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worty [1.4K]
2 years ago
12

How can systems of equations be used to represent situations and solve problems?

Mathematics
1 answer:
uysha [10]2 years ago
4 0

Answer:

To solve real world problems, we can use the relationship between the quantities and form equations which represent the situation given in the problem. Then, we can use these equations to solve the problems.

Step-by-step explanation:

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3•2•7=42•2=84
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Given the fu8nction f(x) = 2(x + 10), find x if f(x) = 24.<br><br> A) 68<br> B) 7<br> C) 17<br> D) 2
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Which angles are acute?<br>А в<br>H<br>Check all that apply.<br>​
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The answer is A and D.

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For each of the following functions, determine if they are injective. Also determine if theyare surjective. Also determine if th
timurjin [86]

Answer:

Check below

Step-by-step explanation:

1. Definition for intervals

(a,b)=\left \{ x\in\Re : a

2. Functions

1) \Re \rightarrow \Re \\ f(x)=x

Let's perform graph tests.

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2)\Re\geq0\rightarrow\Re , f(x)=x+1\\

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Injective: a horizontal line crosses the graph in one point.

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4)f:\Re\rightarrow\Re \:f(x)=ex

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5)  Quite unclear format

6) \:f:\Re\rightarrow(0,\infty), f(x) =ex

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7) f:\Re\geq 0 \rightarrow  \Re\geq0, f(x) =x^{4}

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8).f:\{-1,2,-3\}}\rightarrow \{1,4,9\}, f(x) =x^{2}

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Injective (one to one), Surjective,  and Bijective.

10) f:\Re\geq 0\rightarrow [-1,1], f(x)= cos(x)\\-1=cos(x) \therefore x=\pi,3\pi,5\pi,etc.

Surjective.

11.f:R\geq 0[-1,1], f(x) = 0\\

Surjective

12.f: US Citizens→Z, f(x) = the SSN of x.

General function

13.f: US Zip Codes→US States, f(x) = The state that x belongs to.

Surjective

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2 years ago
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8/12 is left
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