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bogdanovich [222]
3 years ago
15

A King in ancient times agreed to reward the inventor of chess with one grain of wheat on the first of the 64 squares of a chess

board. On the second square the king would place to grasowe
on the third square four grains of wheat, and on the fourth square eight grains of wheat. If the amount of wheat is doubled in this way on each of the remaining squares how many of
should be placed on square 13? Also find the total number of grains of wheat on the board at this time and the total weight in pounds. Assume that each grant what we 7000 pound)
How many grains of wheat should be placed on square 13?
grains​
Mathematics
1 answer:
Ivahew [28]3 years ago
8 0

Answer:

1. 65536

2. 458752000

Step-by-step explanation:

2 to the power of 16 is 65536

458752000=65536*7000

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3000 exercise books are arranged into 3 piles. The first pile has 10 more books than the second pile. The number of books in the
pochemuha

Answer:

598 books

Step-by-step explanation:

Let x be the number of books in the 3rd pile. We will have then:

1st pile: 2x + 10

2nd pile: 2x

3rd pile: x

3000 = (2x + 10) + (2x) + (x)

3000 = 5x + 10

3000 - 10 = 5x

2990 = 5x

2990/5 = x

x = 598 books in the third pile!

We can check that:

3000 = 2*598 + 10 + 2*598 + 598

3000 = 1196 + 10 + 1196 + 598

3000 = 3000 CHECK!

7 0
2 years ago
Jalen randomly chooses a number from 1 - 10 . What Is the probability he chooses a number greater than 3?
RUDIKE [14]

The answer will be D. 7/10 because you have 10 numbers and you want to have a number greater than 3 so it would be 10-3=7 and 7 would go over 10 because there are 7 numbers greater than 3 but less than 10.

8 0
3 years ago
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Nine out of 10 students prefer math class over lunch how many students do not prefer math is 200 students were asked
max2010maxim [7]

Answer:

20 students prefer math



4 0
3 years ago
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A meteorologist forecasted that Monday's hight temperature would be 76F. On Monday, the temperature reached 80F. What is the per
mihalych1998 [28]

Answer: 5%

Step-by-step explanation:

A meteorologist predicted that Monday's hight temperature would be 76F and on Monday, the temperature reached 80F.

The percentage error will be

Percentage error=

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= 76-80/80 × 100

= -4/80 × 100

=4/80 × 100

= 400/80

= 5%

The percentage error is 5%.

6 0
3 years ago
Shira has 20 books on her bookshelf. Of those 15 are about horses, the rest are nature books. What fraction of Shiras books are
givi [52]

Answer:

1/4

Step-by-step explanation:

15 out of the 20 books are horses. 5 of those are nature. 5/20 is the fraction, but can be simplified to 1/4

6 0
3 years ago
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