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Leno4ka [110]
3 years ago
6

White - 20 marbles

Mathematics
1 answer:
DochEvi [55]3 years ago
8 0

Answer: d

Step-by-step explanation:

The probability of not being purple is the probability of the three other colors. Suppose the number of purple marbles is x. Then we have 20+30+40+x = 90 + x marbles. Then the probability of not being purple is 90/(90+x). If this fraction can have a lowest term for some value of x, then the numerator of this lowest term must be a factor of 90.

Checking through the options, only option D has a non-factor of 90 as its numerator.

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3. Graph y=-4x² – 2 and its inverse. (1 point)
madam [21]

Function and its inverse was graphed.

<u>Step-by-step explanation:</u>

y = -4x²- 2

To find the inverse function of   y = -4x²- 2 we have to transform the formula to calculate  x in terms of y.

y = -4x²- 2

-4x² = y - 2

x = √(y-2) / -4

Now we can change the letters to follow the convention that  x is the independent variable and  y is the function's value:

y = √(x-2) / -4

Now we have to draw the graph as,

It was side by side that is LHS is the function and the RHS is its inverse.

6 0
3 years ago
Find the 114th term of the following sequence
bulgar [2K]

Answer:

456

Step-by-step explanation:

1. Based on the parts of the pattern show you can tell that the term is the step number multiplied by four. 2. Based on that you can multiply step 114 by 4 which gives you 456.

6 0
3 years ago
What transformation of f(x) will result in g(x) ?
Amanda [17]

Answer:

Vertical stretch across the y-axis, reflection across the x-axis, horizontal shift 2 units to the left, and vertical shift 1 unit down

3 0
3 years ago
What is the circumference of a circle with a diameter of 23.4 inches?<br><br> please hellp
Alecsey [184]

Answer:

Step-by-step explanation:

Circumference = 73.51

Hope this helps :)

8 0
3 years ago
Read 2 more answers
Why do I think I'm ugly
Tanya [424]

Answer:

Ok listen here

Step-by-step explanation:

You are like the earth.

On the inside is a bright center and lava. When lava comes to the surface as a volcano, many people think it's ugly and dangerous, but other people think that it's beautiful.

We all know that a lot of people think the surface of the earth is ugly, and they have given up hope that people can change it, but the truth is that, the world is beautiful and we can change it.

You are beautiful and the people on your earth are represented as your brain. Your brain needs to tell you to look at yourself and to say that you are beautiful. You can change your mindset to tell you that you don't care what other people say, all that matters is what you say.

Always remember that :)

7 0
3 years ago
Read 2 more answers
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