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mylen [45]
3 years ago
6

A yardstick placed perpendicular to the ground casts a 4 foot shadow. At the same time, a grain silo casts a 34 foot shadow. Wri

te a proportion you can use to find the height of the silo
Mathematics
1 answer:
kobusy [5.1K]3 years ago
4 0
There is a 30 ft difference how can you not tell
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4. Mr. Downey used the function f(x) = -3x2 + 12x to model the flight of a glider. In Mr. Downey's
tankabanditka [31]

Answer: 120 seconds

Step-by-step explanation: In order to find the maximum value of a function, you can take the derivative of the function and equalize the result to 0.

f'(x)=(-3x^2 + 12x)'=-6x+12=0

x=2

When x is 2, the function will reach its maximum value.

f(2)=-3(2)^2 + 12.2 = -12 + 24 = 12

The maximum value (f(x)) is equal to 12 and the time passed is 2 minutes which is equal to 120 seconds.

6 0
3 years ago
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4/5 of a number is 32<br><br> Find the number.
nalin [4]

Answer: The number is 40

Step-by-step explanation:

We will set up an equation where 4/5 is being multiply by the number to get 32. we will represent that number  by x

4/5 * x = 32    solve for x

4/5x = 32  

0.8x = 32

 x = 40  

7 0
3 years ago
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(Please help worth 50 points) Part A
Marina86 [1]

x_{123} \frac{x}{y} \sqrt{x} \left \{ {{y=2} \atop {x=2}} \right. x^{2} \left[\begin{array}{ccc}1&2&3\\4&5&6\\7&8&9\end{array}\right] \int\limits^a_b {x} \, dx \left[\begin{array}{ccc}1&2&3\\4&5&6\\7&8&9\end{array}\right] \left[\begin{array}{ccc}1&2&3\\4&5&6\\7&8&9\end{array}\right] \leq \leq x_{123} \frac{x}{y}

   

                                                .                                     .                    

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6 0
2 years ago
Solution of the equation<br> 3x/5+1=4x/15+7
Anika [276]

Answer:

x = 18

Step-by-step explanation:

Given

\frac{3x}{5} + 1 = \frac{4x}{15} + 7 ( subtract 1 from both sides )

\frac{3x}{5} = \frac{4x}{15} + 6

Multiply through by 15 to clear the fractions

9x = 4x + 90 ( subtract 4x from both sides )

5x = 90 ( divide both sides by 5 )

x = 18

4 0
3 years ago
Find the diameter, approximate circumference and area of the circle below. (Use 3 for π)
vovikov84 [41]

Answer:

Circumference = 42

Area = 147 to the power of 2

Step-by-step explanation:

7x2=14 diameter

3x14=42 circumference

Area = 7x7x3 =147 to the power of 2

5 0
3 years ago
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