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zepelin [54]
3 years ago
13

In a two-digit number, the units digit is twice the tens digit. If the number is doubled, it will be 9 more than the number reve

rsed. Find the number. :) Thanks!
Mathematics
2 answers:
snow_lady [41]3 years ago
6 0
We know that the ones digit is 2x the tens digit. The number has to be two digits, so this leaves the options of 12, 24, 36, and 48.

Next, we double each number.
12 x 2 is 24
24 x 2 is 48
36 x 2 is 72
48 x 2 is 96

And subtract 9 from each of those. 15, 39, 63, and 87.

63 backwards is 36. The number you are looking for is 36. :)
taurus [48]3 years ago
5 0
10(2x)+x 
21x is the original number

12x is the reversed number
24x is the reversed then doubled number

Set up an equation:
24x=21x+9
3x=9
x=3

The original number is 63 and the reversed number is 36, which then is 72 when doubled.
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Please help me with this Statistics problem
Cerrena [4.2K]
It would be the first answer. Bubble. I don't know what you call it. But yeah, it's the first one.
7 0
2 years ago
A homeowner wants several small dormers built on his roof to admit light. They will be in the shape of isosceles triangles whose
Vlad1618 [11]
P = s + (s + 5) + (s + 5) This represents the two sides that are 5 inches longer than the base (s + 5) and the base (s).
Simplifying.
100 = 3s + 10
subtract 10 from both sides
 90 = 3s
divide both sides by 3
30 = s
base = 30
sides = 35

CHECK 30 + 35 + 35 = 100

4 0
3 years ago
At one time the price of gasoline was $1.279 a gallon. Then the price
ELEN [110]

Answer:

1.6627 (money wise, $1.66)

Step-by-step explanation:

Since its 130%, you know there was already a whole increase. So first you would do 1.279 + 1.279, which would give you 2.558. Then you need to calculate 30% of 1.279 for the rest of the increase. That gives you 0.3837 Add 2.558 and 0.3837 together, which would give you 2.9417. To get the INCREASE, you would have to subtract the new total from the original price, so 2.9417 - 1.279. This would give you 1.6627.

5 0
2 years ago
Helpp please quick!!!!
lesya692 [45]

Answer:

A) Leg

Step-by-step explanation:

In a right triangle, the side that is opposite of the right angle is the hypotenuse. It is also the longest side of the triangle.

Since side 'a' makes up a right angle and it's a shorter piece, it is a leg of the triangle.

Hope this helps.

4 0
3 years ago
Choose the equation below whose axis of symmetry is x = 0. (1 point) y = x2 + 2x y = x2 − 16x + 58 y = x2 + 2 y = x2 − 4x + 2
anygoal [31]
The equation y = x^2 has axis of symmetry of  x = 0

The answer to the question is y = x^2 + 2  which is y = x^2 moved vertically up to 2 units
6 0
3 years ago
Read 2 more answers
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