What is 12,760,000 in scientific notation

Whats 5/9 / is dived

mamaluj [8]

Answer:

0.55555555

Step-by-step explanation:

7 0

3 years ago

How can you check the reasonableness of your solution

storchak [24]

You would basically go back and trace all your steps, that's what I do. And if your answer seems reasonable then you have the right answer but if your work doesn't match the answer than you've messed up. I hope I helped if I did like my answer and comment down below thx

6 0

4 years ago

I need help learning how to solve this problem please.

Radda [10]

we have 4 gals, Stephanie, Andrea, Emily and Becca.

btw the end point should be (-6, -7) and the start point is (8, 6).

so, if we know the distance between those two points, we can just cut it in 4 equal pieces and each gal will be driving a piece.

now, Emily's turn is after Andrea, BUT, we had first Stephenie driving ¼ of the way, then Andrea driving ¼ of the way too, but after ¼+¼, Emily comes on, but ¼+¼ is really 1/2, so when Emily starts, is really half-way through, or the midpoint of that distance.

$\bf ~~~~~~~~~~~~\textit{middle point of 2 points }
\\\\
\stackrel{\textit{Hometown}}{(\stackrel{x_1}{8}~,~\stackrel{y_1}{6})}\qquad
\stackrel{\textit{San Antonio}}{(\stackrel{x_2}{-6}~,~\stackrel{y_2}{-7})}
\qquad
\left(\cfrac{ x_2 + x_1}{2}~~~ ,~~~ \cfrac{ y_2 + y_1}{2} \right)
\\\\\\
\left( \cfrac{-6+8}{2}~~,~~\cfrac{-7+6}{2} \right)\implies \left(\cfrac{2}{2}~,~\cfrac{-1}{2} \right)\implies \stackrel{\textit{Emily starts off}}{\left(1~,-\frac{1}{2} \right)}$

Emily's turn ends ¼ of the way later, which will be pretty much half-way in between (1, -½) and (-6, -7), so is really the midpoint of those two.

$\bf ~~~~~~~~~~~~\textit{middle point of 2 points }
\\\\
(\stackrel{x_1}{1}~,~\stackrel{y_1}{-\frac{1}{2}})\qquad
\stackrel{\textit{San Antonio}}{(\stackrel{x_2}{-6}~,~\stackrel{y_2}{-7})}
\\\\\\
\left( \cfrac{-6+1}{2}~~,~~\cfrac{-7-\frac{1}{2}}{2} \right)\implies \left( \cfrac{-5}{2}~,~\cfrac{~\frac{-14-1}{2}~}{2} \right)\implies \left( \cfrac{-5}{2}~,~\cfrac{~\frac{-15}{2}~}{2} \right)
\\\\\\
\left( \cfrac{-5}{2}~,~\cfrac{-15}{4} \right)\implies \left( -2\frac{1}{2}~,~-3\frac{3}{4} \right)$

8 0

4 years ago

How to tell if a quadratic equation has a real solution?

attashe74 [19]

If the discriminant(b^2-4ac) is rational, then the quadratic is rational.

~ThePirc

4 0

3 years ago

Read 2 more answers

The number of cattle at a farm is 660. This is a 10% decrease in the number of cows, a 50% increase in the number of bulls, and

LuckyWell [14K]

let x = cows last year
 let y = bulls last year
 x + y = last years total
 0.9x + 1.5y = 660 (this year's total)
 1.1(x+y) = 660 = 1.1x + 1.1y = 660

so:
 0.9x + 1.5y = 1.1x + 1.1y
 subtract 0.9x from each side:
 1.5y = 0.2x + 1.1y
 subtract 1.1y from each side
 0.4y = 0.2x
 to make x 1 multiply both sides by 5
 2y = x
 substitute for x in one of the original problems:
 since they had 660 this year and that number is 10% higher than last year, then we had 600 total last year.

So:
 600 = x + y
 substitute into that one with the 2y = x
 600 = 2y + y
 600 = 3y
 200 = y
 then 600 - y = x
 so 600 - 200 = x
 400 = x

So you had 400 cows and 200 bulls last year

7 0

3 years ago