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Elena L [17]
3 years ago
14

Eva incorrectly classifies the quotient -(-81/-9) as positive.

Mathematics
1 answer:
NISA [10]3 years ago
6 0
The answer is negative because, ( -81/-9) =(+9). -(+9) = -9. Maybe for got the - sign before the equation
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What is the midpoint between (7 − 3i) and ( 3 + 2i).
Rufina [12.5K]

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Step-by-step explanation:

Complex numbers on the complex plane are in essense the same, when it comes to midpoints. Applying the midpoint formula, we get the midpoint as  ( 3+2i + 7-3i ) /2 , or (10-i)/2, or 5- i/2

5 0
4 years ago
What is negative 38 plus 11?
zalisa [80]

Answer:

- 27

Step-by-step explanation:

Hope this helps

4 0
3 years ago
A teacher must grade 32 reports. She can grade 4 reports in 90 minutes. How many hours will it take to grade 32 reports?
Nataly_w [17]

Answer:

The teacher will take 720 minutes or 12 hours to grade 32 reports.

Step-by-step explanation:

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Cross multiply method

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4 0
3 years ago
Read 2 more answers
Jeffrey is a kickboxing instructor who will be teaching classes at a local gym. To get certified
tatyana61 [14]

If Jeffrey takes 50 classes in his first month as an instructor, he will earn back the amount he spent on certification.

Step-by-step explanation:

Amount spent on certification = $200

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Let, x be the number of classes.

J(x) = 50+3x  

He needs to earn $200 dollars in first month, therefore,

50+3x=200

3x=200-50\\3x=150

Dividing both sides by 3

\frac{3x}{3}=\frac{150}{3}\\x=50

If Jeffrey takes 50 classes in his first month as an instructor, he will earn back the amount he spent on certification.

Keywords: function, linear equation

Learn more about functions at:

  • brainly.com/question/6465937
  • brainly.com/question/6431715

#LearnwithBrainly

7 0
3 years ago
Can someone help with that?<br><br>if x+y=2, calculate: <br>P=4x (x-3)+4y(y-3)+8xy​
olganol [36]

Answer:

Step-by-step explanation:

P = 4x(x - 3) + 4y(y - 3) + 8xy

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 = 4(x² + 2xy + y²) - 12(x + y)

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x+y =2 ⇒ P = 4.2² - 12.2 = 16 - 24 = -8

6 0
3 years ago
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