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padilas [110]
3 years ago
6

Plz help plz explain i dont even know how to begin this

Mathematics
1 answer:
OverLord2011 [107]3 years ago
7 0
Do you need an expression. if so you identify pencils by the value
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100 points + brainiest
Scrat [10]

Answer:

  • 35 grams of 11.43% solution

Step-by-step explanation:

The end solution has same volume as initial volumes of mixture.

  • 10 + 25 = 35 g

The concentration of solution is calculated as below

  • 10*0.15 + 25*0.1 = 4 g
  • 4 / 35*100% = 11.43% (rounded)

6 0
2 years ago
Someone please help asap!!!!! difference of squares
AnnZ [28]

Answer:

The answer to your question is: the last option

Step-by-step explanation:

                                                      m² - 6m + 6m -36

Simplify like terms                                m² - 36    

Factor (difference of squares)        (m + 6) (m - 6)

4 0
3 years ago
Lisa wants to buy material for her dress. If she buys 7metres, she is 1 dollar short. If she buys 5metres, 5 dollars is left ove
Ede4ka [16]

Answer:

She has 15 dollar.

Explanation

If every meter costs 2 dollars, then 5 meter would cost 10 dollars and 7 meter would cost 14 dollar. Now we take a number when subtracted from 10, we get 5 dollar and when the same number subtracted from 14 we get 1 dollar left. Now if we take 15 dollar, you'll see that when you subtract 10 from it you get 5 dollar and when you subtract 14 from it you get 1 dollar. Therefore 15 satisfies the given condition in the question.

$15 - $10 = $5

$15 - $14 = $1

4 0
3 years ago
Carla wants to know how many students in her school enjoy watching reality TV shows. She asks all 22 students in her science cla
weeeeeb [17]
Statistic significance requires that your sample be representative of the population, but I'm struggling with this because if the class is an elective then the answer would be: <span>No, it is not a valid inference because she asked all 22 students in her science class instead of taking a sample of the students in her school.
BUT if the class is required, as most science classes are, then it WOULD be a random sample of the school. So the last option would be correct. 

My guess though is that the teacher is looking for answer B.
</span>
3 0
4 years ago
Carlos landlord added a markup of 6.5% to their October rent . Carlos rent would have been 750 what is the cost of his rent afte
Lapatulllka [165]

Answer:

c

Step-by-step explanation:

dont know if i am right

5 0
3 years ago
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