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2 years ago

Which statement describes the first step to solve the equation by completing the square?

Mathematics

2 answers:

Readme [11.4K]2 years ago

6 0

Answer:

It's Multiply both sides of the equation by 1/2, I literally just took the quiz.

mart [117]2 years ago

5 0

Answer:

Your answer should be B

Step-by-step explanation:

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Determine whether set of values represents an inverse variation. If yes, identify the constant of variation and write an inverse

Natasha_Volkova [10]

SOLUTION

If the table represents an inverse variation, it means that y is inversely proportional to x, written as

$\begin{gathered} y\propto\frac{1}{x} \\ \propto is\text{ a sign of proportionality } \end{gathered}$

Removing the proportionality sign and introducing a constant k, we have

$\begin{gathered} y=k\times\frac{1}{x} \\ y=\frac{k}{x} \end{gathered}$

In the first column, we have x = -4 and y = 3.5. Substituting these values for x and y, we have

$\begin{gathered} y=\frac{k}{x} \\ 3.5=\frac{k}{-4} \\ k=3.5\times-4 \\ k=-14 \end{gathered}$

So, if it's an inverse variation, the relationship would be

$y=\frac{-14}{x}$

In the second column, x = -2 and y = 7.

Now lets substitute the value of x for -2. If we get y to be 7, then the relationship is an inverse variation

We have

$\begin{gathered} y=\frac{-14}{x} \\ y=\frac{-14}{-2} \\ y=7 \end{gathered}$

Since we got y = 7, the relationship is therefore an inverse variation.

The constant k = -14

The equation for the inverse variation is

$y=\frac{-14}{x}$

3 0

11 months ago

Fractions,decimals,percents 5/8= 0.625% 6.25% 62.5%

stepan [7]

Hello!

First of all, let's divide.

5/8=0.625

Now, to convert into a percent, you multiply by 100.

0.625(100)=62.5

Therefore, our answer is D) 62.5%

I hope this helps!

4 0

2 years ago

What is the length of DF?

uranmaximum [27]

Answer:

4a+6

Step-by-step explanation:

6 0

2 years ago

A triangular pyramid is formed from three right triangles as shown below.

juin [17]

Answer:

Step-by-step explanation:

RU=20 (45-45-90 triangle)

use pythagorean theorum

20^2+b^2=73^2

evaluate

b^2=4929

sq root both side

rounded to nearest integer, side SU is 70

8 0

2 years ago

A) how many 3/5s are in 1 b) use the answer to part A to find the number of 3/5s in 2

BabaBlast [244]

$a)\frac{1}{\frac{3}{5}}=1*\frac{5}{3}=\frac{5}{3}\\\\
There\ are\ 1\frac{2}{3}\ of\ \frac{3}{5}s\ in\ 1.\\\\
b)\frac{2}{\frac{3}{5}}=2*\frac{5}{3}=\frac{10}{3}\\\\There\ are\ 3\frac{1}{3}\ of\ \frac{3}{5}s\ in\ 2.$

5 0

3 years ago

Read 2 more answers