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Mashcka [7]
3 years ago
13

Stella has some colored cards that are the same size and shape. • The probability of randomly selecting a blue card is 20%. • Th

e probability of randomly selecting a red card is 30%. What is the probability Stella will randomly select a card that is NOT blue, replace it, then randomly select a card that is red? Helpppp
​
Mathematics
1 answer:
Kobotan [32]3 years ago
7 0

Answer: 0.24

Step-by-step explanation:

The probability of randomly selecting a blue card = 20% = 0.2

The probability of randomly selecting a red card = 30% = 0.3

The probability of not randomly selecting a blue card = 1 - 0.2 = 0.8

The probability of not randomly selecting a red card = 1 - 0.3 = 0.7

Therefore, the probability that Stella will randomly select a card that is not blue, replace it, then randomly select a card that is red will be:

= P(not blue ) × P(red)

= 0.8 × 0.3

= 0.24

The answer is 0.24

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We find the first differences between terms:
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We now find the second differences:
5-3=2; 7-5=2; 9-7=2. Then:

Since these are the same, this sequence is quadratic.
We use (1/2a)n², where a is the second difference:
(1/2*2)n²=1n².

We now use the term number of each term for n:
4 is the 1st term; 1*1²=1.
7 is the 2nd term; 1*2²=4.
12 is the 3rd term; 1*3²=9.
19 is the 4th term; 1*4²=16.
28 is the 5th term: 1*5²=25.

Now we find the difference between the actual terms of the sequence and the numbers we just found:

4-1=3; 7-4=3; 12-9=3; 19-16=3; 28-25=3.

Since this is constant, the sequence is in the form (1/2a)n²+d;
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7 0
3 years ago
What is the standard form of y= 1/4x +6
viktelen [127]

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Standard form is Ax + By = C, so we want x to be on the left side

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Multiply by -4 to get x to be equal to 1.

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3 years ago
Make up a word problem or scenario that uses the equation 7p+10=24. Make sure to elaborate as much as possible.
Nimfa-mama [501]

Given:

The equation is 7p+10=24.

To find:

The scenario that uses the given equation.

Solution:

If p is the price of a good. Initial supply of goods at price 0 is 10 and supply increasing by 7 units if the price increased by 1 unit, then at what price the supply will be 24 units.

According to this scenario,

Total supply = 10+7p

Equate total supply with 24, to find the price at which the supply will be 24 units.

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3 years ago
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