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ladessa [460]
4 years ago
7

What number solves this propoetion? 2.4/m=3/4.5

Mathematics
1 answer:
antoniya [11.8K]4 years ago
7 0
\frac { 2.4 }{ m } =\frac { 3 }{ 4.5 } \\ \\ \frac { 4.5 }{ 3 } \cdot m\cdot \frac { 2.4 }{ m } =\frac { 3 }{ 4.5 } \cdot m\cdot \frac { 4.5 }{ 3 } \\ \\ m=\frac { \left( 4.5 \right) \left( 2.4 \right)  }{ 3 } \\ \\ m=\frac { \left( 4+\frac { 1 }{ 2 }  \right) \left( 2+\frac { 2 }{ 5 }  \right)  }{ 3 }

\\ \\ m=\frac { 8+\frac { 8 }{ 5 } +1+\frac { 2 }{ 10 }  }{ 3 } \\ \\ m=\frac { 9+\frac { 16 }{ 10 } +\frac { 2 }{ 10 }  }{ 3 } \\ \\ m=\frac { \frac { 90 }{ 10 } +\frac { 18 }{ 10 }  }{ 3 }

\\ \\ m=\frac { \frac { 108 }{ 10 }  }{ 3 } \\ \\ m=\frac { 108 }{ 10 } \cdot \frac { 1 }{ 3 } \\ \\ m=\frac { 108 }{ 30 } \\ \\ m=\frac { 3\cdot 36 }{ 3\cdot 10 } \\ \\ m=\frac { 36 }{ 10 } \\ \\ m=3.6
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You have a fractions, so the only thing you must be sure of is that the denominator is not zero.

In your case, the denominator is given by the function <span><span>f<span>(w)</span></span>=3<span>w9</span></span>. You need to find out the values of w for which <span><span>f<span>(w)</span></span>=0</span>. You have
<span><span>f<span>(w)</span></span>=0⇔3<span>w9</span>=0⇔<span>w9</span>=0⇔w<span>=9</span><span>√0</span>=0</span>

So, your only problem is <span>w=0</span>, and all other numbers are fine.

Your domain is thus given by the set <span>{x∈R∣x≠0}</span>

The domain can also be written as <span><span>(−∞,0)</span>∪<span>(0,+∞)</span></span>.

7 0
4 years ago
Help math pls due in 5 min
antiseptic1488 [7]

Answer:

A.

Step-by-step explanation:

Q1 = 4.6

Q2 = 5.5

Q3 = 5.95

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Illusion [34]

Answer :

a + 1/4b

6/a + b/4

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b/2 + 4

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5a - 6

Step-by-step explanation:

5a - 6 = 9

b/2 + 4 = 8

ab - 17 = 7

6/a + b/4 = 4

b + 1/a = 8.5

a + 1/4b = 3.03125

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3 years ago
What is the radius and diameter of the following circle?
siniylev [52]

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Step-by-step explanation:

Where's the circle?

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