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2 years ago

Which relations are functions?function or not a function?

Mathematics

1 answer:

Bad White [126]2 years ago

6 0

Hi there,

The first one is a function this is because it has a straight line and you are able to figure out the slope.

The second one is not a function because it is not a straight line and with that you are unable to determine the slope.

The third one is a function. It has a straight line.

Lastly, the fourth one is not a function. It doesn't have a straight line

Hope these are correct :)

Have a great day

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Help with polynomials

Mrac [35]

$(10x^2 + 5x + 3) + (2x^2 - 7x + 5) \\ \\ 10x^2 + 5x + 3 + 2x^2 - 7x + 5 \\ \\ (10x^2 + 2x^2) + (5x - 7x) + 3 + 5 \\ \\ 12x^2 - 2x + 3 + 5 \\ \\ 12x^2 - 2x + 8 \\ \\$

The answer is: 12x² - 2x + 8.

8 0

3 years ago

Read 2 more answers

198.16 in word form pls help

pogonyaev

Answer:

Hiya there!

Step-by-step explanation:

One hundred ninety-eight and sixteen hundredths.

I think this is correct i'm not that sure.

Hope this <em><u>Helped!</u></em> :D

4 0

3 years ago

One kilogram is 2.2 pounds. If i had 1 pound would that be 0.45 kilograms why or why not?

prisoha [69]

Step-by-step explanation:

1 kg = 2.2 pounds

0.45 kg = 1 pounds to see whether it's correct or not we can cross multiply the given equations

multiply 1 kg with 1 pounds and 0.45 kg with 2.2 pounds then check if they are equal

1 × 1 = 2.2 × 0.45

1 = 0.99 as you can see this is not an equality therefore the statement is wrong.

3 0

3 years ago

A minigolf ball is on a perfectly horizontal surface, x = 2 m away from the center of the hole. There is a small obstacle in the

nika2105 [10]

<h3>Answer:</h3><h3>Two possible smallest and largest angles are 11.78° and 78.22°.</h3>

Step-by-step explanation:

Minigolf ball will follow a trajectory to get into the hole.

Since range of a trajectory is calculated by the formula,

$R=\frac{u^{2}sin2\theta}{g}$

Where u = initial speed of the ball

θ = angle between the hole and direction in which the ball has been projected

g = gravitational pull

Now we plug in the values in the formula,

$2=\frac{7^{2}sin(2\theta)}{9.8}$

sin2θ = $\frac{2\times 9.8}{49}$

2θ = $sin^{-1}(0.4)$

2θ = 23.57° or 156.43°

θ = 11.78° or 78.22°

Hence two possible smallest and largest angles are 11.78° and 78.22°.

6 0

3 years ago

#8 Tessa has a plan for a set of stairs made of concrete, as shown. Each stair is 1 point the same width and height and is talle

Afina-wow [57]

Answer: 2.43m^3

Step-by-step explanation:

6 0

2 years ago