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4 years ago

6 is 15% of what number

2 answers:

5 0

To solve this problem, you must set it up like this : 6/x = 15/100
Now, cross-multiply. 15x = 600
Divide by 15 on each side.
x=40.

6 is 15% of 40.

Hope this helps :)

pashok25 [27]4 years ago

5 0

I made this comment so the other girl can get brainliest answer

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Model the problem with algebra tiles. Then use the model to write an algebraic expression that represents the situation. Isaac g

lana [24]

Answer:

1. one orange x tile

2. five blue - tiles

3. x-5

Step-by-step explanation:

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3 years ago

(1 point) a tank contains 1060 l of pure water. a solution that contains 0.06 kg of sugar per liter enters the tank at the rate

kirill115 [55]

(a) There is 0 kg of sugar in the tank at the beginning since it contains pure water at the start. The sugar only comes from the solution.

(b)

$S' = f(t,S) = \left(0.06 \dfrac{\text{kg}}{\text{L}}\right)\left(9\dfrac{\text{L}}{\text{min}}\right) - \left(\dfrac{S}{1060} \dfrac{\text{kg}}{\text{L}}\right)\left(9\dfrac{\text{L}}{\text{min}}\right) \ \Rightarrow \\ \\ S' = 0.54 \text{ kg}/\text{min} - \dfrac{9S}{1060}$

So yes, you enter S' = 0.54 - (9S/1060)

(c)

$\displaystyle\frac{dS}{dt} = 0.54 - \frac{9S}{1060} \ \Rightarrow\ \frac{dS}{dt} = \frac{572.4 - 9S}{1060}\ \Rightarrow\ \dfrac{dS}{572.4 - 9S} = \frac{1}{1060} dt\ \Rightarrow \\ \\
\int \dfrac{dS}{572.4 - 9S} = \int \frac{1}{1060} dt\ \Rightarrow\textstyle\ -\frac{1}{9}\ln|572.4 - 9S| = \frac{1}{1060}t + C \\ \\
S(0) = 0 \ \Rightarrow\ -\frac{1}{9}\ln|572.4 - 0| = \frac{1}{1060}(0) + C\ \Rightarrow\ C = -\frac{1}{9} \ln 572.4$

$-\frac{1}{9}\ln|572.4 - 9S| = \frac{1}{1060}t -\frac{1}{9} \ln 572.4\ \Rightarrow \\ \\
\ln|572.4 - 9S| = \ln 572.4 - \frac{9}{1060}t \ \Rightarrow \\ \\
|572.4 - 9S| = e^{\ln 572.4 - 9t/1060}\ \Rightarrow \\ \\
572.4 - 9S= \pm 572.4 e^{-9t/1060}\ \Rightarrow \\ \\
S = \frac{-1}{9}\left(-572.4 \pm 572.4 e^{-9t/1060}\right)$

But only (+) satisfies $S(0) = 0$

$S= -\frac{1}{9}\left(-572.4 + 572.4 e^{-9t/1060}\right) \\ \\
S= 63.6 - 63.6 e^{-9t/1060}\text{ kg}$

Enter in S = 63.6 - 63.6 * e^(-9t/1060)

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3 years ago

Evaluate the expression when m= -6.<br> m+6m + 5

ollegr [7]

Answer:

the answer is -37.......

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4 years ago

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А<br> square has an area of 1 square unit. What is the length of the square?

ella [17]

Answer:

0.25 on each side

Step-by-step explanation:

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3 years ago

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In basketball, the number of points you score is given by the expression 3x + 2y + 1z x is three-pointers, y is two-pointers, an

nevsk [136]

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Step-by-step explanation:

To solve this question, we only need to substitute the variables x,y and z with the numbers of three pointers, two pointers and free throws respectively.

The expression to use is 3x + 2y + 1z.

After substitution:

The expression becomes 3(3) + 2(5) + 1(6)

9 + 10 + 6 = 25 points

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3 years ago