Answer:
Step-by-step explanation:
By geometric mean theorem and Pythagoras theorem:
Answer:
y = 5x + 4
Step-by-step explanation:
Starting with 5x - y = -4
Subtract 5x from both sides to get -y = -5x - 4
Multiply the entire equation by -1 to make the y positive
You get y = 5x + 4
Answer:
2nd
Step-by-step explanation:
using the quadric formula
do the math and you get the second one.
{-1/3,5/2}
Answer: 35.88
Step-by-step explanation: So if something is marked up by 8.7% it means, it is 108.7% of the original number.
So we can convert 108.7% to a decimal by dividing 108.7 by 100, which equals 1.087.
So if we want to find the original number, all we have to do is divide 39 by 1.087.
This will give us 35.88 as the original number rounded to the nearest tenth.