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ddd [48]
3 years ago
12

If 1/a + 1/b = 1/c, then c= ?

Mathematics
1 answer:
emmasim [6.3K]3 years ago
5 0

\dfrac{1}{a}+\dfrac{1}{b}=\dfrac{1}{c}|\cdot abc\\ bc+ac=ab\\ c(b+a)=ab\\ c=\dfrac{ab}{a+b}

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Help please idk what to do
stiks02 [169]

Step-by-step explanation:

solve the ineq first then plot on the number line so,

-2(4x + 5) ≤ 30

-8x - 10 ≤ 30

-8x ≤ 40

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therefore, option A is correct.

Topic: Inequalities

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4 0
3 years ago
About how many times larger is 6.14 x 10-3 than 1.98 x 10-4?
maxonik [38]

Answer:

About 3.7 times or 4 times.

Step-by-step explanation:

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6 0
4 years ago
Read 2 more answers
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Svetach [21]
Amber can make 6 cakes
4 0
3 years ago
Using the information given, select the correct ending balance.
klemol [59]

Step-by-step explanation:

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6 0
3 years ago
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jeyben [28]
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5 0
3 years ago
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