1) 19.25
2) 12.92
3) 25.20
4) 19.68
5) 77.05
6)81.67
Answer:
20x + 15 = 11
Step-by-step explanation:
First you need to add the like terms:
-7+2=-5
Now you need to expand the brackets:
-5*-4x=20x
-5*-3=15
Now you have 20x + 15 = 11. So if you want you can rearrange the formule to find x.
20x=-4
x= -5
Answer:
image
Step-by-step explanation:
hope it's correct or helpful in some way
Answer: 3 and 12
<u>Step-by-step explanation:</u>
Let x represent one of the numbers and y represent the other number. Then,
Sum: x + y = 15 → y = 15 - x
Product: xy = 36
Use substitution method by replacing "y" with "15 - x" in the second equation, then solve for x:
x(15 - x) = 36
15x - x² = 36
0 = x² - 15x + 36
0 = (x - 3)(x - 12)
0 = x - 3 and 0 = x - 12
x = 3 x = 12
Identity property of zero states that the sum of 0 and any number is that number.
