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shepuryov [24]
4 years ago
11

I have no clue why it is making me do this

Mathematics
1 answer:
Citrus2011 [14]4 years ago
6 0

Answer:

Option B) The simplification performed in step 2 is invalid or incorrect

The value of w in the given expression is -54

Step-by-step explanation:

Option B) The simplification performed in step 2 is invalid or incorrect

The corrected steps are given below :

GIven expression is w+xy+3x^2=2 and x=2y

To find w when y=-2 :

Step 1: I first substitute y=-2 into x=2y yielding x=2(-2)

Step2: I simplify the expression resulting in x=-4

Step3: I substitute x=-4 and y=-2 into the given expression w+xy+3x^2=2 we get

w+(-4)(-2)+3(-4)^2=2

Step 4: I use order of operations to simplify and get

w+8+3(16)=2

w=2-56

Therefore w=-54

The value of w in the given expression is -54

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Solve 2x2 + x − 4 = 0. x2 + x + = 0
Ksenya-84 [330]

Answer:

The Quadratic Polynomial is

2 x² +x -4=0

Using the Determinant method to find the roots of this equation

x=\frac{-1\pm \sqrt{1^2-4*2*(-4)}}{2\times 2}\\\\ x=\frac{-1 \pm \sqrt{32}}{4}{\text{Using the formula}}x=\frac{-b\pm\sqrt{D}}{2a}, {\text{where}},D=b^2-4 ac

For, the Quadratic equation , ax²+ b x+c=0

(b) x²+x=0

x × (x+1)=0

x=0  ∧ x+1=0

x=0     ∧   x= -1

You can look the problem in other way

the two Quadratic polynomials are

2 x²+x-4=0, ∧ x²+x=0

x²= -x

So, 2 x²+x-4=0,

→ -2 x+x-4=0

→ -x -4=0

→x= -4

∨

x² +x² +x-4=0

x²+0-4=0→→x²+x=0

→x²=4

x=√4

x=2 ∧ x=-2

As, you will put these values into the equation, you will find that these values does not satisfy both the equations.

So, there is no solution.

You can solve these two equation graphically also.

3 0
4 years ago
Read 2 more answers
8/6 +(-9/5) what will I add together first
Kamila [148]

Answer:

- 14/30

Step-by-step explanation:

Step 1:

8/6 + ( - 9/5 )      Equation

Step 2:

40/30 - 54/30      Convert

Answer:

- 14/30     Subtract

Hope This Helps :)

8 0
3 years ago
Use the net to find the lateral area of the cylinder.
ioda
The lateral area is the area around, the bases are the circles so the lateral area is the area of the rectangle

we just need the legnth of the rectangle which is the circumfernece of the circle

C=pid
d=12
C=12pi

area=lw
aera=12pi*15
area=180pi yd^2
4 0
4 years ago
Read 2 more answers
What dose 2/6 + 3/6 =
meriva

Answer:

5/6 is ur answer

5 0
3 years ago
Read 2 more answers
There are 6 squares and 2 circles. What is the simplest ratio of circles to total shapes?
Sunny_sXe [5.5K]

Add to find the total number of shapes.

6 + 2 = 8

Circles to total amount of shapes -> 2:8

Divide 2 to both sides.

2/2:8/2

1:4

Therefore, the answer is 1:4

Best of Luck!

4 0
4 years ago
Read 2 more answers
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