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Andrew [12]
3 years ago
7

I am a 2 digit number the sum of my digits is 12. the ones digit is twice the tens digit? who am i?

Mathematics
1 answer:
Bas_tet [7]3 years ago
5 0

Answer:

84

Step-by-step explanation:

let a be the 1's digit and b the 10's digit, then

a = 2b ← twice the 10's digit, thus

sum = 2b + b = 12, that is

3b = 12 ( divide both sides by 3 )

b = 4

and a = 2b = 2 × 4 = 8

The 2 digit number is 84

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Step-by-step explanation:

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Jane Marko buys a car for 43,900. in three years, the car depreciates 48% in value. how much is the car worth in three years ?
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Let's take this step by step.

A car cost $43,900.

If it depreciates 48% in value in 3 years, we must find 48% of $43,900, and subtract that from its total value.

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2 years ago
What is the product?
bonufazy [111]

\qquad \qquad\huge \underline{\boxed{\sf Answer}}

Here's the solution ~

\qquad \sf  \dashrightarrow \: (3 {a}^{2}  {b}^{4} )( - 8a {b}^{3} )

\qquad \sf  \dashrightarrow \: (3 \times  - 8)( {a}^{2}  \times a)(b {}^{4} \times  {b}^{3}  )

\qquad \sf  \dashrightarrow \:  - 24( {a}^{3} )( {b}^{7} )

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There are infinite equations for 2 + 2. The gap between any number can be infinite if you keep giving it more numerical content. However, solving 2 + 2 can be very tricky.

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