All categories

2 years ago

T2.T?

Mathematics

1 answer:

Setler [38]2 years ago

4 0

9514 1404 393

Answer:

Step-by-step explanation:

Reversing the digits changes the value by a factor of 9 times the difference in the digit values. Here, this means the digits differ by 27/9 = 3. If one digit is double the other, the higher digit is 2×3 = 6.

The number is 63.

_____

If you like, you can work through the algebra of it. Let the original number have tens digit x and ones digit y.

original number value = 10x +y

reversed number value = 10y +x

difference of values = 27 = (10x +y) -(10y +x) = 9(x -y)

The tens digit is twice the ones digit, so we have ...

x = 2y

Substituting in the difference equation, we have ...

27 = 9(x -y)

3 = (2y -y) = y . . . . . divide by 9, substitute for x

x = 2(3) = 6

The number is 10x+y = 63.

You might be interested in

HELLLLLLLLLLLLLLLLLLLLLP

kkurt [141]

So 10/2 simplified is 5/1 which is on point 5. -9/2 is already simplified so in decimal form it is -4.5 which is -4 1/2, so you go down from 0 and mark it right where the BLUE dot is and the GREEN dot is 5/1. Hope this helps! :)

6 0

2 years ago

5 times the difference of a number and 20 is the same as half the sum of 4 more than four times a number

Alona [7]

5*(n-20)= (4n+4) / 2 is the equation, please say what you need answered.

5 0

2 years ago

Insert 2 geometric means between -32 and 4

denis23 [38]

Answer:

16, -8

Step-by-step explanation:

Let the terms of the geometric sequence be $a, ar, ar^2, ar^3$ .

We know that $a=-32$ and thus, $-32r^3=4 \implies r=-1/2$ .

This means $ar=(-32)(-1/2)=16$ and $ar^2=-32(1/2)^2=-8$ .

6 0

6 months ago

Need help finding D=___

lesya692 [45]

A straight line is 180 degrees and 144 is on a straight line. So, 180-144 which is 36. So, now we know 2 angles and the Degrees of a triangle is 180 degrees.
36+76+d= 180 D= 68

4 0

2 years ago

Let's say that your sibling babysat your neighbor for 1 hour and earned $12, and on another night you babysat the same neighbor

irinina [24]

Answer:

uy would ve usjebbvdhbxjejkeke

3 0

2 years ago