The number is composed by two digits, let them be ab, so we have:
a + b = 11
this is a pseudo-equation, we are not multiplying ab or ba, is just the digits order.
ba = ab + 9
The pairs of numbers that could comply with the first equation are:
(2,9)
<span>(3,8)
</span><span>(4,7)
</span><span>(5,6)
</span>But only the last couple <span>(5,6) comply as well with the second condition. Because 65 = 56 + 9
Therefore the unknown number is 56</span>
<span>The tenths place is to the right of the decimal point. Our rounded answer will stop at the tenths place.
We use the hundredths place to help us determine the value that needs to be in the tenths place.
If the value in the hundredths place is 5 or above "we give it a shove."
If the value is four or below, "we let it go."
In this example, the number is 6, which is "5 or above." So we give it a shove. This means that we round it up from 5 to 6.</span>
Answer: The answer is 75
Step-by-step explanation:
<span>y+4=2/3(x+7)
</span><span>Multiplying both sides by the denominator which is 3:
</span>3(y+4) = 3(2/3) * (x+7)
3y+12=2x+14
Subtract 3y:
12 = 2x - 3y + 14
Subtract 14
-2 = 2x - 3y
