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maria [59]
3 years ago
10

Please help explanation if possible

Mathematics
2 answers:
harina [27]3 years ago
7 0

Answer:

y = 0.45x

Step-by-step explanation:

After 2 secs can ring 2 × 0.45

After 3 secs can ring 3 × 0.45

After 4 secs can ring 4 × 0.45 , then

After x secs can ring y = x × 0.45 = 0.45x , that is

y = 0.45x

JulijaS [17]3 years ago
3 0

\Large \colorbox{red}{  \sf\color{white}{Aиswεr : }}

Sudden uncontrollable fear or anxiety, often causing wildly unthinking behaviour.

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Which of the following describes the following graph?
pychu [463]

<u>Answer:</u>

The correct answer option is B. both a function and a relation.

<u>Step-by-step explanation:</u>

We are given a from from which we can see that for each input we have exactly one output.

This means that we have a function because each element in the domain is matched with exactly one element in the range.

It is also a relation since each input related to the out put in some way.

Therefore, the correct answer option is B. both a function and a relation,

8 0
4 years ago
If x2 + mx + m is a perfect-square trinomial, which equation must be true?
noname [10]
<h2>Hello!</h2>

The answer is:

The third option,

x^{2}+mx+m=(x+2)^{2}

<h2>Why?</h2>

We are looking for an equation that establishes a relationship between the perfect-square trinomial and the givens notable products.

So, we are looking for a notable product that gives us a value of "m" that is the coefficient of the linear term (x) and it's also the constant term.

- Trying with the two first options, we have:

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

We can see that for these first two options, the value of m has not the same value for the coefficient of the linear term and the constant term since m is equal 2 and the constant number is not 2.

- Trying with the third option, we have:

(x+2)^{2}=x^{2}+2*(2*x)+2^{2}=x^{2} +4x+4

Now, we can see that the value of m is the same for the coefficient of the linear term and the constant term, we can see that m is equal to 4.

So, the correct option is the third option, because

m=4

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Have a nice day!

4 0
4 years ago
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Step-by-step explanation:

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On a coordinate plane, parallelogram A B C D is shown. Point A is at (negative 3, negative 1), point B is at (7, 9), point C is
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Answer: HOPE THIS HELPSS!!! please mark me brainliestt

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