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guapka [62]
2 years ago
11

Solve for j: j + j / 2 + J + 5 = 45

Mathematics
1 answer:
Georgia [21]2 years ago
5 0

Answer:

j:5j/2+5=45 Or j=16 how you put it was a little confusing

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Find the slope of the line that passes through (2, 12) and (5, 10).
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The right answer is -2/3

please see the attached picture for full solution

Hope it helps..

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Suppose you only have hundreds, ten's, and ones blocks. What are two different ways you could make the number 1,718
Viktor [21]
17 hundreds 1 ten 8 ones --- 17 hundreds 18 ones
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3 years ago
Solve for x.<br> 6x = - 48
gulaghasi [49]
The answer is x = -8
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3 years ago
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For the function​ below, find a formula for the upper sum obtained by dividing the interval [a comma b ][a,b] into n equal subin
Vlad [161]

Answer:

See below

Step-by-step explanation:

We start by dividing the interval [0,4] into n sub-intervals of length 4/n

[0,\displaystyle\frac{4}{n}],[\displaystyle\frac{4}{n},\displaystyle\frac{2*4}{n}],[\displaystyle\frac{2*4}{n},\displaystyle\frac{3*4}{n}],...,[\displaystyle\frac{(n-1)*4}{n},4]

Since f is increasing in the interval [0,4], the upper sum is obtained by evaluating f at the right end of each sub-interval multiplied by 4/n.

Geometrically, these are the areas of the rectangles whose height is f evaluated at the right end of the interval and base 4/n (see picture)

\displaystyle\frac{4}{n}f(\displaystyle\frac{1*4}{n})+\displaystyle\frac{4}{n}f(\displaystyle\frac{2*4}{n})+...+\displaystyle\frac{4}{n}f(\displaystyle\frac{n*4}{n})=\\\\=\displaystyle\frac{4}{n}((\displaystyle\frac{1*4}{n})^2+3+(\displaystyle\frac{2*4}{n})^2+3+...+(\displaystyle\frac{n*4}{n})^2+3)=\\\\\displaystyle\frac{4}{n}((1^2+2^2+...+n^2)\displaystyle\frac{4^2}{n^2}+3n)=\\\\\displaystyle\frac{4^3}{n^3}(1^2+2^2+...+n^2)+12

but  

1^2+2^2+...+n^2=\displaystyle\frac{n(n+1)(2n+1)}{6}

so the upper sum equals

\displaystyle\frac{4^3}{n^3}(1^2+2^2+...+n^2)+12=\displaystyle\frac{4^3}{n^3}\displaystyle\frac{n(n+1)(2n+1)}{6}+12=\\\\\displaystyle\frac{4^3}{6}(2+\displaystyle\frac{3}{n}+\displaystyle\frac{1}{n^2})+12

When n\rightarrow \infty both \displaystyle\frac{3}{n} and \displaystyle\frac{1}{n^2} tend to zero and the upper sum tends to

\displaystyle\frac{4^3}{3}+12=\displaystyle\frac{100}{3}

8 0
3 years ago
Is 6 a factor of 81 yes or no
topjm [15]
To test whether it's a factor:

-- Divide the big number by it.                  81 / 6  =  13.5 .

-- If the quotient is a whole number,
   then the small number is a factor
   of the big number.                                  13.5 is not a whole number.

-- If the quotient is not a whole number,
   then the small number is NOT a factor
   of the big number.                                        6 is NOT a factor of 81 .

8 0
3 years ago
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