All categories

3 years ago

Khan academy question. Please help!

Mathematics

1 answer:

Zepler [3.9K]3 years ago

7 0

It’s B
because i said so

You might be interested in

Which value, when placed in the box, would result in a system of equations with infinitely many solutions?

PSYCHO15rus [73]

For a system of equations to have infinitely many solutions it must describe identical lines.
If you multiply the first equation by 2, then move the x term to the left side, you would get 2y-4x=-10
Final Answer:
-10
Hope I helped :)

4 0

3 years ago

Read 2 more answers

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

3 years ago

It's ya girl

Agata [3.3K]

Answer:

oki! I hope you don't get banned! But if you come back, that's great! :)

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

What is 3.08 x 12.4 ?

lawyer [7]

Answer:

=38.192x

Step-by-step explanation:

I hope this helps you

7 0

3 years ago

Find x.<br> to<br> 150 <br> X =<br> Alternate interior angles

eimsori [14]

Answer: 75 degrees

Step-by-step explanation: supplementary angles= 180 degrees, 180 - 115 = 75

3 0

2 years ago