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Lisa [10]
3 years ago
8

Hello im in 11th grade, im currently struggling in two classes: chemistry and spanish. Im already in the second semester, and ju

st realized how lightly ive been taking school. For chemistry, in my first quarter i scored a 60% F, in my second quarter is scored a 68% D, and my semester grade resulted to be a score of a 64% F. I started my second semester and in the third quarter i got a 68% D, and was wondering what my fourth quarter grade would have to be in order to at least have a 70% in the class. When it comes to spanish,in the first quarter i scored a 72% C+, in the second quarter i got a 57% F, and my first semester grade resulted to be a 65% F, in my third quarter i received a 68% D, and was also wondering what my fourth quarter grade would have to be to at least meet the requirement of a 70% C-? (if you are wondering why im bothering to average my first semester grades when i had already failed and would normally already had to retake the class, it is because my school was lenient enough to allow me to raise my grades up during 2nd semester, and average out my 1st and 2nd semester grades. They said if i at least scored a 70% average onces that had average both semesters they wouldn't have me repeat the classes over again)
Mathematics
1 answer:
Katarina [22]3 years ago
7 0
For chemistry you would need to get an 84.
For Spanish you would need to get an 82.
Best of luck
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Answer:

\boxed{4x^{2}  - 48x + 144}

Step-by-step explanation:

Given expression:

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In this case, the first term of (2x - 12)² is "2x" and the second term is "12".

\rightarrowtail (2x)^{2} - 2(2x)(12) + (12)^{2} \ \ \ \ \ \ \ \ \ \ \ \ \ \  [\small\text{First term = a = 2x; Second term = b = 12]}

Now, simplify the expression.

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\rightarrowtail \boxed{4x^{2}  - 48x + 144}

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25 total people

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Similarly, in the third digit's place, we will only have 8 choices because we do not want the digit to be similar to the second digit and the fourth digit. This will go on up until the 19th digit. In the 20th digit, we will also have 9 choices (from 0-9) but we do not want the digit to be similar to the 19th digit. 

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