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3 years ago

What number must you add to complete the square?

2 answers:

8 0

X^2 + 2x = -1......take half of ur x term (2x), and square it. So we take half of 2, which is 1, and square it....1^2 = 1....so u would add 1 to both sides

nadezda [96]3 years ago

6 0

The correct answer is 1

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Use the distributive property to write the following expressions in expanded form.

Dmitry_Shevchenko [17]

Answer:

Step-by-step explanation:

a. 4x+4y

b. 8a+24b

c. 6x+33y

d. 63a+54b

e. 3ac+bc

f. 2xy+11yz

7 0

2 years ago

System of Equations Need help Trig

Yanka [14]

Looks like the system is

$\begin{cases}-2x+y+6z=1\\3x+2y+5z=16\\7x+3y-4z=11\end{cases}$

We can eliminate $y$ by taking

$(3x+2y+5z)-2(-2x+y+6z)=16-2(1)$

$\implies3x+2y+5z+4x-2y-12z=16-2$

$\implies7x-7z=14$

$\implies x-z=2$

so that $z=x-2$ , and

$(7x+3y-4z)-3(-2x+y+6z)=11-3(1)$

$\implies7x+3y-4z+6x-3y-18z=11-3$

$\implies13x-22z=8$

Substitute $z=x-2$ into this last equation and solve for $x$ :

$13x-22(x-2)=8$

$\implies13x-22x+44=8$

$\implies-9x=-36$

$\implies x=4$

Then

$z=x-2$

$\implies z=4-2$

$\implies z=2$

Plug these values into any one of the original equation to solve for $y$ :

$-2x+y+6z=1$

$\implies-2(4)+y+6(2)=1$

$\implies-8+y+12=1$

$\implies y=-3$

Hence the solution is x = 4, y = -3, and z = 2.

6 0

3 years ago

Fayzansabeel is a very brainly user!!!

wariber [46]

Answer:

oh ok.. can i get ur intro??

3 0

2 years ago

Read 2 more answers

Write the Equation of the line that is parralel to the linear equation in question 1 and passes through the point (3,7)

BlackZzzverrR [31]

Where’s question 1? And the question

4 0

2 years ago

Which fraction is equivalent to 38%? 3/8 9/25 19/50 3 4\5

KonstantinChe [14]

In order to find a fraction, We know that a percentage is out of a 100. This means we can now place our fraction as:

38/100

In order to find the actual fraction, we will want to simplify. Lets find our least common factor and work down from there. Since we know that 2 can go into both of them, lets reduce by 2.

This means our fraction will now look like:

19/50

Since 19 is a prime number and cannot be divided by anything but 1 and itself, we know that this is our simplified form.

This means:

19/50 is the fraction equivalent to 38%.

5 0

2 years ago

Read 2 more answers