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Paha777 [63]
3 years ago
10

A bag of marbles contains 3 yellow marbles, 4 blue marbles, akd 8 orange marbles. Which of the following is true of

Mathematics
1 answer:
mamaluj [8]3 years ago
6 0

Answer:

B. This event will not happen.

C. The probability is 0.

Step-by-step explanation:

Only B and C can be answers because there are no green marbles so how can you select a green marble when there aren't any. The probility is 0 which means never going to happen.

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What is the slope of a line that passes through (6,4) and (-1, 3)
pshichka [43]

Answer:

C) 1/7

Step-by-step explanation:

so idk what the formula is called but it looks like this:

y2-y1/x2-x1 and if you plug in the numbers then you'll get the answer

3 - 4/-1 - 6 = -1/-7 = 1/7

you can also switch the numbers your answer will always be the same

4 - 3/6 - (-1) = 1/7

so the answer is c

4 0
4 years ago
1] If 221ₓ= 25₁₀ find X<br> 2] if 3ₓ + 34ₓ - 40ₓ = 0 find x<br> 3] if 23ₓ = 1111₂ find x
Olin [163]

1.

2\cdot x^2+2\cdot x^1+1\cdot x^0=25\\2x^2+2x+1=25\\2x^2+2x-24=0\\x^2+x-12=0\\x^2+4x-3x-12=0\\x(x+4)-3(x+4)=0\\(x-3)(x+4)=0\\x=3 \vee x=-4

The base can't be negative, therefore x=3.

2.

3\cdot x^0+3\cdot x^1+4\cdot x^0-4\cdot x^1+0\cdot x^0=0\\3+3x+4-4x=0\\x=7

3.

2\cdot x^1+3\cdotx^0=1\cdot 2^3+1\cdot2^2+1\cdot2^1+1\cdot2^0\\2x+1=8+4+2+1\\2x=14\\x=7

5 0
2 years ago
An urn contains ten chips. An unknown number of chips are white' the others are red. We wish to test:
Olin [163]

Answer:

Let’s denote X to be the number of white chips in the sample and E be the event that exactly half of the chips  are white. Then,

a) Find α

α = P (reject H0 | H0 is true) = P (X ≥ 2|E)  

  = P (X = 2|E) + P (X = 3|E),    

We took two case, as we can draw only only three chips with two or more white to reject H0, it means we can only take 2 white chips or 3, not more, we get solution

  =  (5C2 * 5C1)/10C3  +  (5C3 * 5C0)/10C3

  =  0.5

So,  α = 0.5

b) Find β

i) Let E1 be the event that the urn contains 6 white and 4 red chips. (As given)

β = P (accept H0 | E1) = P (X ≤ 1|E1)

  =  (6C0 * 4C3)/10C3  +  (6C1 * 4C2)/10C3

 = 1/3

 = 0.333

So, β = 0.333

i) Let E2 be the event that the urn contains 7 white and 3 red chips. (As given)

β = P (accept H0 | E2) = P (X ≤ 1|E2)

  =  (7C0 * 3C3)/10C3  +  (7C1 * 3C2)/10C3

 = 11/60

 = 0.183

So, β = 0.183

5 0
4 years ago
A flower show has an inventory of 60 tulips and 100 roses. Which equation is correct?
Zinaida [17]

Answer:

The correct equitation is 60=\frac{3}{5}\times10060=

5

3

×100 OR 100=\frac{5}{3}\times60100=

3

5

×60

Step-by-step explanation:

To determine:

A flower show has an inventory of 60 tulips and 100 roses?

Information Fetching and Solution Steps:

A flower show has an inventory of

60 tulips

100 roses

So,

60=\frac{3}{5}\times10060=

5

3

×100

or

100=\frac{5}{3}\times60100=

3

5

×60

Other options can not be true as they do not satisfy the equation. For example,

60 = 3\times 10060=3×100 can not be true as the L.H.S ≠ R.H.S

Therefore, the correct equitation is 60=\frac{3}{5}\times10060=

5

3

×100 OR 100=\frac{5}{3}\times60100=

3

5

×60

5 0
3 years ago
Death will most likely occur following exposure to: 100 R's 200 R's 500 R's
Marat540 [252]
500 rs is the correct anwser
8 0
3 years ago
Read 2 more answers
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