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Harlamova29_29 [7]
3 years ago
12

If you start with a number, add 2/5, then multiply by 7, the result is 6 3/10. What was the original number?

Mathematics
1 answer:
Anettt [7]3 years ago
3 0
(x+2/5)7=63/10
then divide both sides by 7
x+2/5=63/70
subtract 2/5 from both sides
and x= 1/2 

*x=original number
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Thirty-one books are arranged from left to right in order of increasing prices. The price of each book differs by $2 from that o
user100 [1]
The answer for this problem is 2 since it is not specified whether it is adjacent to the right or adjacent to the left.
If it is adjacent to the right, the answer is:

p (k) = 2 * p(1) + 2 * k

If the is adjacent to the left, the answer is:

P (k) = 2 *p(1) +2 * (k-2)
6 0
3 years ago
How to solve all of this
photoshop1234 [79]
Start circle: πd = (3.14)(19) = 59.7

Move diagonally to the circle with the radius of 6.2.

Second circle: 2πr = 2(3.14)(6.2) = 39

Move upwards to the circle with the radius of 10.5

third circle: 2πr = 2(3.14)(10.5) = 66

Move right to the circle with the diameter of 16.6

Fourth circle: πd = (3.14)(16.6) = 52.2

Move down to the circle with the diameter of 7.7

fifth circle: πd = (3.14)(7.7) = 24.2

Move down to the circle with the diameter of 50

Sixth circle: πd = (3.14)(50) = 157.1

Move left to the circle with the radius of 11.8

Seventh circle: 2πr = 2(3.14)(11.8) = 74.1

Move down to the circle with the radius of 38

Eight circle: 2πr = 2(3.14)(38) = 238.8

Move right to the circle with the diameter of 1.1

ninth circle: πd = (3.14)(1.1) = 3.5

Move right to the circle with the radius of 14.8

10th circle = 2πr = 2(3.14)(14.8) = 93

Move up to the end.

Hope this helps :) 
7 0
3 years ago
What is the inverse of y = 3* ?
grin007 [14]
It doesn’t have an inverse because it doesn’t pass the horizontal line test
8 0
2 years ago
How is the product related to the first factor? 3/7x8/9
notka56 [123]
Simplify your regular answer then you'll get it.
7 0
2 years ago
He
RUDIKE [14]
$4680
Since 18% is 18/100 you just have to multiply the $842.4 by the reciprocal of that to find your answer
Reciprocal of 18/100 is 100/18
842.4* 100/18 equals 84240/18
84240/18 equals 4680
3 0
3 years ago
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