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asiababbie33
15.09.2019 •
Mathematics
What is the product of 5 7/10 - 5/18
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Ответ:
244/45
Step-by-step explanation:
Simplify the following:
5 + 7/10 - 5/18
Put 5 + 7/10 - 5/18 over the common denominator 90. 5 + 7/10 - 5/18 = (90×5)/90 + (9×7)/90 + (5 (-5))/90:
(90×5)/90 + (9×7)/90 + (5 (-5))/90
90×5 = 450:
450/90 + (9×7)/90 + (5 (-5))/90
9×7 = 63:
450/90 + 63/90 + (5 (-5))/90
5 (-5) = -25:
450/90 + 63/90 + (-25)/90
450/90 + 63/90 - 25/90 = (450 + 63 - 25)/90:
(450 + 63 - 25)/90
| 1 | |
| 4 | 5 | 0
+ | | 6 | 3
| 5 | 1 | 3:
(513 - 25)/90
| | 10 |
| 4 | 0 | 13
| 5 | 1 | 3
- | | 2 | 5
| 4 | 8 | 8:
488/90
The gcd of 488 and 90 is 2, so 488/90 = (2×244)/(2×45) = 2/2×244/45 = 244/45:
244/45
Ответ:
Our x-intercepts are at:
Our y-intercept is (0, -10).
Step-by-step explanation:
We have the function:
And we know that one factor is:
Since we know one factor, we can use synthetic division to find the depressed polynomial, then continue factoring to find the remaining zeros (x-intercepts).
To find the y-intercept, we can simply substitute 0 for x and evaluate. This can be done anytime.
We can apply synthetic division for a polynomial P(x) divided by a binomial in the form (x-a).
Since our factor is (x-5), a=5.
Please refer to the attachment below for the synthetic division.
So, we are left with:
The remaining factor is now a quadratic. This can be easily factored:
To find our zeros, set our function f(x) to 0:
Then by the Zero Product Property:
Hence, our x-intercepts are:
To find our y-intercept, we can substitute 0 for x and evaluate. Hence:
Evaluate:
So, our y-intercept is at (0, -10).