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Bad White [126]
3 years ago
5

Tonya wraps 2 presents in 3 minutes. At this rate, how many presents with Tonya wrap in 15 minutes?

Mathematics
2 answers:
ludmilkaskok [199]3 years ago
8 0

Answer:

10 presents

Step-by-step explanation:

3 x 5 = 15, and 2 x 5 =10

Alisiya [41]3 years ago
4 0

Answer:

10! because 3 to get 15 is 5 and 2×5 is 10

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Start time: 3:30 PM<br> End time: 7:00 PM<br> Elapsed time:
JulijaS [17]

Answer:

3hr 30min

Step-by-step explanation:

3hr 30min

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3 years ago
If you ever swam in a pool and your eyes began to sting and turn red, you felt the effects of an incorrect pH level. pH measures
Alinara [238K]

Hello,

Please, see the attached files.

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3 years ago
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m_a_m_a [10]

Answer:

Theres a website that can help

Step-by-step explanation:

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3 years ago
Match each power of i with its multiplicative inverse.
erastovalidia [21]

By definition we have to:
 In mathematics, the inverse multiplicative, reciprocal or inverse of a non-zero number x, is the number, denoted as 1/x or x -1, which multiplied by x gives 1.
 We have then:

 1) i
 The multiplicative inverse is:
 \frac{1}{i}
 Rewriting we have:
 \frac{1}{i} \frac{i}{i}
 \frac{i}{i^2}
 \frac{i}{-1}
 -i
 Answer 3) -i

 2) i^2
 The multiplicative inverse is:
 \frac{1}{i^2}
 Rewriting we have:
 \frac{1}{-1}
 -1
 Answer 4) -1

 3) i^3
 The multiplicative inverse is:
 \frac{1}{i^3}
 Rewriting we have:
 \frac{1}{i*i^2}
 \frac{1}{i^2}*\frac{1}{i}
 \frac{1}{-1}*\frac{1}{i}*\frac{i}{i}
 (-1)*\frac{i}{i^2}
 (-1)* \frac{i}{-1}
 i
 Answer 1) i

 4) i^4
 The multiplicative inverse is:
 \frac{1}{i^4}
 Rewriting we have:
 \frac{1}{i^2i^2}
 \frac{1}{(-1)(-1)}
 \frac{1}{1}
 1
 Answer 2) 1
3 0
3 years ago
Read 2 more answers
A class of 31 students average 82 on a recent exam. Two students were absent and took the exam the next day. The two students av
dedylja [7]

Find the total points for each group:

31 students averaged 82, so the total points were 31 x 82 = 2542

2 students averaged 88, so the total points were 2 x 88 = 176

Now add the total points and divide by 33 students (31 +2):

2542 + 176 = 2718

2718 / 33 = 82.36

The average is 82.36 ( Round as needed).

4 0
3 years ago
Read 2 more answers
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