What is the scientific notation for 6.782 x 10-4

Mathematics

1 answer:

Fynjy0 [20]3 years ago

6 0

Answer:

that is already in scientific notation

Step-by-step explanation:

if you are asking for what's the actual number, then it's 0.000678

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A student wants to conduct an experiment to see how quickly information can travel. On Day 1 of the experiment, the student tell

Aliun [14]

3 people know a fact in 1st day.
In 2nd day they share it with 3 people each=3×3
Now 3×3 people shares it with 3 people each. and so on...
So,
3+3²+3³+3⁴+3^5+3^6+3^7
=3279 no of people altogether , will hear from 1st day to 7th day...
On the day 7,no of people who will hear the fact=3^7=2187

7 0

3 years ago

Write the slope intercept for 2x - 5y = -5

xxMikexx [17]

Answer:

the slope is $\frac{2}{5}$ and the y-intercept is $1$

Step-by-step explanation:

if we can get it to $y=mx+b$ form, then it's easy since the slope is $m$ and the y-intercept is $b$

solve $2x-5y=-5$ for $y$

$2x-5y=-5$

minus 2x from both sides

$-5y=-2x-5$

divide by -5 both sides

$5y=\frac{2}{5}x+1$

match

$m=\frac{2}{5}$ and $b=1$

the slope is $\frac{2}{5}$ and the y-intercept is $1$

8 0

3 years ago

Read 2 more answers

Write an equation of the line that passes through (18, 2) and is parallel to the line 3y−x=−12

miskamm [114]

keeping in mind that parallel lines have the same exact slope, hmmmm what's the slope of the line above anyway?

$\bf 3y-x=-12\implies 3y=x-12\implies y=\cfrac{x-12}{3}\implies y = \cfrac{x}{3}-\cfrac{12}{3} \\\\\\ y = \stackrel{\stackrel{m}{\downarrow }}{\cfrac{1}{3}}x-4\qquad \impliedby \begin{array}{|c|ll} \cline{1-1} slope-intercept~form\\ \cline{1-1} \\ y=\underset{y-intercept}{\stackrel{slope\qquad }{\stackrel{\downarrow }{m}x+\underset{\uparrow }{b}}} \\\\ \cline{1-1} \end{array}$

so we're really looking for the equation of a line whose slope is 1/3 and runs through (18,2)

$\bf (\stackrel{x_1}{18}~,~\stackrel{y_1}{2})~\hspace{10em} \stackrel{slope}{m}\implies \cfrac{1}{3} \\\\\\ \begin{array}{|c|ll} \cline{1-1} \textit{point-slope form}\\ \cline{1-1} \\ y-y_1=m(x-x_1) \\\\ \cline{1-1} \end{array}\implies y-\stackrel{y_1}{2}=\stackrel{m}{\cfrac{1}{3}}(x-\stackrel{x_1}{18}) \\\\\\ y-2=\cfrac{1}{3}x-6\implies y=\cfrac{1}{3}x-4$