I need help one this

Please help me ASAP!Please this is due soon and i don't have all day.

Helga [31]

Answer:

Section 1: 5.59%

Section 2: -2.16%

Section 3: -10.82%

Section 4: -6.54%

Section 5: -2.16%

Section 6: 7.86%

Explanation:

The formula to calculate the percent change in mass is given as:

$PercentChange = \frac{ChangeInMass}{StartingMass}*100=\frac{NewMass - OldMass}{OldMass}*100$

1- Section 1:

Old mass = 7.83 g and New mass = 8.268 g

$PercentChange = \frac{8.268-7.83}{7.83}*100 =$ 5.59%

2- Section 2:

Old mass = 7.4 g and New mass = 7.24 g

$PercentChange = \frac{7.24-7.4}{7.4}*100 =$ -2.16%

3- Section 3:

Old mass = 7.3 g and New mass = 6.51 g

$PercentChange = \frac{6.51-7.3}{7.3}*100 =$ -10.82%

4- Section 4:

Old mass = 7.49 g and New mass = 7.0 g

$PercentChange = \frac{7.0-7.49}{7.49}*100 =$ -6.54%

5- Section 5:

Old mass = 7.4 g and New mass = 7.24 g

$PercentChange = \frac{7.24-7.4}{7.7.4}*100 =$ -2.16%

6- Section 6:

Old mass = 7.89 g and New mass = 8.51 g

$PercentChange = \frac{8.51-7.89}{7.89}*100 =$ 7.86%

Hope this helps :)

6 0

3 years ago

Can someone please answer this question please answer it correctly and please show work please help me I need it

love history [14]

Answer:

The answer would be -10.

Step-by-step explanation:

It's -10 because -8-(-10) = 2

That is equal to -8 + 10 = 2 because two negative together make a positive number.

7 0

3 years ago

Read 2 more answers

Ron and Howard work at Amazon. Ron works x hours per day each week (7days). Howard works one more hour each day, than Ron. Which

KIM [24]

Answer:

Howard works 7x+7 hours in a week

Step-by-step explanation:

Equations

Ron and Howard work at Amazon.

Ron works x hours each week for 7 days. This means he works 7x hours a week.

Howard works one more hour per day than Ron, thus he works x+1 hours per day. This means he works 7(x+1)=7x+7 hours a week.

Howard works 7x+7 hours in a week

8 0

3 years ago

Which statement justifies that 3x2 − 2x − 4 multiplied by 2x2 + x − 3 obeys the closure property of multiplication? The result 6

N76 [4]

Answer:

The result $6x^4-x^3-19x^2+2x+12$ .

is a polynomial.

Step-by-step explanation:

The first polynomial is $3x^2-2x-4$ .

The second polynomial is $2x^2+x-3$

The closure property of multiplication states that if we multiply two polynomials the result must be a polynomial.

The product of these two polynomials is :

$(3x^2-2x-4)(2x^2+x-3)=6x^4-x^3-19x^2+2x+12$ .

We can see that the result is still a polynomial.

4 0

3 years ago

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Minni is arranging 3 different music CDs in a row on a shelf. Create a sample space for the arrangement of a jazz CD (J), a pop

weeeeeb [17]

The sample space for the 3 different music CDs is as follows:
{JPR, JRP, PJR, PRJ, RJP, RPJ}

8 0

4 years ago

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