3 years ago

Evaluate the expression 3÷1 1/5+1/2

Mathematics

1 answer:

Soloha48 [4]3 years ago

8 0

61
----
110

The answer is 61 over 110, hope this helped you.

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kati45 [8]

B. 67
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3 years ago

Please Help!: 36x = $45.00

artcher [175]

45.00/ 36
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3 years ago

A long distance phone call between two cities costs $8.50 for 17 minutes. What is the rate in cents per minute?

Ira Lisetskai [31]

Answer:

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Step-by-step explanation:

8.50 divided by 17= 0.50

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3 years ago

For the function given below, find a formula for the riemann sum obtained by dividing the interval [a,b] into n equal subinter

Nata [24]

We split [2, 4] into $n$ subintervals of length $\dfrac{4-2}n=\dfrac2n$ ,

$[2,4]=\left[2,2+\dfrac2n\right]\cup\left[2+\dfrac2n,2+\dfrac4n\right]\cup\left[2+\dfrac4n,2+\dfrac6n\right]\cup\cdots\cup\left[2+\dfrac{2(n-1)}n,4\right]$

so that the right endpoints are given by the sequence

$x_i=2+\dfrac{2i}n=\dfrac{2(n+i)}n$

for $1\le i\le n$ . Then the Riemann sum approximating

$\displaystyle\int_2^42x\,\mathrm dx$

$\displaystyle\sum_{i=1}^nf(x_i)\dfrac{4-2}n=\frac8{n^2}\sum_{i=1}^n(n+i)=\frac8{n^2}\left(n^2+\frac{n(n+1)}2\right)=\frac{12n+4}n$

The integral is given exactly as $n\to\infty$ , for which we get

$\displaystyle\int_2^42x\,\mathrm dx=\lim_{n\to\infty}\frac{12n+4}n=12$

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3 years ago

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Answer:

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Step-by-step explanation:

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3 years ago

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