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valentinak56 [21]
4 years ago
5

A bag holds 10 blue marbles, 2 white marbles, and 8 red marbles. Without looking into the bag, William selects a marble and then

returns it to the bag. If he selects 2 marbles in this way, what is the probability that both will be blue?
A.10%
B.25%
C.50%
D.75%
Mathematics
2 answers:
Flura [38]4 years ago
8 0

Answer: C

Step-by-step explanation:

Because 8 + 2 = 10 and that is half and blue is the other half so it’s 50%

mixas84 [53]4 years ago
7 0
50% I know I did this before
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mary spends 40% of her monthly earnings on rent and 10% of the remaining amount on entertainment. If she spends $800 for rent, h
liraira [26]

Answer:

<em>$120</em>

Step-by-step explanation:

40% of the earnings is spent on rent.

The earnings is an unknown, so we call it x.

The rent is $800, so 40% of x equals $800.

40% * x = 800

0.4x = 800

x = 800/0.4

x = 2000

She earns $2000 per month.

After paying rent, the remaining amount is

$2000 - $800 = $1200

She spends 10% of the remaining amount on entertainment.

10% of $1200 = 10% * $1200 = 0.1 * $1200 = $120

5 0
4 years ago
Find the zeros of the function.<br> f(x) = 2x2 – 2x – 12
Amiraneli [1.4K]

Answer:

Step-by-step explanation:

2x^2-2x-12

This has solutions of x=3 and x= -2

3 0
3 years ago
Read 2 more answers
The values of x and y are proportional. Determine the constant of proportionality(k)
Studentka2010 [4]
<h3>The constant of proportionality is k = 5</h3>

For direct proportion equations, you divide the y value over its corresponding x value to get the value of k.

For example, the point (x,y) = (2,10) is on the diagonal line. So k = y/x = 10/2 = 5.

Another example: the point (x,y) = (6, 30) is also on the same diagonal line, so k = y/x = 30/6 = 5 is the same result as before.

You can use any point on the diagonal line as long as it is not (0,0). This is because division by zero is not allowed.

side note: the direct proportion equation y = k*x becomes y = 5*x which is the graph of that diagonal line. The slope is m = 5, the y intercept is b = 0. All direct proportion graphs go through the origin as shown in the diagram.

3 0
4 years ago
1. Adjacent angles are two angles in the same plane with a common
stepan [7]

Answer:

Adjacent angles are two angles in the same plane with a common  <u>VERTEX</u> and a common  <u>SIDE</u> but no common interior points.

Step-by-step explanation:

Adjacent angles share a common side on the same vertes, but they do not overlap each other.

In the attached image, ∠ABD is adjacent to ∠DBC, but ∠ABC is not adjacent to any of them.

4 0
3 years ago
What is the sum of 1.57 and 6.88?
mario62 [17]

Answer:

8.45 is the answer

Step-by-step explanation:

Hope it helps you

6 0
3 years ago
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