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hodyreva [135]
2 years ago
15

The marching band at parkland high school has 128 students of these 18.75% are ninth graders how many ninth graders are there in

the band
Mathematics
1 answer:
Helen [10]2 years ago
6 0

Hey, Melany. To answer this problem, simply set up a proportion: \frac{18.75}{100} = \frac{x}{128}. Now let's solve for x.

- Cross multiply:\frac{18.75*128}{100*x} --> 2400 = 100x

- Isolate x:

\frac{2400}{100} = \frac{100x}{100}

This means that x = 24.

There are 24 9th graders in the band.


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The graphs of f(x) = 10x and its translation, g(x), are shown. On a coordinate plane, 2 exponential functions are shown. f (x) a
cricket20 [7]

Answer:

g(x)=(10)^{x-3}

Step-by-step explanation:

* <em>Lets explain how to solve the problem</em>

- The form of the exponential function is f(x)=a(b)^{x} , where

 a is the initial amount (x = 0) , b is the growth factor

- If b > 1 , then the function is exponential growth function

- If 0 < b < 1 , then the function is exponential decay function

- If the function translated horizontally by h units to the right , then

 the new function is g(x)=a(b)^{x-h}

- If the function translated horizontally by h units to the left , then

 the new function is g(x)=a(b)^{x+h}

- If the function translated vertically by k units up , then the new

 function is g(x)=a(b)^{x}+k

- If the function translated vertically by k units down , then the new

 function is g(x)=a(b)^{x}-k

* <em>Lets solve the problem</em>

∵ f(x) is an exponential function

∵ Points (0 , 1) , (1 , 10) , (2 , 100) belong to f(x)

- g(x) is the image of f(x) after translation

∵ Points (3 , 1) , (4 , 10) , (5 , 100) belong to g(x)

∵ point (0 , 1) on f(x) becomes (3 , 1) on g(x)

∵ point (1 , 10) on f(x) becomes (4 , 10) on g(x)

∵ point (2 , 100) on f(x) becomes (5 , 100) in g(x)

∵ All the y-coordinates of the points on the function f(x) are the same

 with the y-coordinates of the points on the function g(x)

∴ There is no vertical translation

∵ The x-coordinates of the points on the function f(x) are added by

   3 units to give the x-coordinates of the points on the function g(x)

∴ f(x) is translated 3 units to the right

∵ f(x)=(10)^{x}

∴ g(x)=(10)^{x-3}

- Look to the attached graph for more understand

# Red graph represents f(x)

# Blue graph represents g(x)

4 0
2 years ago
Read 2 more answers
Which of the following is an equivalent form of the compound inequality −33 &gt; −3x − 6 ≥ −6?
wolverine [178]

<u>ANSWER</u>

9\:   < x  \leqslant0

<u>EXPLANATION</u>

The given compound inequality is

- 33 \:  >  - 3x - 6 \geqslant  - 6

We need to simplify this inequality so that we can obtain x standing alone between the inequality signs.

We add 6 through out the inequality.

- 33  + 6\:  >  - 3x - 6 + 6 \geqslant  - 6 + 6

This simplifies to:

- 27\:  >  - 3x \geqslant  0

We now divide through by -3 and reverse the inequality sign.

\frac{- 27}{ - 3} \:   <   \frac{ - 3x}{ - 3}   \leqslant    \frac{0}{ - 3}

We now simplify to get:

9\:   < x  \leqslant    0

6 0
2 years ago
Harriet earns the same amount of money each day. Her gross pay at the end of 7 work days is 35h + 56 dollars. Which expression r
scoray [572]
<span>In the question "Harriet earns the same amount of money each day. Her gross pay at the end of 7 work days is 35h + 56 dollars. Which expression represents her gross pay each day" To obtain the expression that represents her gross pay each day, we divide the given expression by 7 to get (35h + 56) / 7 = 35h / 7 + 56 / 7 = 5h + 8 Therefore, the expression that represents her gross pay each day is 5h + 8.</span>
8 0
1 year ago
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Let ff be the function given by f(x)=e2x−1 x f(x)=e2x−1 x. Which of the following equations expresses the property that f(x)f(x)
navik [9.2K]

Answer:

Step-by-step explanation:

\lim_{x \to \ 0} \frac{e^{2x}-1 }{x} \\= \lim_{x \to \0} \frac{e^{2x}-1 }{2 x}  *2\\\rightarrow2 log e\\\rightarrow 2

5 0
2 years ago
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WARRIOR [948]

Answer:

0.3 or 30%

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The professors will only seek a smaller publisher if they cannot place the statistics book with a major publisher. If the probability of getting a major publisher is 40% and the probability of getting a smaller publisher is 50%, then the probability that the statistics book would wind up being placed with a smaller publisher is given by:

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The probability is 0.3 or 30%.

3 0
2 years ago
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