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2 years ago

Which expression is NOT equivalent to 12x + 18y?

Mathematics

1 answer:

vampirchik [111]2 years ago

5 0

Answer:

caca

Step-by-step explanation:

caca

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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

Which expression can be used to find the volume<br> of the rectangular prism in cubic centimeters?

Marysya12 [62]

20,825 because I think you just multiply 245 and 85 and that should be the answer

6 0

3 years ago

What are the next four terms in the following arithmetic sequence? (-7), (-2), 3, 8,... A. 18, 23, 28, 33 B. 13, 18, 23, 28 C. 8

Triss [41]

Ok..ur adding 5 each time to get the next term
so the next 4 terms are : 13, 18, 23, 28

5 0

2 years ago

A circle has a circumference of 42 in.what is the area of the circle

Solnce55 [7]

Answer:

140.37 in²

Step-by-step explanation:

C = 2πr

42 = 2πr

21 = πr

r = 21/π

A = πr²

A = π × (21/π)²

≈ 140.37 in²

3 0

2 years ago

Read 2 more answers

In which quadrant is the point (5,-2) located?

nevsk [136]

Quadrant Four (IV) since the x coordinate is a positive and the y coordinate is a negative.

7 0

2 years ago