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faltersainse [42]
3 years ago
15

You drive your car for three hours at an average speed of 130 km/h how far did you go

Mathematics
2 answers:
aliina [53]3 years ago
8 0
About 390 km because you drive 130 km per hour so 130 times 3 is 390
ValentinkaMS [17]3 years ago
4 0

Answer:

390 KM

Step-by-step explanation:

Every 130 kilometers, an hour passes by. This means, that if you drive for 3 hours, you must multiply those 130 kilometers by 3.

130*3=<u>390</u>

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3 years ago
A 32-ounce package of a snack mix is 24 percent pretzels. How many ounces are pretzels?
xz_007 [3.2K]
Answer: The correct answer is Choice D.

If 24 percent of the snack mix is pretzel, we simply need to multiply the total number of ounces by 0.24.

0.24 x 32 = 7.68

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8 0
3 years ago
Read 2 more answers
Eights rooks are placed randomly on a chess board. What is the probability that none of the rooks can capture any of the other r
erastova [34]

Answer:

The probability is \frac{56!}{64!}

Step-by-step explanation:

We can divide the amount of favourable cases by the total amount of cases.

The total amount of cases is the total amount of ways to put 8 rooks on a chessboard. Since a chessboard has 64 squares, this number is the combinatorial number of 64 with 8, 64 \choose 8 .

For a favourable case, you need one rook on each column, and for each column the correspondent rook should be in a diferent row than the rest of the rooks. A favourable case can be represented by a bijective function  f : A \rightarrow A , with A = {1,2,3,4,5,6,7,8}. f(i) = j represents that the rook located in the column i is located in the row j.

Thus, the total of favourable cases is equal to the total amount of bijective functions between a set of 8 elements. This amount is 8!, because we have 8 possibilities for the first column, 7 for the second one, 6 on the third one, and so on.

We can conclude that the probability for 8 rooks not being able to capture themselves is

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7 0
3 years ago
A larger number is double the sum of 3 and a smaller number. The larger number is 2 less than 3 times the smaller number. If y r
Ratling [72]
Y > x
y = 2(3+x)
y = 3x-2
------------------------------
2(3+x) = 3x-2
2(3+x) - (3x-2) = 0
6 + 2x -3x + 2 = 0
8 -x = 0
x = 8
---------------------------
y = 2(3+x) = 2(3+8) = 22
y = 3x-2 = 3*8 -2 = 22
----------------------------------
x = 8 ; y = 22


7 0
3 years ago
Read 2 more answers
What is 3/7 in words
Marrrta [24]
Three sevenths !!!!!!
4 0
3 years ago
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