Solve for x. √x+20=9

Please show and explain all steps so I can better understand :)thx

Answer:

Step-by-step explanation:

We have been given that that v varies directly as g.

We can represent this information in an equation as:

First of all, we will find constant of variation (k) by substituting and in our given equation.

So our equation would be .

Now, we will substitute   in the given equation:

Therefore, the value of v is 99.

We want to graph the ordered pairs for the given line and domain.

The graph can be seen at the end of the answer.

Here we have the line:

y = 2*x + 4

And the domain x= {-2, 1, 2}

To get the ordered pairs, we just need to evaluate the line in the given values of x, we get:

for x = -2

y = 2*-2 + 4 = 0

The ordered pair is (-2, 0)

for x = 1

y = 2*1 + 4 = 6

The ordered pair is (1, 6)

for x = 2

y = 2*2 + 4 = 8

The ordered pair is (2, 8)

Now we just graph these points, as you can see below.

If you want to learn more, you can read:

brainly.com/question/20853486

He needs to buy 7 boxes of carpet squares.

What is unitary method?

The unitary method is a technique for solving a problem by first finding the value of a single unit, and then finding the necessary value by multiplying the single unit value.

Total number of carpets Mr. Cullenneed =91 carpet squares

Total number of carpets Mr. Cullen have= 49 carpet squares.

number of carpets Mr. Cullen need to complete

=91 - 49

= 42 carpets squares

So, Mr. Cullen needs 42 carpets squares.

If each carpet is sold in making boxes of 6. He needs

=42/6

=7 boxes

Hence, He needs to buy 7 boxes of carpet squares.

Learn more about this concept here:

brainly.com/question/16290024

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