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3 years ago

PLA HELP ME ASAP FOR 12 and 13 (SHOW WORK!!!!!) + LOTS OF POINts!

Mathematics

1 answer:

jekas [21]3 years ago

4 0

For 12. Neil's mistake was that he didn't combine like terms of both the constant and numbers with both the variable of k. 9 and -8 are both constants so you combine it and get an answer of 1 since 9+ -8 is 1. 12k and k both have the variable of k so you combine it and get 13k.

The simplified version should be: 13k+1=12k-1

For 13. The third expression would be equivalent to the expression above listed as 12r+6s. The third expression is 4(3r+s)+2s and if you do PEMDAS you will get the same answer. Parentheses, 4 times 3r is 12r and 4 times s is 4s and after that you get 12r+4s+2s. As said before, if they have like terms you combine it so you get 12r+6s and it will equal the same as the one shown above.

Hope this helped you and would love brainiest! <span />

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What percent is 52.52 million of 142 million

coldgirl [10]

Answer:

37%

Step-by-step explanation:

Given parameters:

Total number = 142 million

Comparing number = 52.52 million

Unknown:

What percent is the number =?

Solution

The percentage;

= $\frac{comparing number }{total number } x 100$

= $\frac{52520000}{142000000}$ x 100

= 37%

5 0

3 years ago

Answer this question I will Mark brilliant and gets 70 PTS <br>do number one or two or do both

yanalaym [24]

Answers And Explanations:

Question 1.

Pulling out like terms :

1.1 Pull out like factors :

12y - 10 = 2 • (6y - 5)

Equation at the end of step 1 :

Divide both sides by 2

Divide both sides by 6

y-(5/6) > 0

Add 5/6 to both sides

y > 5/6.

Therefore, y = 5/6

__________________________________

Question 2.

To make fractions improper with whole numbers, you must <u>multiply the Denominator by the whole number, then add the Numerator to the Product.</u>

<u></u>

First we multiply 32 by 5.

32 x 5 = 160.

Then we add the Numerator which is 1.

160 + 1 = 161, then we put it over the Denominator, your final answer is 161/5.

Therefore, 161/5 is your final answer.

Have any questions? Feel free to comment below!

Thank you and Best of Luck to you!

<u></u>

7 0

2 years ago

Write a rule for the nth term of the geometric sequence for which a1=−6 and a5=−486

patriot [66]

The geometric rule for the nth term of the geometric sequence for which a1 =−6 and a5=−486 is -6 × 3^(n - 1)

<h3>The nth term of a geometric sequence</h3>

First term, a1 = -6

Fifth term, a5 = -486

a5 = ar^(n - 1)

-486 = -6 × r^(5-1)

-486 = -6r⁴

r⁴ = -486 / 6

r⁴ = 81

r = 4√81

r = 3

Geometric rule:

nth term = ar^(n-1)

nth term = -6 × 3^(n - 1)

Learn more about geometric sequence:

brainly.com/question/24643676

#SPJ1

7 0

1 year ago

Each month, Miss Patrick spends $60 on transportation to work, and earns $24.50 per hour.Each month, Mr. Shah spends $150 on lab

Semmy [17]

Answer:

3 hours for miss patrick 5 hours for mr shah

Step-by-step explanation:

5 0

2 years ago

Read 2 more answers

How do uou do this problem

Ronch [10]

The first step to solving an equation like this is to find the slope of a line that will be perpendicular to the line given. The slope of a line that's perpendicular to another line is the negative reciprocal. The negative reciprocal of -1/5 is 5. So, so far our equation is y = 5x + b. Now, to find what b is equal to, we should substitute the values of x and y from the point (1,2) since we know that our line goes through the point. Our equation becomes:

2 = 5 + b
b= -3

That means that the equation of our new line is y = 5x - 3

4 0

3 years ago