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raketka [301]
3 years ago
7

: Out of 100 students, 50 have a laptop computer and 30 have a desktop, and 15 have both a laptop and desktop computer. What is

the probability that a randomly selected student who has a desktop also has a laptop?
Mathematics
1 answer:
Nadya [2.5K]3 years ago
6 0

Answer:

30/100 I think but I think I am right.

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What is the constant of proportionality in the equation y=0.41x?
schepotkina [342]
The answer to this question is 0.41
6 0
3 years ago
James defines a circle as "the set of all the points equidistant from a given point." His statement is not precise enough becaus
Setler [38]
Okay so James needs to define a circle
8 0
3 years ago
Read 2 more answers
I need help with this please....Thanks
IrinaK [193]

Answer:

The total cost of redecoration is £66, that is less than £75. Tenant can decorate the room for the budget set.

Step-by-step explanation:

Lets start calculating the areas of shorter and longer walls.

The area of shorter wall is

2.65m*2.98m=7.897m^2.

The area of longer wall is

3.94m*2,65m=10.441m^2.

Together the area of one long and one short wall is

7.897m^2+10.441m^2=18.338m^2.

The area to be painted ( one short and one long wall) is 18.338m^2 that is less than 30m^2, and hence only one tin of paint is needed (costs £16).

If there is assumed that the sheets of wallpaper must be whole from floor to ceiling, the calculations are following.

We get from one roll

10m/2.65m=3.77 sheets; we can use only 3 of them

The width of the walls is 3,94m+2,98m=6,92m,

and division gives 6.92m/0.52m=13,3... .

Hence it requires 14 sheets, that is 5 rolls of wallpaper.

Wallpaper costs 5*£10=£50 and altogether it is needed £50+£16=£66 to redecorate the room.

7 0
3 years ago
The given figure is a cylinder. The radius of
lesantik [10]

Answer:

11403.98133

Step-by-step explanation:

V = πr^2h = π·11^2·30 ≈ 11403.98133

8 0
3 years ago
URGENT HELP PLS PLS PLS
Gennadij [26K]

Answer:

15 kg

Step-by-step explanation:

Radius of a solid sphere : mass of a solid sphere

3 cm : 9 kg

Find the mass of a sphere of the same material of radius 5 cm

Radius of a solid sphere : mass of a solid sphere

5 cm : x kg

Equate both ratios to find x

3 cm : 9 kg = 5 cm : x kg

3/9 = 5/x

3 * x = 9 * 5

3x = 45

x = 45/3

x = 15 kg

The mass of a sphere of the same material of radius 5 cm is 15 kg

7 0
3 years ago
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