MATHEMATICS COLLEGE

Dilution ProblemSamantha needs 115 liters of a solution that has a concentration of 14 g/ml for the manufacture of computer parts.
Samantha has an unlimited supply of a solution with a concentration of 21 g/ml.
Using the Formula C1×V1 = C2×V2 to answer the following questions
Round answers to the nearest 10th.

How many liters of 21 g/ml does Samantha need to equals the amount of soluble in the given solution?
(Concentration times Volume = grams of soluble, like salt)​

Answers

Answer 1
Answer:

Answer:

  76.7 liters

Step-by-step explanation:

You have ...

  C1×V1 = C2×V2

so ...

  V2 = V1×(C1/C2) = (115 L)×(14/21) = 76 2/3 L

  V2 ≈ 76.7 L

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A university administrator obtains a sample of the academic records of past and present scholarship athletes at the university. The administrator reports that no significant difference was found in the mean GPA (grade point average) for male and female scholarship athletes ( P = 0.287 ) . This means that: a. the maximum difference in GPAs between male and female scholarship athletes is 0.287.
b. the chance of obtaining a difference in GPAs between male and female scholarship athletes as large as that observed in the sample if there is no difference in mean GPAs is 0.287.
c. the GPAs for male and female scholarship athletes are identical, except for 28.7% of the athletes.
d. the chance that a pair of randomly chosen male and female scholarship athletes would have a significant difference in GPAs is 0.287.

Answers

Answer:

A university administrator obtains a sample of the academic records of past and present scholarship athletes at the university. The administrator reports that no significant difference was found in the mean GPA (grade point average) for male and female scholarship athletes ( P = 0.287 ). This means that - the GPAs for male and female scholarship athletes are identical, except for 28.7% of the athletes. (Option C)

Step-by-step explanation:

The probability of obtaining results as extreme as the observed results of a statistical hypothesis test, assuming that the null hypothesis is correct is known as p-value.

The p-value is used as an option to reject points to provide the smallest level of significance at which the null hypothesis would be rejected. A smaller p-value means that there is stronger evidence in favor of the alternative hypothesis.

Only the statement expressed by option C is in correlation with the meaning of p-value.

Misu sheet owner of the bedspread shop knows his customers will pay no more than $135 for a comforter misu wants a 20% makeup on cost roundup instead of a selling price what is misus price

Answers

i say that the anwser is 429 good luck

-3-[(6+3)+(-5-18)]-3-[(6+3)+(-5-18)]

Answers

Answer:

11

Step-by-step explanation:

The sum of two intcgers is -6. If one of them is 2, then the other is(a) 4
(b) 4
(c) 8
(d) -8​

Answers

Answer:

D) -8

Step-by-step explanation:

If you add a positive and a negative, you end up subtracting. If your sum is lower than any of the numbers you are adding together, then there is a negative. In this case, your only negative number is -8, but if there were others, you could find this equation by doing negative six minus two (because the equation was originally addition, it would still be subtraction to check your work or find the answer in this case.)

Hopefully you find this useful :)

Answer:   -8

Step-by-step explanation:    lets take the unknown number as x,

so we have, 2 + x= -6

                 by using transposition method, x= -6-2( positive becomes  

                                                                       negative when transpositioning)

      so, x= -8                      

Help ASAP
Add these expressions
(3x+15) + (4x+13)

Answers

Answer:7x+28

Step-by-step explanation:

Answer:

7x + 28

Step-by-step explanation:

Line up the columns just like with standard addition.  Keep the x numbers in the same columns and keep the integers in their columns.  It will look like this:

               3x     +     15

PLUS       4x     +     13

              ----------------------

                7x     +     28

There is an average of 3.5×10−2 kilograms of dissolved salt in each liter of seawater. The South China Sea contains approximately ​ 9.88×1018 ​ liters of seawater. How many kilograms of dissolved salt are in the South China Sea? Enter your answer, in scientific notation, in the boxes.

Answers

Answer:

3.458×10¹⁷ kg

Step-by-step explanation:

(3.5×10⁻² kg/L) × (9.88×10¹⁸ L) = (3.5×9.88) × 10⁽⁻²⁺¹⁸⁾ kg

... = 34.58×10¹⁶ kg

... = 3.458×10¹⁷ kg

_____

Comment on significant digits

It would be appropriate to round the answer to 2 significant digits, matching the number of significant digits in the least-precise factor. Then the answer would be 3.5×10¹⁷ kg.

_____

Comment on scientific notation problems

Your scientific calculator can show results in scientific notation.
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