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3 years ago

14

An MP3 player costs $70 and song downloads cost $0.95 each. Write an expression that represents the cost of the MP3 player and x

number of song downloads

1 answer:

babunello [35]3 years ago

3 0

Let x represent the number of song downloads and let y represent the total cost

y=0.95x+70

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Proportional or non-proportional

mafiozo [28]

Answer:

Proportional

Step-by-step explanation: since nothings attached i guessed.

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3 years ago

2. What is the area of the circle below?

grigory [225]

Pi • radius squared = Area

n = pi

n • 3 • 3 (3 squared is the same thing as 3 multiplied by 3)

9n

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2 years ago

One ball is to be selected from a box containing red, white, blue, yellow, and green balls. If the probability that the selected

ZanzabumX [31]

Answer:

30% probability that it will be yellow, or green

Step-by-step explanation:

The urn has red, white, blue, yellow, and green balls.

Each ball is chosen with the following probabilities:

1/10 = 10% probability it is red

2/5 = 40% probability it is white

1/5 = 20% probability it is blue.

p probability it is yellow or green

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The sum of all probabilities is 100%. So

10 + 40 + 20 + p = 100

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3 years ago

Explain how you have solved for x and show your workings out. I will award the brainliest 25 points!

Brums [2.3K]

Answer:

The value of $x$ is 10º.

Step-by-step explanation:

From Euclidean Geometry we remember that the sum of internal angles within a triangle equals to 180º. We present the resulting triangle after applying some geometric handling in the image attached below. Then, the triangle satisfies the following equation:

$100^{\circ} + (80^{\circ}-5\cdot x)+(4\cdot x +10^{\circ}) = 180^{\circ}$ (1)

$190^{\circ} - x = 180^{\circ}$

$x = 10^{\circ}$

The value of $x$ is 10º.

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3 years ago

Which is perpendicular to the line y=-3x-8y

atroni [7]

Answer:

I believe the answer is y = -7/3x

Step-by-step explanation:

When you rearrange the equation, y = -3x - 8y, you will get -7y = -3x.

We want the equation to be equal to y by itself. So we divide -7 from both sides, giving us the equation y = 3/7x.

The graph that is perpendicular to y = 3/7x is it's reciprocal: y = -7/3x

4 0

2 years ago

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