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Marat540 [252]
2 years ago
13

Problems 7and 8 50 POINTS

Mathematics
2 answers:
frez [133]2 years ago
4 0

Answer:

To find the area of a rectangle, you do Length times width. 11 times 8 equals 88, so the width would have to be 8. To find the perimeter, you add up all of the sides. If the width is 8, and the perimeter is 46, 8+8=16 and 48-16 = 30 then the length is 15.

Vinil7 [7]2 years ago
3 0
Try to add "ft" or "in" next to your answer, making "8 ft" rather than 8. Otherwise, your answer is correct.
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Barbie is thinking of a number 20 less than one-third of the number is 72 find barbie's number
ExtremeBDS [4]
Let x = Barbie's number
1/3 x -20 = 72
1/3 x = 92
x = 92*3=276
4 0
3 years ago
Would lengths of 15 inches, 10 inches and 6 inches form a triangle
Firdavs [7]

Answer:

Yes

Step-by-step explanation:

8 0
3 years ago
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
A company has 29900 employees in one country. If this represent 18.3% of the company’s employees, how many employees does it hav
mario62 [17]

Answer:

About 163 388 employees

Step-by-step explanation:

Let total number of employees in the company be represented by x. Thus:

18.3\% \: of \: x = 29900

18.3\% \:x \:  = 29900

\frac{18.3}{100}x = 29900

0.183x = 29900

Divide through by 0.183

\frac{0.183x}{0.183}  =  \frac{29900}{0.183}

x = 163387.9

x = 163388 \: to \: nearest \: whole \: number

The total number of employees in one country is about 163388

5 0
3 years ago
Help please <br><br> I need help got to turn this in tomorrow
zhannawk [14.2K]

Answer:

2.25 is the correct answer for -36/-16

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
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