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wolverine [178]
2 years ago
13

Who could help me please and thank you

Mathematics
1 answer:
frozen [14]2 years ago
5 0
They go (x,y) following along the graph
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Approximate <img src="https://tex.z-dn.net/?f=-8%20%2B%5Csqrt%7B20%7D" id="TexFormula1" title="-8 +\sqrt{20}" alt="-8 +\sqrt{20}
alisha [4.7K]

The value of the radical expression -8 + √20 when expanded and solved is -3.6, based on the given parameters

<h3>What are equivalent expressions?</h3>

Equivalent expressions are different expressions that have equal values when evaluated and compared

<h3>How to approximate the radical expression?</h3>

The expression is given as:

-8 + √20

The above expression is a radical expression

So, we start by doing the following

Express 20 as 5 * 4

-8 + √20 = -8 + √(5 * 4)

Split the radical expression √(5 * 4)

-8 + √20 = -8 + √5 * √4

Evaluate the square root of 4 i.e. √4 = 2

-8 + √20 = -8 + √5 * 2

This gives

-8 + √20 = -8 + 2√5

Evaluate the square root of 5

-8 + √20 = -8 + 2 * 2.2

Evaluate the product of 2 and 2.2

-8 + √20 = -8 + 4.4

Evaluate the difference

-8 + √20 = -3.6

Based on the given parameters, the value of the radical expression -8 + √20 when expanded and solved is -3.6

So, the complete equation is:

-8 + √20 = -3.6

Read more about equations at:

brainly.com/question/2972832

#SPJ1

5 0
1 year ago
There are 20 squares and 12 triangles. What is the simplest ratio of triangles to total shapes?
serious [3.7K]
3:8 is the answer ….
7 0
2 years ago
WhAt is the square root of 2 times the square root of 2
Papessa [141]

Answer:

2 is the answer

Step-by-step explanation:

its like

(square root 2)^2

{square root and whole square is cancelled and 2 is the answer}

3 0
3 years ago
Solve 4y-1=7 plz step by step
miv72 [106K]
Hi,

Here we are going to be working on isolating the variable y, and seeing what its value equates to.

To do this, we must try and get the variable y on one side of the equation by itself. 

Let's look at step one -

<em>4y - 1 = 7
</em>
We want to get rid of the 1 since we need to isolate x. We do this by doing the inverse of its operation. Since 1 is negative, if we add positive 1 to it - we will get 0, thereby being closer to isolating y.

However, when we do something on one side of the equation we must do it on the other. This means we will add 1 on both sides.

<em>4y - 1 + 1 = 7 + 1
</em>
<em>4y = 8
</em>
<em />Remember how I mentioned we do the inverse of the operation? In this case, 4 is multiplying y. The inverse operation of multiplication is division. So, to get rid of the 4 - we must divide 4y by 4, on both sides.

<em>4y / 4 = 8 / 4
</em>
<em>y = 2
</em>
We now know the variable y is equal to 2. 

Hopefully, this helps. 
3 0
3 years ago
Read 2 more answers
Expanding Logarithmic Expressions In Exercise, use the properties of logarithms to rewrite the expression as the sum, difference
kicyunya [14]

Answer:

\\ ln(x^2) - ln(x^2 + 1).

For values of x>0, it can be rewritten as \\ 2ln(x) - ln(x^2 + 1).

Step-by-step explanation:

For the expression:

\\ ln(\frac{x^2}{x^2 + 1})

We can apply this logarithmical property: \\ ln(\frac{x}{y}) = ln(x) - ln(y).

Then,

\\ \frac{x^2}{x^2 + 1} = ln(x^2) - ln(x^2 + 1).

If we assume values of <em>x </em>> 0 (non negative values for x), then the expression could be rewritten as follows:

\\ \frac{x^2}{x^2 + 1} = ln(x^2) - ln(x^2 + 1) = 2 ln(x) - ln(x^2 + 1), since \\ ln(x^{n}) = n*ln(x).

We have to remember that <em>domain</em> (all possible values x) for logarithmic function is for all x > 0, or mathematically expressed as:

Domain: \\ {x | x \in R, x > 0}

8 0
3 years ago
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