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SVETLANKA909090 [29]
3 years ago
10

About 17% of Americans have blue eyes. There are 85 students at Park Street Middle School who have blue eyes. How many total stu

dents would there need to be at Park Street Middle School for the percentage of students with blue eyes to match the national statistic? Please show your work
*Please give me an answer no later than 8:00 on 4/7/16. Thank you!
Mathematics
1 answer:
Lerok [7]3 years ago
4 0
85 divided by 17=5 so every 1% of students at the school comprise of 5 students, to find the total number of students we need to multiply 100 by 5 making 500, so there would be 500 students at park street middle school for the number of students with blue eyes to match the national statistic.
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Please help! functions operations. explain please
Lina20 [59]

Answer:

f^{-1}(x)=x^2-3

Step-by-step explanation:

Given f(x)=\sqrt{x+3}

Let y=\sqrt{x+3}

Interchange x and y

x=\sqrt{y+3}

Solve for y, by first squaring both sides

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Hence

f^{-1}(x)=x^2-3

The last choice is correct

5 0
3 years ago
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labwork [276]
Domain is the numbers you can use
range is the result of inputing the domain

an interesting fact is that the inverse of a function switches the domain and range

basically
the domain of f(x) becomes the range of f^-1(x)
the range of f(x) becomes the domain of f^-1(x)
so just find the domain and range of f(x)


f(x)=3x- \frac{1}{2}
there are no restrictions
all real numbers can be used
all real numbers can result


so the answer is domain and range for both is all real numbers

D is answer
7 0
3 years ago
-<br><img src="https://tex.z-dn.net/?f=%20-%20%20%5Csqrt%7B5%20%20%7D%20%20-%203%20%5Csqrt%7B5%7D%20" id="TexFormula1" title=" -
xxTIMURxx [149]

Step-by-step explanation:

-\sqrt5-3\sqrt5=-1\sqrt5-3\sqrt5=(-1-3)\sqrt5=-4\sqrt5

3 0
4 years ago
In a wildlife park, there were 18 gray wolves. After three years, there were 27 gray wolves. What is the percent gain?
natulia [17]
27-18=9 (difference between)
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0.5x100=50 (as a percentage)

50% increase
4 0
3 years ago
Read 2 more answers
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vazorg [7]

Answer:

Step-by-step explanation:

3a-8a>-20

-5a>-20

a>-20/-5

a>4

5 0
3 years ago
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