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vlabodo [156]
2 years ago
11

the probability of rolling a 6 on a biased dice is 1/5 1) complete the tree diagram. 2) Work out the probability of rolling two

sixes.

Mathematics
1 answer:
pickupchik [31]2 years ago
6 0

Answer:

Step-by-step explanation:

Not 6 on all rolls in the diagram = 4/5

6 on all rolls in the diagram is 1/5

To find the probablity of rolling two sixes, 1/5 x 1/5 = 4/100 = 0.04 = 4%

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Solve the exponential equation for x. 625 = 5 (7x-3)
posledela

Answer:

<h2>A. x = 1</h2>

Step-by-step explanation:

5^{7x-3}=625\\\\5^{7x-3}=5^4\iff7x-3=4\qquad\text{add 3 to both sides}\\\\7x=7\qquad\text{divide both sides by 7}\\\\x=1

7 0
3 years ago
Which algebraic expression is a polynomial?
Degger [83]

Answer:

the last one is a polynomial

Step-by-step explanation:

8 0
2 years ago
Please someone help me, i need thier solve please my teacher told me to solve them ​
mariarad [96]

Answer:

A. Domain : (-∞, ∞)

B. Function is increasing in the interval (-2, 0) and (2, ∞)

   Decreasing in the interval of (-∞, -2) and (0, 2).

Step-by-step explanation:

A. Given function is, y = |2x - 1|

This function is the transformed form of the parent function, y = |x|

Domain of the parent function is { x | x is a set of real numbers}

Therefore, domain of the transformed function will be the same as the domain of the parent function.

Domain of the function = {x | x is a real number}

B. Given function is f(x) = (x^2-4) ^{\frac{2}{3} }

Domain of the function : (-∞, ∞)

Critical points of the function are,

⇒ x = 0, ±2

Now we find the three intervals where we have to check the function to be increasing or decreasing.

(-∞ -2), (-2, 0), (0, 2), (2, ∞)

Derivative of the function f(x),

f'(x) = \frac{4x}{3(x^2-4)^{\frac{1}{3} } }

Here, f'(x) < 0 for (-∞, -2)

f'(x) > 0 for (-2, 0)

f'(x) < 0 for (0, 2)

f'(x) > 0 for (2, ∞)

Therefore, given function is increasing in the interval (-2, 0) and (2, ∞)

And it's decreasing in the interval of (-∞, -2), and (0, 2).

6 0
3 years ago
Please help me with this
julia-pushkina [17]

As the first step, you have to distribute

2x - 12 + 4x + 16 = 40        Now combine the like items

6x + 4 = 40        

6x = 36

x = 6

7 0
2 years ago
Abid buys some bags of buttons.
omeli [17]

Step-by-step explanation:

A = 2 x 3^4 x 5

B = 2^3 x 3^2 x 5^2

b) Write down the highest common factor (HCF) of A and B.

8 0
3 years ago
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