MATHEMATICS MIDDLE SCHOOL

Find the sum and express it in simplest form (5n^3+7n+2)+(-n^3-6n+5)

Answers

Answer 1

Answer:

Answer:

4n^3 +n +7

Step-by-step explanation:

(5n^3+7n+2)+(-n^3-6n+5)

I like to line them up vertically

5n^3+7n+2

-n^3 -6n+5

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

4n^3 +n +7

Answer 2

Answer:

Answer:

$\boxed{\bold{4n^3+n+7}}$

Step By Step Explanation:

Remove Parenthesis: (a) = a

$\bold{5n^3+7n+2-n^3-6n+5}$

Group Like Terms

$\bold{5n^3-n^3+7n-6n+2+5}$

Combine Similar Elements: $\bold{7n-6n=n}$

$\bold{5n^3-n^3+n+2+5}$

Combine Similar Elements: $\bold{5n^3-n^3=4n^3}$

$\bold{4n^3+n+2+5}$

Add: $\bold{2+5=7}$

$\bold{4n^3+n+7}$

➤ $\boxed{\bold{Mordancy}}$

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What is the least number of acute angles that a triangle can have?

Answers

The least amount of acute angles would have to be 2 because if you had 1, the others would have to be acute, otherwise the triangle would not form properly.

The least number of acute angles that a triangle can have is 2.

B(n)=4-6(n-1)
Find the 4th term

Answers

Answer:

- 14

Step-by-step explanation:

Substitute n = 4 into the n th term formula, that is

B(4) = 4 - 6(4 - 1) = 4 - 6(3) = 4 - 18 = - 14

i need this ASAP Steve’s score in a card game is 5 points away from zero. Denia’s score is the opposite of Steve’s and is a positive value. What is Denia’s score?

Answers

Answer:

Step-by-step explanation:

Answer:

Step-by-step explanation:

cause 5 away from 0 could be -5 or 5 but because hers is a positive value it is 5

Concrete is a mixture of cement, sand, and gravel. The Masons will purchase a cement, sand, and gravel mixture in a ratio of 1:2:3. How many pounds of each material are needed for 60 lb of concrete mix?

Answers

10 pounds of cement, 20 pounds of sand, 30 pounds of gravel. 10:20:30 = 1:2:3
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HELP ME PLZZZZZ!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answers

Answer:

The answer is 90 winners.

Step-by-step explanation:

Well, we are given three days. The first day has a rate of 13% winning. The second day has a rate of 13% as well. And the third day has a rate of 11%. You can find this simply by dividing the amount of winners by amount of participants. Now, we must find the mean, or average, of these statistics. We will get 12% as the average rate of winners. How did we get this? By simply adding all three (13+13+11) then dividing by three (37/3), which gives us 12% if we round to a whole number. Now, we can take this number and get 12% of 750. How do we do this? Well, 12% is equal to 0.12. So we will multiply 0.12 by 750. This will give us 90. And there you have your answer.

Alternatively, you could add up the total amount of contestants from the three days. You should end up with 1000. Then add up the total amount of winners from the three days. You should get 120. Divide both of these by 4. The winners will now be 40, and the total contestants will be 250. Now multiply both by 3. The amount of contestants will be 750, and the amount of winners will be 90. This way is a bit easier, but does not always work. Do what is best for you!

Hope this helped!

6 of 20% is what number

Answers

Actually, 20 percent of 6 is 1.2, but 6 is 20 percent of 30, which is the answer you're looking for.

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