The sum of the two fractional number, which consist in the variable <em>x</em> is in the polynomial function,
<h3>What is the sum of fraction number?</h3>
Fraction number is the number which is a part of a whole number. It is written with a numerator and denominator.
Fraction number are written as,
Here (a) is the numerator and (b) is the denominator.
To find the sum of two fraction numbers, cross multiply both the numbers or find the least common factor as denominator.
The first fraction number given in the problem is,
The second fraction number given in the problem is,
Let the sum of these number is f(x). Thus,
Solve it further as,
Thus, the sum of the two fractional number is,
Learn more about the fraction number here:
brainly.com/question/78672
Answer:
Step-by-step explanation:
To start calculating, we first need to make some proof.
Firstly, since AB = AC, we know that ΔABC is isosceles, which means that ∠ABC = ∠ACB.
Now, looking only to ΔBDE and ΔCDF, we can see that they are similar, because the two of its angles are congruent:
∠BED=∠CFD
∠DBE=∠DCF
To make it easier to visualize which are the corresponding vertexes, we can draw them like this:
And we need to remember that BC is 24, so:
BD+CD=24
Since the triangles are similar, their corresponding sides have constant ratio, which we can calculate from the corresponding sides DE and CF:
This ratio is the same for the other corresponding sides, so we can apply that for BD and CD:
Thus, the measure of CF is approximately 13, alternative D.
Alright so first you want to find out how you take 30% off of $30. The first step is to ask yourself, what's 30% of $30? All you have to do is make the percentage into a decimal like you did and multiply .30 times 30. That gets you 9. So 9 is 30% of $30, but since it said the original 30 was marked down by that much, it means subtract. 30-9=21.
For the second part, you pretty much do the same thing but using the 21 you just got and taking away 20% this time. Same process so .20 times 21=4.2, and take the 4.2 away from 21 to get 21-4.2=16.8.
Convert that to dollars to see that the final price is $16.80.
Just a tip, a lot of people will forget the subtraction part after they find the percentage part. Most of these type questions are two steps like that so don't forget to subtract when needed. Lmk if you still have questions :)
Answer:
{x| x is a real number}
Step-by-step explanation:
f(x) is defined for all values of x, so the domain is ...
{x| x is a real number}
Answer:
-11≤x
Step-by-step explanation:
Given
6.7 ≥ -0.2x +4.5----------------collect like terms
6.7-4.5 ≥ -0.2x--------------divide by -0.2 both sides
2.2/-0.2 ≥ -0.2/-0.2x-------------------reverse the sign
-11 ≤ x
