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3 years ago

Bruce has a pet worm that fell into a well. The well is 26 feet deep. Each day,

Mathematics

1 answer:

Mandarinka [93]3 years ago

4 0

Answer:

3 and 1/2 a day

Step-by-step explanation:

first we begin with a sequence.

8 up 2 down

26-8 = 18 +2 =20

20-8+2 =14

14-8+2=8

8-8

we would not add/subtract 2 because he is out of the well

3 and 1/2 days.

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A student scored 75 and 97 on her first two quizzes. Write and solve a compound inequality to find the possible values for a thi

Rainbow [258]

Answer:

$85 \le \frac{75 + 97 + n}{3} \le 90$ ; $83 \le n \le 98$

Step-by-step explanation:

Score of the first two quizzes: 75 and 97

Let n represent the third score

Average score would be: $\frac{75 + 97 + n}{3}$ .

Given that the average score fall between 85 and 90, this can be represented by the compound inequality as shown below:

$85 \le \frac{75 + 97 + n}{3} \le 90$

Solve for n in each statement that makes up the compound inequality:

$85 \le \frac{75 + 97 + n}{3}$

$85 \le \frac{172 + n}{3}$

Multiply both sides by 3

$85*3 \le 172 + n$

$255 \le 172 + n$

Subtract 172 from each side of the inequality

$255 - 172 \le n$

$83 \le n$

Also,

$\frac{75 + 97 + n}{3} \le 90$

$\frac{172 + n}{3} \le 90$

Multiply both sides by 3

$172 + n \le 90*3$

$172 + n \le 270$

Subtract 172 from both sides of the inequality

$n \le 270 - 172$

$n \le 98$

Combining both together, the possible values of her third quiz score would be:

$83 \le n \le 98$

3 0

2 years ago

Plz help me !!!!!!!!!!!

Artist 52 [7]

Split the second term in 3a^2 - 8a + 4 into two terms

3a^2 - 2a - 6a + 4 = 0

Factor out common terms in the first two terms, then in the last two terms.

a(3a - 2) -2(3a - 2) = 0

Factor out the common term 3a - 2

(3a - 2)(a - 2) = 0

Solve for a;

a = 2/3,2

<u>Answer : B. (2/3,2)</u>

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3 years ago

Test 69,000 on hearing to for divisibility by 2 3 5 9 or 10

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Yes they are correct

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When one number is negative and the other is positive.

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Answer:

yes

Step-by-step explanation:

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