Answer:
(The solved portion if needed) 
Step-by-step explanation:
Let us break down each portion of the phrase: The sum of twice a number and 9 is -25.
The first important part is "The sum". This means that the next two listed numbers (Or expressions) will be added together
Next is, "A number and 9". "A Number" is just an unknown variable. We can just name this x. "And 9" shows the other number that is being added.
At this point we have 
The next is, "is -25". Is means equals, so this part would be 
Now we can put these two parts together to get
*I'm not certain whether you need to solve it afterwards, so I'll do that here*
Answer:
5ft
explanation:
9ft - 4ft = 5ft
Answer:
x=-2
y=-10
Step-by-step explanation:
x+y=-12
x-y=8
x=y+8
(y+8)+y=-12
2y+8=-12
2y=-20
y=-10
x+10=8
x=-2
Split it in half it’s 8 bro.........
<h2>Steps:</h2>
(Let x = greater number and y = lesser number)
So this question is asking us for a system of equations. Using the info they provide, we can form these two equations:
So for this, we will be using the substitution method. Since we know that x = y + 7, substitute x with (y + 7) in the second equation as such:
From here we can solve for y. Firstly, distribute 3 so that it multiplies with y and 7:
Next, subtract 3y on both sides of the equation:
Lastly, subtract 5 on both sides of the equation:
Now that we know the value of y, we can substitute it into either equation to solve for x:
<h2>Answer:</h2>
<u>In short, 16 is the lesser number and 23 is the greater number.</u>
