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krok68 [10]
3 years ago
10

Can someone help me find the answer if you know it please leave how you did it

Mathematics
1 answer:
Yanka [14]3 years ago
3 0
I’m not sure what you want me to do
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30/x = 54/81 what value does x have to be to make it true
Dafna11 [192]

Answer:

x=45

Step-by-step explanation:

30/x = 54/81

30 = 54/81(x)

x = 30 ÷ 54/81

x=45

5 0
3 years ago
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The base of a solid in the xy-plane is the first-quadrant region bounded y = x and y = x^2. Cross sections of the solid perpendi
musickatia [10]
Check the picture below.

thus, if one side on the square is x - x², then the area for the square is (x - x²)(x - x²), or (x - x²)²

now... what is the "x" value for the region, let's check their intersection.

\bf \begin{cases}
y=x\\
y=x^2
\end{cases}\implies x=x^2\implies 0=x^2-x\implies 0=x(x-1)
\\\\\\
x=
\begin{cases}
0\\
1
\end{cases}\\\\
-------------------------------\\\\
\displaystyle \int\limits_{0}^{1}\ (x-x^2)^2\cdot dx\implies \int\limits_{0}^{1}\ (x^2-2x^3+x^4)\cdot dx
\\\\\\
\cfrac{x^2}{2}-\cfrac{2x^4}{4}+\cfrac{x^5}{5}\implies \left. \cfrac{x^2}{2}-\cfrac{x^4}{2}+\cfrac{x^5}{5} \right]_{0}^{1}\implies \left[ \cfrac{1}{2}-\cfrac{1}{2}+\cfrac{1}{5} \right]-[0]\implies \cfrac{1}{5}

4 0
3 years ago
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X (year)| y ($ in billions)
Bingel [31]
Rate of change is also another name for the slope so in this case, the question is asking you for the slope.

How can we find the slope?
The formula for slope is y2-y1/x2-x1

Now let's plug in for the year 1980 and 1990.

239-120/1990-1980
= 119/10

Slope is 119/10.
3 0
3 years ago
How many sides has a regular polygon if each interior angle is five times the exterior angle​
Nostrana [21]

Answer:

26 sides

Step by step explanations

Is these om

6 0
3 years ago
Order the numbers from least to greatest -5, 18, 0, -18,9, -15 plz help asap
forsale [732]

Answer: -18, -15, -5, 0, 9, 18

7 0
3 years ago
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