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Lisa [10]
2 years ago
11

Write and solve a proportion that the teacher can use to estimate how many students in the whole school would choose the aquariu

m. Show your work.
Number of students
who chose the aquarium in survey  =       X
100                                                            1000
5.  What would be the percentage of students expected to choose the farm?

Mathematics
1 answer:
Anon25 [30]2 years ago
6 0

Answer:

Never gonna

Step-by-step explanation:

give you up,

Let you down,

make you cry

Run around and desert you

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Find the domain of f(x)=x-9/x squared-81
vagabundo [1.1K]

f(x)=\dfrac{x-9}{x^2-81}\\\\\text{The domain:}\\\\x^2-81\neq0\qquad\text{add 81 to both sides}\\\\x^2\neq81\to x\neq\pm\sqrt{81}\\\\x\neq-9\ \wedge\ x\neq9\\\\Answer:\ \boxed{\text{All real numbers except -9 and 9}}\to\boxed{x\in\mathbb{R}-\{-9,\ 9\}}

7 0
3 years ago
Which of the following statements are true of the graph of the function f(x)=(x+5)(x-3)?
mr_godi [17]

Answers: b, d and e

b.The graph has a relative minimum

d. The graph has an x intercept at 3,0

e. the graph has an y intercept at 0,-15

f(x)=(x+5)(x-3)

The given equation is in the form of f(x) = a(x-b)(x-c)

If 'a' is positive then graph has a relative minimum

If 'a' is negative then graph has a relative maximum

Here a=1 that is positive so graph has a relative minimum .

To find x intercept we set f(x) =0 and solve for x

0=(x+5)(x-3)

x+5 =0 -> x = -5 so x intercept is (-5,0)

x - 3=0 -> x= 3 so x intercept is (3,0)

To find y intercept we plug in 0 for x

y=(x+5)(x-3)

y=(0+5)(0-3) = -15

so y intercept is (0,-15)



5 0
3 years ago
Read 2 more answers
In a town there are 1,050 people who can vote. There were two candidates in the election for the town’s mayor. The results of th
kramer

Answer: Not sure, but Ill go with C.

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Graph a line that is parallel to the given line. Determine the slope ofthe given line and the one you graphed in simplest form.
Daniel [21]

original slope = -4/3

parallel slope = -4/3

Explanation:

For a line to be parallel to anpother line, the slope of both lines must be equal.

We need to find the slope of the given line by picking any two points on the line.

Using points (-6, 5) and (0, -3)

slope formula:

m\text{ = }\frac{y_2-y_1}{x_2-x_1}\begin{gathered} x_1=-6,y_1=5,x_2=0,y_2\text{ = -}3 \\ \text{slope = m= }\frac{-3-5}{0-(-6)}=\frac{-8}{0+6} \\ m\text{ = -8/6} \\ m\text{ = -4/3} \end{gathered}

The equation of the given line: y = mx + b

b = y-intercept = -3

y = -4/3x - 3

The equation line parallel to the one above could be:

y = -4/3 x + 7

This because the slope are the same

original slope = -4/3

parallel slope = -4/3

plotting the graph of the lline parallel to the first one:

3 0
1 year ago
What is the value of x
damaskus [11]

Answer:

Step-by-step explanation:

115+94+107+2x=360 degree(sum of interior angles of four angles is always 360 degree)

316+2x=360

2x=360-316

x=44/2

x=22 degree

6 0
3 years ago
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