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Zinaida [17]
3 years ago
6

In a recent year, there was about 400,000,000 mobile internet users. ( look at the picture )​

Mathematics
2 answers:
STatiana [176]3 years ago
8 0
3 times as many or 3:1
AVprozaik [17]3 years ago
7 0

\bf 400,000,000\implies 4\times 10^8 \\\\[-0.35em] ~\dotfill\\\\ \cfrac{\textit{desktop users}}{\textit{mobile users}}\qquad \qquad \cfrac{1.2\times 10^9}{4\times 10^8}\implies \cfrac{12\times 10^8}{4\times 10^8}\implies \cfrac{12}{4}\times\cfrac{10^8}{10^8}\implies \cfrac{3}{1}

3 : 1, or 3 to 1, thus 3 times as many.

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Step-by-step explanation: to answer this question I need to know what 1 inch to a mile is. like    every one inch= 12 miles

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Suppose that it snows in Greenland an average of once every 20 days, and when it does, glaciers have a 28% chance of growing. Wh
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Lucas wants to make a bigger pencil holder. 5 cubes wide, 12 cubes long, 3 cubes high and 1 cube thick. How many cubes were used
dybincka [34]

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6 0
2 years ago
Please help with this Calculus questions
Triss [41]

Answer:

\int_{0}^{1}\left( - \frac{3 u^{9}}{2} + \frac{2 u^{4}}{5} + 2 \right)du=\frac{193}{100}=1.93.

Step-by-step explanation:

To find \int_{0}^{1}\left( - \frac{3 u^{9}}{2} + \frac{2 u^{4}}{5} + 2 \right)du.

First, calculate the corresponding indefinite integral:

Integrate term by term:

\int{\left(- \frac{3 u^{9}}{2} + \frac{2 u^{4}}{5} + 2\right)d u}} =\int{2 d u} + \int{\frac{2 u^{4}}{5} d u} - \int{\frac{3 u^{9}}{2} d u}

Apply the constant rule \int c\, du = c u

\int{2 d u}} + \int{\frac{2 u^{4}}{5} d u} - \int{\frac{3 u^{9}}{2} d u} = {\left(2 u\right)} + \int{\frac{2 u^{4}}{5} d u} - \int{\frac{3 u^{9}}{2} d u}

Apply the constant multiple rule \int c f{\left(u \right)}\, du = c \int f{\left(u \right)}\, du

2 u - {\int{\frac{3 u^{9}}{2} d u}} + \int{\frac{2 u^{4}}{5} d u} = 2 u - {\left(\frac{3}{2} \int{u^{9} d u}\right)} + \left(\frac{2}{5} \int{u^{4} d u}\right)

Apply the power rule \int u^{n}\, du = \frac{u^{n + 1}}{n + 1}

2 u - \frac{3}{2} {\int{u^{9} d u}} + \frac{2}{5} {\int{u^{4} d u}}=2 u - \frac{3}{2} {\frac{u^{1 + 9}}{1 + 9}}+ \frac{2}{5}{\frac{u^{1 + 4}}{1 + 4}}

Therefore,

\int{\left(- \frac{3 u^{9}}{2} + \frac{2 u^{4}}{5} + 2\right)d u} = - \frac{3 u^{10}}{20} + \frac{2 u^{5}}{25} + 2 u = \frac{u}{100} \left(- 15 u^{9} + 8 u^{4} + 200\right)

According to the Fundamental Theorem of Calculus, \int_a^b F(x) dx=f(b)-f(a), so just evaluate the integral at the endpoints, and that's the answer.

\left(\frac{u}{100} \left(- 15 u^{9} + 8 u^{4} + 200\right)\right)|_{\left(u=1\right)}=\frac{193}{100}

\left(\frac{u}{100} \left(- 15 u^{9} + 8 u^{4} + 200\right)\right)|_{\left(u=0\right)}=0

\int_{0}^{1}\left( - \frac{3 u^{9}}{2} + \frac{2 u^{4}}{5} + 2 \right)du=\left(\frac{u}{100} \left(- 15 u^{9} + 8 u^{4} + 200\right)\right)|_{\left(u=1\right)}-\left(\frac{u}{100} \left(- 15 u^{9} + 8 u^{4} + 200\right)\right)|_{\left(u=0\right)}=\frac{193}{100}

6 0
3 years ago
Can someone help and explain this to me,if you do it means a lot :)
erma4kov [3.2K]

Answer:

0 zero

Step-by-step explanation:

you must find gf(x) first

g[ f(x) ] = g [ 2 + 1 ]

= 3-2+x which is you sub fx tu g

g [ f (-1) ] = 3-2-1

=0

6 0
3 years ago
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