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polet [3.4K]
2 years ago
15

Jana has a number cube numbered 1 to 6. She plans to roll the cube 78 times. Predict the number of times Jana will roll a 2.

Mathematics
1 answer:
Natali5045456 [20]2 years ago
7 0
78/6=13    theres not much to it just divide
                                 


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Simply.... plz someone give me the answer
ch4aika [34]

Answer:

Y= 9xi/4 - 9i - 11

X= 4yi/9 - 4 + 44i/9

7 0
2 years ago
How many liters of soup will fit in this hemispherical pot <br> PlS help
m_a_m_a [10]

Answer:

3888pi cm^3  or   12214.5122372 cm^3

Step-by-step explanation:

To being, let's list out what we know

The volume of a sphere is

V = 4/3(pir^3)

But this is only half of a sphere, so the volume of it should be

V =2/3(pir^3)

With the diameter of the shape being

d = 36

We will first need to find the radius to use the formula above

r = d / 2

 = 36 / 2

 = 18

Now, let's start plugging in values

V = 2/3(pi18^3)

  = 2/3 ( 5832pi)

  = 3888pi   or   12214.5122372

If you have any questions, please let me know in the comments section of this answer! If you could mark this answer as the brainliest, I would greatly appreciate it! :D

4 0
2 years ago
Please solve the eqution<br> Cos4x + cos2x - 2 =0
horrorfan [7]

cos4x = cos2x

We know that:

cos2x = 1-2cos^2 x

==> cos4x = 1-2cos^2 (2x)

Now substitute:

==> 1-2cos^2 (2x) = cos2x

==> 2cos^2 (2x) + cos2x - 1 = 0

Now factor:

==> (2cos2x -1)(cos2x + 1) = 0

==> 2cos2x -1 = 0 ==> cos2x =1/2 ==> 2x= pi/3

==> x1= pi/6 , 7pi/6

==> x1= pi/6 + 2npi

==> x2= 7pi/6 + 2npi

==> cos2x = -1 ==> 2x= pi ==> x3 = pi/2 + 2npi.

<span>==> x= { pi/6+2npi, 7pi/6+2npi, pi/2+2npi}</span>

6 0
3 years ago
Uhm what is the mean of 0,3,6,7,9??
jarptica [38.1K]

Answer:

5

Step-by-step explanation:

0+3+6+7+9=25

25/5=5

6 0
3 years ago
Read 2 more answers
Y=_x+4<br> x + 2y =<br> 8<br> How many solutions dose this linear system have
jeyben [28]

Answer:

X=-1, y=4

Step-by-step explanation:

y = x + 4 \\ x + 2y = 8 \\  =  =  =  =  =  =  =  =  =  =  =  = \\ y - x = 4 \\ x + 2y = 8

by using eliminating property

3y = 12 \\ y = \frac{12}{3}    = 4

by substitution

X=-1

6 0
2 years ago
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