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3 years ago

Evaluate function expression -2×f(-6)-7xg(-7)

Mathematics

2 answers:

marin [14]3 years ago

5 0

Answer:

-12xf+49xg

Step-by-step explanation:

2xf(-6)-7xg(-7)

-2xf*6+7xg*7

Gives you -12xf+49xg

SOVA2 [1]3 years ago

5 0

Answer: wym

Step-by-step explanation:

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3 years ago

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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

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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:

$83 \le n \le 98$

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Answer:

Step-by-step explanation:

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Evaluate function expression -2×f(-6)-7xg(-7)​

Evaluate function expression -2×f(-6)-7xg(-7)