MATHEMATICS HIGH SCHOOL

Convert 15 years to seconds

Answers

Answer 1
Answer: 1 hour = 3600 s
1 day = 24 hours = 24 x 3600 = 86400 seconds

1 day ...... 86400 seconds
365 days ..... t seconds

t= 365 x 86400 /1 = 31536000

So, we have 31536000 seconds in 365 days. => 31536000 seconds = 1 year 

--------------------------------------------------------------

1 year ........ 31536000 seconds 
15 years .......... z seconds 

z = 15 x 31536000 / 1 
z= 473040000 

So, 15 years = 473040000 seconds !!!!!! 
Done.

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Tran is solving the quadratic equation 2x2 – 4x – 3 = 0 by completing the square. His first four steps are shown in the table.

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The following steps of solving for the roots of 2x² - 4x -3 = 0 were retrieved from another source Step 1 2x² - 4x = 3 Step 2 2(x² - 2x) = 3 Step 3 2(x² - 2x + 1) = 3 + 1 Step 4 2(x - 1)² = 4 From this, we can see that on Step 3, Tran made a mistake of adding 1 to 3. As we can see, 2(x² - 2x + 1) = 2x² - 4x + 2. That means, instead of adding 1, it should have been 2. Therefore, the step that Tran first made an error is Step 3.

Margarita is hired by an accounting firm at a salary of $60,000 per year. Three years later her annual salary has increased to $70,500. Assume her salary increase linearly. Find an equation that relates her annual salary S and the number of years t that she has worked for the firm.

Answers


the salary was increased each by 10,500 dollars a year

I promise I will mark you the branliest What was the experience of Jewish people under Persian rule?


Jewish people were forced out of their homeland.

Jewish people became afraid to worship in public spaces.

Jewish people remained and were free to practice their faith.

Jewish people persuaded the Persian ruler to convert to Judaism.

Answers

Answer:

Jewish people became afraid to worship in public spaces

Step-by-step explanation:

cause i got it on edge 2020

The remainder when x^3 - 11x + 10 is divided by (x+3) isA 52
B 16
C 4
D -24

I was doing a past paper and came across this,I know one (long) way of doing this and was just wondering if anyone could show me a shorter way!!!

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If you divide a polynomial P(x) by a binomial x-c, then the remainder is equal to P(c).

c=-3\nR(x)=P(-3)\nR(x)=(-3)^3-11\cdot(-3)+10\nR(x)=-27+33+10\nR(x)=16

What is the mode of the data set?
23 95 100 23 100 100

Answers

Go to the second pic for your answer. I got problem 4 wrong but it shows the correct answer.

The mode would be 100

HELPPP PLEASE!!Three research departments have 10, 7 ,6 and members, respectively. If each department is to select a delegate and an alternate to represent the department at a conference, in how many ways can this be done?

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im not for sure if i did this right but my calculator says that its 420.
hope i helped.
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