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aksik [14]
3 years ago
12

What is the probability of picking a blue marble from a bag of 3 blue marbles, 4 orange marbles, 2 yellow marbles and 1 red marb

le, then replacing the
marble and selecting a yellow marbles?
Mathematics
1 answer:
REY [17]3 years ago
3 0
I thinks it’s 20 because it’s easy
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Which of the following is not a proportional liner relationship?
DanielleElmas [232]
<h3>Answer: Choice A</h3>

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

Explanation:

A proportional linear relationship is of the form y = kx

We can solve for k to get k = y/x.

Based on that, we can prove a table is a proportional linear relationship if and only if each column of x,y values divide to the same number.

Choice A shows that y/x = 2/8 = 1/4 for the first column; however, y/x = 8/16 = 1/2 for the second column. The outputs 1/4 and 1/2 not being the same indicates we don't have a constant k value for all of the columns. This is sufficient to show that table A is not a proportional linear relationship.

-------------

In contrast, table B is a proportional linear relationship because we have these four divisions that lead to the same value (1/8)

  • Column One: y/x = 2/16 = 1/8
  • Column Two: y/x = 4/32 = 1/8
  • Column Three: y/x = 6/48 = 1/8
  • Column Four: y/x = 8/48 = 1/8

Showing that k = 1/8 for table B. The equation here is y = (1/8)x. We can rule out choice B.

I'll let you check out tables C and D on your own, but you should find that a similar situation shows up as did with table B. This indicates tables C and D are also proportional linear relationships. We can rule out choices C and D.

8 0
3 years ago
How many liters of pure water must be added to how many liters of a 25% bleach solution to make 12 liters of a 15% bleach soluti
ArbitrLikvidat [17]

Answer: 4.8 liters

Step-by-step explanation:

Let x liter of water is added with y liter of 25% beach solution.

Thus, According to the question,

x + y = 12  -------(1)

0% of x + 25 % of y = 15 % of 12

25 % of y = 15% of 12

25 y = 15\times 12

y = \frac{180}{25}

y = \frac{36}{5}

Put this value in equation (1),

We get,

x + \frac{36}{5} = 12

x = 12-\frac{36}{5}

x =\frac{60-36}{5}

x =\frac{24}{5}

Therefore, the quantity of water =  x =\frac{24}{5}=4.8\text{ liter}

And, the quantity of 25% bleach solution = y =\frac{36}{5}=7.2\text{ liter}

3 0
3 years ago
Given: ΔАВС, m∠ACB = 90°<br> CD ⊥ AB,<br> m∠ACD = 60°<br> BC = 6 cm.<br> Find: АD
umka21 [38]
Since bc = 6, that makes db = 3 and cd = 3rad3
cd (2) = ac. so ac = 6rad3
so to get ad, you square ac which = 108, square cd which = 3rad3 which equals 27. 108 - 27 = 81. the sqaure root of 81 is 9. ad = 9
6 0
3 years ago
Read 2 more answers
18 Emily is planting a garden. She places fence posts at
otez555 [7]
69 or 420 feet is what i think it is
4 0
3 years ago
Evaluate the formula for B = 9 in.2 and h = 32 in.
Margarita [4]

Answer:

is going to give you a decimal as then you divide it by 2 and then multiply that number by 4 hope this helps

Step-by-step explanation:

4 0
2 years ago
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