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murzikaleks [220]
3 years ago
5

Factor each of the following using differences of squares

Mathematics
2 answers:
professor190 [17]3 years ago
8 0
The first is (x+10)(x-10)

The second one is (3x+14)(3x-14)
timofeeve [1]3 years ago
4 0
The first one is (x+10)(x-10)
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Find the slope and y-intercept<br><br> b. y = 1/4x - 6
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Step-by-step explanation:

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On a 40 question test students gain 6 points for each correct answer and lose 0.5 points on each incorrect answer. If everyone r
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Answer:

\text{r}=5.5\text{c}-20

Step-by-step explanation:

GIVEN: On a 40 question test students gain 6 points for each correct answer and lose 0.5 points on each incorrect answer. If everyone required to give an answer to each question.

TO FIND: the formulas that describes how a student's raw score, r, depends on the number of correct answers he or she provided, c.

SOLUTION:

Total number of incorrect questions =40-\text{c}

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Total correct questions =\text{c}

Total marks scored =6\text{c}

Total raw marks \text{r}=\text{total marks gained}-\text{total marks deducted}

                           \text{r}=6\text{c}-(20-0.5\text{c})

                           \text{r}=5.5\text{c}-20

ormulas that describes how a student's raw score, r, depends on the number of correct answers he or she provided, c is  \text{r}=5.5\text{c}-20

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Step-by-step explanation:

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