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Stella [2.4K]
3 years ago
13

If that is = a, find the value of a + 1 over a

1" title="3 - \sqrt{5} " alt="3 - \sqrt{5} " align="absmiddle" class="latex-formula">
​
Mathematics
1 answer:
Doss [256]3 years ago
6 0

Answer:

7+√5/4

Step-by-step explanation:

if that is = a, find the value of a + 1 over a

​Given that a = 3 - √5

a+1/1 = (3-√5)+1/3 - √5

4-√5/3 - √5

Rationalize

4-√5/3 - √5 * 3+√5/3 + √5

= 12 +4√5-3√5-√25/9-5

= 12+√5-5/4

= 7+√5/4

Hence the requred answer is  7+√5/4

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Let f(x)=ln(3x)+2.5 .
Cerrena [4.2K]
For this case what we should do is evaluate the function in each of the points from 2 to 7 and then find the average.
 We have then:
 f (x) = ln (3x) +2.5.
 f (2) = ln (3 * 2) + 2.5 = 4.291759469
 f (3) = ln (3 * 3) + 2.5 = 4.697224577
 f (4) = ln (3 * 4) + 2.5 = 4.98490665
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 f (6) = ln (3 * 6) + 2.5 = 5.390371758
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 nearest hundredth
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 Answer:
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Suppose y varies inversely with x, and y = 32 when x = 4. What is the value of y when x = 8?
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Answer:

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Step-by-step explanation:

Inverse variation is of the form

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