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IrinaK [193]
2 years ago
12

(2) The scores obtained by a class of

Mathematics
1 answer:
SVETLANKA909090 [29]2 years ago
5 0

Answer:

Below.

Step-by-step explanation:

2)

(a) Prob(exactly 6 marks) =  2/10 = 1/5

(b) Prob(At least 6 marks) = 5/10 = 1/2.

3)

Prob ( Queen of hearts) = 1/52

4)

Probability of a 6 in one throw = 1/6.

So expected number of 6's in 300 throws

= 1/6 * 300

= 50.

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If f(x) = 4(3x - 5), find f^-1(x)
Sloan [31]

Answer:

The answer is A.

Step-by-step explanation:

Lets call f(x)=y, so y= 4*(3*x-5), we want to find 'x', using 'y' as a the variable.

y=12x-20\\ y+20=12x\\ x=\frac{y+20}{12}

Now lets change the name of 'y' to 'x', and 'x' to f^-1(x).

f-1(x) = (x+20)/12

3 0
3 years ago
Can somebody explain to me of how squared 28 equaled 2 squared to 7 please? With step by step explanation If you don’t mind
nikklg [1K]

please see the attached picture for full solution

hope it helps

good luck on your assignment

4 0
3 years ago
Help me please! Have to finish in 5 minutes!!!
uysha [10]
The correct answer would be the second choice.
R = V/I
5 0
3 years ago
Read 2 more answers
In which expression should the exponents be multiplied?
valentina_108 [34]
\left(a^n\right)^m=a^{n\cdot m}\\\\therefore,\ your\ answer:\\\\\left(6^{10}\right)^{-7}=6^{10(-7)}=6^{-70}
6 0
4 years ago
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If the line passes through the point (0,4) and has a slope of -1, find the solution to the system.
soldier1979 [14.2K]

Answer:

y = - x + 4

Step-by-step explanation:

Use point-slope form: y-k = m(x-h) for point (h,k) with slope m

now just plug and chug:

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y-4 = -x

y= -x+4

not sure about what you meant by "solution." Just gonna assume that you were looking for the equation.

3 0
1 year ago
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