Ask question

Ask question

All categories

2 years ago

14

Jakob rolls an 8-sided die that is numbered from 1 through 8 a total of 400 times. About how many times should Jakob expect to r

oll a 5?

2 answers:

Evgen [1.6K]2 years ago

5 0

Answer:

It's 50 or A.) on Ed

Step-by-step explanation:

sergij07 [2.7K]2 years ago

3 0

P(5 on one throw) = 1/8
expected number of 5's in 400 throws = 1/8 * 400 = 50

You might be interested in

Select all sequences that are geometric.

Leto [7]

Answer:

A,C and E

Step-by-step explanation:

because Im the only one thats answered your question so you don't exactly have anything else to go off of

8 0

2 years ago

Help I’m dumb and it’s due soon.

egoroff_w [7]

Answer:

Options A, C and D are correct ones.

Step-by-step explanation:

Options A, C and D are correct.

3 0

3 years ago

41 5<br> ---- = ----- x=?<br> x 2

Stells [14]

$\frac{41}{x}=\frac{5}{2}\\
5x=82\\
x=\frac{82}{5}$

7 0

3 years ago

Read 2 more answers

The surface areas of two similar solids are 340 yd² and 1,158 yd². The volume of the larger solid is 1,712 yd³. What is the volu

ratelena [41]

The ratio of surface area is equal to the ratio of the square of the corresponding dimensions. And ratio of volumes of two solids is equal to the cube of the ratio of the corresponding dimensions .

We start with the relation between ratio of surface area and ratio of corresponding sides. That is

$\frac{340}{1158}=(\frac{x}{y} )^2$

Here x and y are the corresponding sides .

$\frac{x}{y} =\sqrt{\frac{340}{1158} } =0.542$

Let the volume of the smaller one be v

$\frac{v}{1712}=0.542^3$

$v=1712*0.542^3=272$

So for the smaller solid, volume is 272 . And the correct option is the first option .

4 0

3 years ago

The curved part of this figures is a semicircle.

vovangra [49]

First we join the two endpoints of the semicircle and that will be the diameter.

And to find the length of the diameter, we have to use distance formula, with one endpoint (3,2) and the other is (-4,-2) .

SO we get

$Diameter = \sqrt{ {-4-3)^2 +(-2-2)^2 } = \sqrt{49+16} = \sqrt 65$

Radius is half of diameter, so the radius is

$Radius= \frac{ \sqrt{65}}{2}$

Formula of area of circle is

$Area = \pi r^2$

So the area of semicircle is

$=(1/2) \pi ( \frac{ \sqrt{65}}{2})^2 = 8.125 \pi \square \units$

And the other figure is a triangle, with

$Base = 3-(-4)=3+4=7 \\ height = 2-(-2) = 2+2 =4$

$Area = (1/2)*4*7= 14 square units$

Therefore, total area is the sum of area of semicircle and area of triangle,

And we will get

$Total \ area= 14 + 8.125 \pi \ units^2$

Correct option is the third option .

3 0

3 years ago

Read 2 more answers