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scoundrel [369]
3 years ago
6

What is the answer to ( 4n-1) + (3n-7)

Mathematics
2 answers:
Shkiper50 [21]3 years ago
8 0
7n - 8 <span> hope this for proof <span>http://www.tiger-algebra.com/drill/(4n-1)_(3n-7)/ </span> </span>
or to <span>answer other question like this </span>
<span />
ollegr [7]3 years ago
3 0
You can only simplify the expression, because it doesn't equal anything. If you simplify it it would be:

4n-1 + 3n-7
4n+3n + -1-7
7n-8
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Can pls someone help and show me how to solve i’m<br> really struggling
Nadya [2.5K]

Answer:

∠RQS = 156

Step-by-step explanation:

m∠TQS = 24

∠TQS and ∠RQS are linear pair. Linear pair are two adjacent angles and their sum is 180

∠TQS + ∠RQS = 180

  24 + ∠RQS = 180

         ∠RQS = 180 - 24

        ∠RQS = 156

5 0
3 years ago
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matrenka [14]

Answer:

A) The legs are 9 & 12 inches.

B) The hypotenuse is 15 inches.

<em>Hope that helps! :) <3</em>

Step-by-step explanation:

8 0
3 years ago
What is 1 inch to 6 feet
docker41 [41]

Answer:

6 feet 1 inches in cm =

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3 years ago
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A theater has a seating capacity of 750 and charges $3 for children, s5 for students, and $7 for adults. At a certain screening
-BARSIC- [3]

Answer:

Between 150 and 450

Step-by-step explanation:

We are going to find the number by resolving  a system of linear equations.

First we write the system equations :

C+S+A=750

Where C : children, S : students and A : adults

The equation represents the ''full attendance''

The second equation :

3C+5S+7A=3450

This equation represents the totaled receipts.

The system :

C+S+A=750\\3C+5S+7A=3450

has the following associated matrix :

\left[\begin{array}{cccc}1&1&1&750\\3&5&7&3450\end{array}\right]

By performing elementary matrix operations we find that the matrix is equivalent to

\left[\begin{array}{cccc}1&0&-1&150\\0&1&2&600\\\end{array}\right]

The new system :

C-A=150\\S+2A=600

Working with the equations :

C = 150 + A\\S = 600-2A

Our solution vector is :

\left[\begin{array}{c}C&S&A\end{array}\right] =\left[\begin{array}{c}150+A&600-2A&A\end{array}\right]

For example :

If 0 adults attended ⇒ A = 0

C = 150 + 0 \\C = 150\\S = 600 - 2A\\S = 600

This verify the totaled receipts equation :

150($3)+600($5) = $ 3450

A ≥ 0 ⇒ If A = 0 ⇒ C = 150

C = 150 is the minimum children attendance

From the equation :

S = 600 -2A

S ≥0

600 - 2A ≥ 0

600 ≥ 2A

300≥ A

A is restricted to the interval [ 0, 300]

When A = 0 ⇒ C = 150

When A = 300 ⇒C = 150 + A = 150 + 300 = 450

Children ∈ [ 150,450]

With C being an integer number (including 0)

Also S and A are integer numbers (including 0)

7 0
3 years ago
Number 9 please. I need help
Sloan [31]

(1/12)X = 6800

6800/ (1/12) = X

X = 81600 (hours)

6800 (6.8 * 10^3) divided by 1/12 (12^-1) equals 81600. It will take 81600 hours for the pool to completely empty at a rate of 0.833333333 or 12^-1 gallons per second.

8 0
3 years ago
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