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olga_2 [115]
3 years ago
5

If using the method of completing the square to solve the quadratic equation

Mathematics
1 answer:
hram777 [196]3 years ago
4 0
Add 20 to complete the square

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Select all expressions that are equivalent to 5n-30
mamaluj [8]

Answer: everything EXCEPT 5(n-30)

Step-by-step explanation:

8 0
2 years ago
An unknown number w is 30 more than an unknown number p. The number w is also p less than 5
AleksandrR [38]
The problem statement gives rise to two equations.
  w = 30 + p . . . . . w is 30 more than p
  w = 5 - p . . . . . .. w is p less than 5

Add these two equations to get
  2w = 35
  w = 35/2 = 17.5
  p = 5 - w = -12.5

The unknown number w is 17.5.
The unknown number p is -12.5.
7 0
3 years ago
How many solutions does the equation have?<br><br> 2x + 3 = 4x + 2
fenix001 [56]
Well, solve for x.

Combine like terms by performing the opposite operation of subtracting 4x on both sides of the equation

The 4x's will cross out on the right

4x - 4x = 0x = 0

On the left:

2x - 4x = -2x

Now the equation looks like:

-2x + 3 = 2

Continue to combine like terms by subtracting 3 on both sides of the equation

On the left:

3 - 3 = 0

On the right:

2 - 3 = -1

Equation:

-2x = -1

Isolate x by performing the opposite operation of dividing -2 on both sides of the equation

On the left:

-2x ÷ -2 = 1

On the right:

-1 ÷ -2 = 1/2

x= 1/2

So, there is only one solution: 1/2
8 0
3 years ago
Read 2 more answers
If f(x)=81, what is x?
Allushta [10]

Answer:

There's not enough information...

7 0
2 years ago
write an equation in slope intercept form satisfying the given equation : The line passes through (3,-8) and is parallel to the
nordsb [41]
Slope of the given line = 4
slope of the req. line = 4
equation of the line
y - y1 = m(x - x1)
y + 8 = 4(x - 3)
y + 8 = 4x - 12
4x - y - 12 - 8 = 0
4x - y - 20 = 0
8 0
3 years ago
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