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denpristay [2]
4 years ago
6

The sum of the two digits of a number is 9. If the tens digit is one-half the units digit, what is the number?

Mathematics
2 answers:
Paul [167]4 years ago
7 0

Answer:

t=\frac{u}{2} would complete the system

Number is 36

Step-by-step explanation:

Let t = the tens digit, u = the units digit

We have the sum of the two digits of a number is 9

          t + u = 9

We also have the tens digit is one-half the units digit

       t=\frac{u}{2}

Substituting

            \frac{u}{2}+u=9\\\\\frac{3u}{2}=9\\\\u=6

               t + 6 = 9

               t = 3

So the number is 36.

Arte-miy333 [17]4 years ago
6 0

Answer: correct answer is t=1/2u

Step-by-step explanation:

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3 years ago
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8 0
2 years ago
Make r the subject of the formula t= r
Evgen [1.6K]
I hope this helps you



t=r/r-3



t. (r-3)=r



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3 0
3 years ago
Please helppp i need this done and i dont know what to do
ioda

Answer:

FRACTION                               DECIMAL

1/5( 1*2/5*2=2/10)                         0.2

3/10                                               0.3

1/2(1*5/2*5=5/10)                          0.5

7/10                                              0.7

3/4(3*25/4*25=75/100)               0.75

<u><em>NOTE</em></u>:   To conert a fraction into decimal, it is required that the denominator be changed into 10, 100, 1000 and so on.....   By changing the denominator, we have to first select the appropriate number by which you will be able to convert it into 10, 100 or 1000, and you are also required to multiply that number with the denominator as well as numerator. In the first question, 1/5 we can convert the denoinator into 10, 100 or 1000 as the denominator is 5, whatever you choose, the answer will be correct, so, 1*2/5*2 gives 2/10. Since 10 has one zero, the decimal point moves one time towards the left, which gives 0.2. And you can do the rest according to this way, considering the number of zeroes.

5 0
3 years ago
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