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Pie
4 years ago
12

Which of the following expressions represents a function?

Mathematics
2 answers:
Mama L [17]4 years ago
5 0

D is the correct answer the other person who answered explains why.

Softa [21]4 years ago
4 0
A. Not a function because it's a circle that doesn't pass the vertical line test

B. Not a function because we have x = 4 repeated more than once. Same for x = 9 as well.

C. Not a function. Any vertical line fails the vertical line test. Any vertical line is therefore not a function.

D. This is a function since it passes the vertical line test.

------------------------------------------------------

In summary, the final answer is choice D
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How do you do this please help me
KonstantinChe [14]
Perimeter is the sum of the sides.
4x + 6 +3x + 2 = 57
7x + 8 = 57
7x = 49
x = 7
5 0
4 years ago
Read 2 more answers
How many cases are these?
Neporo4naja [7]

There are forty cases of insomnia to be used in the study. There are two variables, the therapy and the improvement of sleep. There are two categorical variables in the study.

<h3>What is a variable?</h3>

The term variable refers to something whose value changes. An experiment would always have to variables; the independent variable and the dependent variable. The dependent variable changes when the independent variable is changed.

In this experiment, there are forty cases of insomnia to be used in the study. There are two variables, the therapy and the improvement of sleep. There are two categorical variables in the study.

Learn more about variable:brainly.com/question/17344045

#SPJ1

5 0
2 years ago
owen and rose each thought of a linear function. Owen's function is y = 3 4 x + 1, and rose's function is shown in the graph. Wh
slega [8]

Answer:

D) Owen’s function has a greater slope, and Rose’s function has a greater y-intercept

Step-by-step explanation:

slope-intercept form of linear equation: y = mx + b

(where m is the slope and b is the y-intercept)

Slope = change in y ÷ change in x

y-intercept is where the line crosses the y-axis

Owen: y = (3/4)x + 1

Rose: y = (2/3)x + 2

Owen's function has a greater slope, since 3/4 > 2/3

Rose's function has a greater y-intercept, since 2 > 1

4 0
3 years ago
I really need help with this
Alex Ar [27]

Answer:

A. x = 3, y = -3

B. a = -2, b = 5

C. try your best ill see u later

Step-by-step explanation:

Okay I'mma state some stuff first 3^a + 3^b = 3^(a+b)

and 3^a/3^b = 3^(a-b)

So first equation 3^3*3^-3=3^0

So second equation 3^3/3^-2 = 3^5

So third equation I dont really know the rule but I'mm just plug in a random number for g, like 2, then solve the thing like a normal equation.

So 3^-3 x f^-3 = 12^2 = 144, f^-3 = 144/(3^-3 or 1/27) = 144 x 27 = 3888

so f^-3 = 3888, f = well its an imaginary number according to calculator so u try your best on the last one

5 0
3 years ago
Explain reasoning!
vova2212 [387]

Answer:

1.) Incorrect,

2.) Correct

Step-by-step explanation:

1.) Let x be the amount of money,

After increasing x by 20%,

New amount of money ( say y )= (100+20)% of x ( i.e. y is 20% more than x )

= 120 % of x

=\frac{120x}{100}

⇒ y = 1.20x

\because \frac{y-x}{y}\times 100=\frac{ 1.20x-x}{1.20x}\times 100

=\frac{0.2x}{1.2x}\times 100

=\frac{20}{1.2}

≈ 16.67%

Thus, x is approximately 16.67% less than y.

2.) First score = 60%,

Second score = x% ( let )

So, Average percentage score = \frac{60+x}{2}

If \frac{60+x}{2}=70

60+x=140\implies x = 80

4 0
4 years ago
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