A number cube with six sides is rolled seven times. The probability of getting a 4 exactly twice is? HELP

Mathematics

2 answers:

Leni [432]3 years ago

8 0

Answer:

Step-by-step explanation:

1/6 if you roll it after those 7 times.

igor_vitrenko [27]3 years ago

6 0

Answer:

0.234 as a decimal

Step-by-step explanation:

the formula is

nCk(P)^k(1-P)^n-k

for binomial formula

You might be interested in

Marilee is trying to prove the Pythagorean Theorem. She draws a right triangle. What should she do next?

ss7ja [257]

<span>Draw triangles with side lengths equal to the sides of the triangle.</span>

4 0

4 years ago

Thi sis the question

jek_recluse [69]

$\text{Given that,}\\\\x^2 + \dfrac1{x^2} = 38\\\\\\(i)\\\\\left(x-\dfrac 1x \right)^2 = x^2 + \dfrac 1{x^2} - 2 \cdot x \cdot \dfrac 1x\\\\\\\implies \left(x-\dfrac 1x \right)^2 = 38 -2 = 36\\\\\implies x - \dfrac 1x = \pm\sqrt{36} = \pm 6 \\\\\\(ii)\\\\x^2 + \dfrac 1{x^2} = 38\\\\\\\implies \left(x^2 + \dfrac 1{x^2} \right)^2 = 38^2\\\\\\\implies x^4 + \dfrac 1{x^4} + 2\cdot x^2 \cdot \dfrac 1{x^2} = 1444\\\\\\\implies x^4 + \dfrac 1{x^4} + 2 = 1444\\\\\\$

$\implies x^4 +\dfrac 1{x^4} = 1444-2 = 1442$

7 0

2 years ago

O+2a+b-2o-b+o so what is the answer

lana66690 [7]

Assuming O=o

group then add like terms

1o+2a+1b-2o-1b+1o=
1o+1o-2o+2a+1b-1b=
0+2a+0=
2a

4 0

4 years ago

A furniture store received an order for 3,456 chairs. they can fit 9 chairs in a large shipping box. how many shipping boxes wil

kykrilka [37]

This is simple :)
If 9 chairs can fit in one box, and you have 3,456 chairs, just divide how many chairs you have by how many can fit in the box in order to find how many boxes you will need.

3,456/9 = 384
384 boxes will be needed

7 0

4 years ago

Write this problem in lowest terms. need lots of help

a_sh-v [17]

The answer is B. 5v/49w

4 0

4 years ago