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nasty-shy [4]
3 years ago
5

Fill in the boxes to complete the addition. 3/5+1/4

Mathematics
1 answer:
Fynjy0 [20]3 years ago
7 0

Answer:

3/5 + 1/4 = 17/20

Step-by-step explanation:

  • \frac{3}{5} + \frac{1}{4}
  • LCM is 20
  • \frac{12}{20} + \frac{5}{20}
  • \frac{17}{20}
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An electrician needs 6 rolls of electrical wire to wire each room in a house. How many rooms can he wire with 3/4 of a roll of w
Vera_Pavlovna [14]

Answer:

  1/8 room

Step-by-step explanation:

  (3/4 roll)/(6 rolls/room) = (3/4)(1/6) rooms = 1/8 rooms

With 3/4 roll of wire, the electrician can wire 1/8 of a room.

4 0
3 years ago
Eight rooks are placed randomly on a chess board. What is the probability that none of the rooks can capture any of the other ro
Brums [2.3K]

Answer:

9.11*10^-4 %

Step-by-step explanation:

To find the probability, you simply need to find the possible outcomes that allows no rooks to be in danger, and the possible amount of ways to place the rooks.

For the first outcome, you start by putting 1 rook in the first columns, you have 8 possible rows to do this. The next rook in the next column will only have 7 possible rows, as you have to exclude the one where the previous rook is located. The next rook, 6 possibilities, the next 5, and so on. So we conclude that the total amount of ways so that none of the rooks can capture any of the other rooks is 8*7*6*5*4*3*2*1 = 8! = 40320

In order to find the total amount of ways to place the rooks, you can just use a combinatoric:

\left[\begin{array}{ccc}64\\8\end{array}\right]= \frac{64!}{8!(64-8)!} = 4.43*10^9

Then:

P = \frac{40320}{4.43*10^9}*100\%=9.11*10^{-4}\%

5 0
4 years ago
I NEED THIS ASAP ILL GIVE YPU BRAINLIST!
eduard

Answer:

3

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
For which conditions is p ∨ q false?
Gelneren [198K]

Answer:

D)p is false and q is false.

Step-by-step explanation:

This is the case of the disjunction operator. This operator creates a compound statement that:

1. It's true if either simple statement is true

2. It's false if both simple statements are false.

So p and q are statements and the only way the compound statement is false is when both simple statements are false. For instance:

For:

p: "Peter is home"

q: "Charles is home"

The disjunction would look like these two forms:

p v q

Other form to write this is as follows:

Peter is home OR Charles is home.

So the compound statement is false if both Peter and Charles aren't home.

7 0
4 years ago
Read 2 more answers
If (x -y)^2= 200 and x^2 + y^2= 50 what Is the value of xy?
Dvinal [7]
(x-y)^{2}= x^{2} -2xy+ y^{2}   \\  xy=  \frac{x^{2} +y^{2}-(x-y)^{2}}{2} = \frac{50-200}{2} = \frac{-150}{2} =-75
3 0
3 years ago
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