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antoniya [11.8K]
4 years ago
15

A bag contains 5 blue marbles, 2black marbles ,and 3 red marbles. A marine is randomly drawn from the bag The probability of not

drawing a red marble is___ . The probability of drawing a red marble is
Mathematics
1 answer:
Juli2301 [7.4K]4 years ago
7 0
<h3>Answers:</h3>

The probability of not drawing a red marble is   7/10

The probability of drawing a red marble is  3/10

=======================================================

Explanation:

We have 3 red marbles out of 5+2+3 = 10 total. Therefore, the probability of selecting a red marble is 3/10.

The probability of not selecting a red marble is 7/10 because 3/10+7/10 = 1. Put another way, we have 7 marbles that aren't red (the 5 blue and 2 black ones) out of 10 total.

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Can someone help me with these 3 questions of you can and show the work too
Vesnalui [34]
Hi
1. Temp was 5 at noon and dropped 59 degrees at midnight. 5+(-59)= -54 (B)

2. The stock dropped by 5 points and opened at 93 points that day.
93+(-5)=88 points (B)

3. The temperature fell by 12° over 4 hours.
12÷4=3° decreased per hour (C)

Hope that clarifies these. Let me know if these aren't clear.
5 0
3 years ago
What is the measurement of each of the exterior angles of a regular pentagon?
valina [46]

Remember that the degree measure of each exterior angle of a polygon can be found through the formula

\dfrac{360}{n}

where n is the number of sides on the polygon.


Since a pentagon has five sides, the degree measures of each of its five sides would be:

\dfrac{360}{5} = 72^{\circ}


Thus, our answer is Choice B, or 72 degrees.

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3 years ago
2. Kelsey has a list of possible functions. Pick one of the g(x) functions below and then describe to Kelsey the key features of
Gemiola [76]

Answer:

g(x) = (x + 2)(x − 1)(x − 2)

I picked the first one, because why not. :)

<u>End behavior.</u> This is a positive function; there are no negatives next to any of the xs. There are 3 xs, so it's a cubic; a positive cubic has a down-up end behavior.

<u>Y-intercept.</u> We can either graph this on the calculator/online or work it out algebraically. Multiply together the constants: +2 * -1 = -2, -2 * -2 = 4. So the y-intercept is at y = 4. (0,4). I've also attached the graph.

<u>Zeros / x-intercept.</u> This is really simple: set g(x) equal to 0, separate these three parenthesis (x+2) (x-1) and (x-2) into three equations by the Zero Product Property.

x+2 = 0

x = -2

x-1 = 0

x = 1

x-2 = 0

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3 years ago
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3 years ago
Deon plots points to show the time it takes him to swim laps on two days. Is there a proportional relationship between the numbe
Sever21 [200]

Answer:

There's no proportional relationship between number of laps and minutes.

Step-by-step explanation:

The graph given above is a straight line graph, however, it does not cut across the point of origin (0, 0). As a result of this, it would be difficult to get a constant of proportionality, as you'd likely get different constant of proportionality between different points on the line. Thus, the ratio of y and x for each set of points may vary.

So therefore, the relationship between the x and y cannot be proportional.

We can conclude that the graph does not represent a proportional relationship between number of laps and minutes.

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