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3 years ago

What is the number in standard form? 5.708 • 10^-8 Drag the answer into the box to match the number. 100 POINTS!!! HELP ME!!!

Mathematics

2 answers:

Juli2301 [7.4K]3 years ago

7 0

Answer:

$\Huge \boxed{0.00000005708}$

$\rule[225]{225}{2}$

Step-by-step explanation:

$5.708 \cdot 10^{-8}$

Solving for exponent and evaluating:

$\displaystyle 5.708 \cdot \frac{1}{10^8 }$

$\displaystyle \frac{5.708}{10^8 }$

$\Rightarrow \ \displaystyle \frac{5.708}{100000000}$

The decimal place moves 8 units to the left side.

$\Rightarrow \ 0.00000005708$

$\rule[225]{225}{2}$

melisa1 [442]3 years ago

6 0

Answer:

.00000005708 is your answer. If it's asking you to solve the problem, 49.08

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Answer:

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A chemist wishes to mix a solution that is 6% acid. She has on hand 14 liters of a 4% acid solution and wishes to add some 10% a

jonny [76]

she should add 7 liters of 10% acid solution

Explanation

Step 1

set the equation:

a) let X represents the amount os solution that is 4% acid

let Y represents the amount os solution that is 10% acid

$\begin{gathered} \frac{4}{100}X+\frac{10}{100}Y=\frac{6}{100}(x+y) \\ \end{gathered}$

if he has 14 liters of 4% acid solution

$x=14$

$\begin{gathered} \frac{4}{100}X+\frac{10}{100}Y=\frac{6}{100}(X+Y) \\ \frac{4}{100}*14+\frac{10}{100}Y=\frac{6}{100}(X+Y) \\ 0.56+0.1Y=0.06(14+Y) \\ 0.56+0.1Y=0.84+0.06Y \\ \end{gathered}$

Step 2

solve the equation :

$\begin{gathered} 0.56+0.1Y=0.84+0.06Y \\ subtract\text{ 0.06Y in both sides} \\ 0.56+0.1Y-0.06Y=0.84+0.06Y-0.06Y \\ 0.56+0.04Y=0.84 \\ subtract\text{ 0.56 in both sides} \\ 0.56+0.04Y-0.56=0.84-0.56 \\ 0.04Y=0.28 \\ divide\text{ both sides by 0.04} \\ \frac{0.04Y}{0.04}=\frac{0.28}{0.04} \\ Y=7 \end{gathered}$

therefore,

she should add 7 liters of 10% acid solution

I hope this helps you

8 0

1 year ago