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rodikova [14]
4 years ago
7

Write 45 in the form k squareroot 5 where k is an integer

Mathematics
1 answer:
Slav-nsk [51]4 years ago
8 0
45=k√5
times both sides by √5
45√5=5k
divide both sides by 5
9√5=k
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I need help pls and thank you
Verdich [7]
The answer is 56 !
Your welcome :) !
6 0
3 years ago
Someone please help i need this now i will give brainllest to whoever gets it right? NO LINKS!!!!!!!!
vivado [14]

Step-by-step explanation:

Per year it goes up by $180

What about in 5years?

180×5=900

1400+900=2300

=$2300

8 0
3 years ago
Read 2 more answers
A Stairway consists of 18 stairs,each 6 5/8 inches high.what is the vertical height of the Stairway?
Klio2033 [76]
I don't know if this is correct or not, but I did 5/8 first to get the decimal and got .625. Then adding the 6, you get 6.625. Then I multiplied 18 by 6.625, and got 119.25 inches. 

Again, I don't know if that's right, but that's how I would've solved it. 

:)
7 0
3 years ago
A probability experiment is conducted in which the sample space of the experiment is upper s equals startset 4 comma 5 comma 6 c
olchik [2.2K]
The correct question statement is:

A probability experiment is conducted in which the sample space of the experiment is S = {4,5,6,7,8,9,10,11,12,13,14,15}. Let event E={7,8,9,10,11,12,13,14,15}. Assume each outcome is equally likely. List the outcomes in E^{c}. Find P(E^{c}).

Solution:

Part 1:

E^{c} means compliment of the set E. A compliment of a set can be obtained by finding the difference of the set from the universal set. The universal set is the set which contains all the possible outcomes of the events which is S in this case.

So, compliment of E will be equal to S - E. S - E will result in all those elements of S which are not present in E. So, we can write:

E^{c}=S-E \\  \\ 
E^{c}=(4,5,6,7,8,9,10,11,12,13,14,15)-(7,8,9,10,11,12,13,14,15) \\  \\ 
E^{c}=(4,5,6)

Thus the set compliment of E will contain the elements {4,5,6}.So

E^{c} = {4,5,6}

Part 2)

P(E^{c}) means probability that if we select any number from the Sample Space S, it will belong the set E compliment.

P(E^{c}) = (Number of Elements in E^{c})/Number of elements in S

Number of elements in set S = n(S) = 12
Number of elements in set E^{c} = n(E^{c})=3

So, 

P(E^{c})= \frac{n(E^{c}) }{n(S)} \\  \\ 
P(E^{c})= \frac{3}{12} \\  \\ 
P(E^{c})= \frac{1}{4}
7 0
3 years ago
Solve for x.<br> 40°<br> x + 71<br> 75°
dangina [55]

Answer:

x = -6.

Step-by-step explanation:

First thing to notice is that this is the third angle in a triangle, and all 3 angles have to equal 180.

Subtract 75 and 40 from 180 to get the missing angles value.

180 - 75 - 40 = 65

So now we know the missing angle has to be 65, or can be written as:

x + 71 = 65.

To solve this, just subtract 71 from both sides.

x = -6.

8 0
2 years ago
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