7 for y to solve for x:
Substitute both these values into the system to check our answer:
Therefore the ordered pair is:
<h3>
Answer: <u>
100 ft</u>
is the hypotenuse</h3>
===================================================
Work Shown:
a = 60 and b = 80 are the two known sides
c is the unknown hypotenuse
Applying the pythagorean theorem gets us...
a^2 + b^2 = c^2
60^2 + 80^2 = c^2
3600 + 6400 = c^2
10,000 = c^2
c^2 = 10,000
c = sqrt(10,000)
c = 100
A quick way to see that 100 ft is the missing side is to note that a 6,8,10 right triangle scales up to 60,80,100 after multiplying all three sides by 10.
Or you could start with a 3,4,5 right triangle and multiply all three sides by 20.
