The solution is x = 36, and the sum of the digits is 3 + 6 = 9.
<h3>
How to find the value of the number?</h3>
We know that, if we define x as the number, we have:
x + x^2 + √x = 1338
Now we need to find the value of x.
Trivially, we can graph the function:
y = x + x^2 + √x
We can see that the solution of x + x^2 + √x = 1338 is
x = 36
36 + 36^2 + √36 = 1338
Then the sum of the digits of the number is 3 + 6 = 9
If you want to learn more about algebra:
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For 30 hours Julio is paid 30r dollars.
For the extra 5 hours he worked he earns 5*1.4r = 7r dollars
So the equation is
30r + 7r = 436.60
37r = 436.60
r = 436.60 / 37 = 11.80
His normal hourly rate is $11.80 answer
Assuming y is the price each person pays and each person gets and appetizer and a main dish...
y = ($9 + $6) × 4 people × 1/4
y = ($15) × 4 × 1/4
y = $60 × 1/4
y = $15 each
Answer:
$16.99
Step-by-step explanation:
The first step into solving this requires you to find out what 15% of $19.99 is. In order to do that, you must multiply the number (19.99) by the decimal form of the percentile (15%). To find a decimal form of a percent sign, you must simply move the decimal two spots to the left, to change the denominator to 100. A number always has a denominator, even if it isn't shown. in this case, it is 15/1, and we have to convert it to 15/100 so all you have to do is divide 15 by 100, or move the decimal to the left 2 spots. The answer you should get is 0.15
I normally don't round until I have the <em>final</em> answer, just so the numbers aren't off. So then, what you need to do, is multiply 19.99 by your newly found decimal. You should get 2.9985. Now, the question asks for how much the cartridge would cost if it were 15% off, so therefore you must subtract your answer from the original number (19.99), and should get 16.9915. Now is the time you should simplify to the nearest hundredth, and should get $16.99 as your final answer.
Answer:
The answer is 42
Step-by-step explanation:
