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ad-work [718]
3 years ago
6

Which of the following is the domain of the function {(3,6),(5,7),(7,7),(8,9)}

Mathematics
2 answers:
almond37 [142]3 years ago
7 0
The Domains Are 3,3,7,8. You Can Remember This By Remembering That The Domain Is All X Factors And Range Is All Y Factors
faltersainse [42]3 years ago
3 0

Step-by-step explanation:

well the awnsered was close but it's actually {3,5,7,8}

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(HELP!! WILL GIVE 86 POINTS!!)
astraxan [27]

Answer: 2(−x+y=−2)

2(−x+y=−2)

1(2x−3y=4)

Becomes:

−2x+2y=−4

2x−3y=4

Add these equations to eliminate x:

−y=0

Then solve−y=0for y:

−y=0

−y/-1 = 0/-1 (Divide both sides by -1)

y=0

Step-by-step explanation:

Now that we've found y let's plug it back in to solve for x.

Write down an original equation:

−x+y=−2

Substitute 0 for y in −x+y=−2:

−x+0=−2

−x=−2(Simplify both sides of the equation)

−x/-1 = -2/-2 (Divide both sides by -1)

x=2

Answer:

x=2 and y=0

4 0
3 years ago
Read 2 more answers
does anyone know how to solve (and find the domain) a math problem like this: (7^5-x)^6-x = 49 (pls include explanation I have a
Naily [24]

Answer:

his is the format of the straight-line equation,

Where, y = mx + c

Here, m = slope

c = y-intercept.

You usually get coordinates, and after solving, we get our result as an equation of the line.

Hope this helps!

Step-by-step explanation:

7 0
3 years ago
A video store specializes in three types of movies: children's, American West, and horror. It's known that:
xenn [34]

X, y, z denote children's movies, western movies, and horror movies, respectively. The related system of equations is formed and solved.

\left\{\begin{matrix} \qquad\qquad\ \dfrac{60}{100}x + \dfrac{50}{100}y =\dfrac{30}{100}(x+y+z)\\ \dfrac{20}{100}x+ \dfrac{60}{100}y+ \dfrac{60}{100}z= \dfrac{1}{2}(x+y+z) \\ \ \ \ x+100=y \end{matrix} \right.\

Simplifying the system of equations, we have

\left\{\begin{matrix} 3x + 2y -3z=0\\ -3x+ y+ z= 0 \\ \ \ \ x+100=y \end{matrix} \right.\ \ \Longrightarrow \ \left\{\begin{matrix} 5x-3z=-200\\ -2x+ z= -100 \end{matrix} \right.\

\ \ \  5x-3z=-200\\\underline{-6x+3z=-300} \ \Rightarrow \ x=500\\\ \ -x+0= \ 500

                                       y&=500+100=600\\ z&=3(500)-600=900

The video store has 500 children's movies, 600 westerns and 900 horror movies.

6 0
2 years ago
What is the length of the third side of the window frame below? (Figure is not drawn to scale.) A picture of a right triangular
dmitriy555 [2]
78^2-72^2= 900
√900= 30

a. 30in
7 0
4 years ago
Read 2 more answers
What does the word Pi mean?
Firlakuza [10]
Pie is a circled circumference which is 3.14 rounded but real pie is 3.14159265359
5 0
4 years ago
Read 2 more answers
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