Answer:
A
Step-by-step explanation:
observe
x² + 12x + y² + 10y = –45
add 36 + 25 on both side
x² + 12x + 36 + y² + 10y + 25 = –45 + 36 + 25 = 16
(x + 6)² + (y + 5)² = 16
31.7 + 42.8 + 26.4 + x/4 = 39.1
Add up all the plain numbers on the left side:
100.9 + x/4 = 39.1
Subtract 100.9 from each side:
x/4 = 39.1
Multiply each side by 4:
<em>x = 156.4</em>
Answer:
x = 4(y + 6)/5
Step-by-step explanation:
2x - y = (3/4)x + 6
2x - (3/4)x = y + 6
(8x - 3x)/4 = y + 6
5x/4 = y + 6
5x = 4(y + 6)
5x = 4y + 24
x = (4y + 24)/5
Therefore, x = 4(y + 6)/5
6 years if you add the years up and look at the ages
Step-by-step explanation:
First, you divide the numerator and the denominator by 14. (Your fraction is 14 over $2.99.
Once you have that number, you need to simplify.
You get the number 1 over 0.2125 which can be rounded to 0.21. That being said, the unit rate would be be 1 : 0.21.
<u>Hope this helps!</u>
