1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
White raven [17]
2 years ago
15

Hey can someone please help

Mathematics
1 answer:
Licemer1 [7]2 years ago
3 0

first is false and second is also false all ate false

You might be interested in
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
If you know the diameter of a circle,
arsen [322]

Step-by-step explanation:

a. Area of a circle = πr², where r means radius.

Step 1: converted diameter to radius.

diameter = 2 radius

In other way of writing, radius = \frac{1}{2} diameter.

Step 2: substitute radius into the formula.

Area of a circle = π(\frac{1}{2}d)²

Step 3: substitute π into the formula.

some question is given the value of π), if not substitute 3.14 for π.

Area of a circle = 3.14(\frac{1}{2}d)²

Step 4: substitute d into the formula, then we can solve its area.

b. a. Circumference of a circle = 2πr, where r means radius.

Step 1: converted diameter to radius.

diameter = 2 radius

In other way of writing, radius = \frac{1}{2} diameter.

Step 2: substitute radius into the formula.

C = 2π(\frac{1}{2}d)

Step 3: substitute π into the formula.

some question is given the value of π), if not substitute 3.14 for π.

C = 2(3.14)(\frac{1}{2}d)

Step 4: substitute d into the formula, then we can solve its circumference.

6 0
2 years ago
Solve px-18=4 for x ​
sashaice [31]

Answer:

x=22/p

Step-by-step explanation:

1. Add 18 to 4

2. px=22

3. Divide by p to isolate x

4. 22/p=x

4 0
2 years ago
Read 2 more answers
Which of the following is a polynomial with roots negative square root of 5, square root of 5, and 3?
kykrilka [37]
The polynomial with those roots would be: 

<span>y = (x + √5)(x - √5)(x - 3) </span>
<span>▬▬▬▬▬▬▬▬▬▬▬ multiply this out to get </span>
<span>y = (x² - 5)(x - 3) </span>

<span>y = x³ - 3x² - 5x +15</span>
6 0
3 years ago
Graph the linear inequality. 3x-y&lt;6
Sphinxa [80]

Answer:

Step-by-step explanation:

3 x - y < 6

dividing whole equation by 6 equation comes out to be

\frac{3x}{6}-\frac{y}{6}

\frac{x}{2}+\frac{y}{-6}

from the above equation we can clearly see that the x and y co-ordinate

x co-ordinate will be (2,0) where y coordinate will be(0,-6)

and the plot is given in the attachment given below.

where as the shaded portion gives the desired  region.

6 0
2 years ago
Other questions:
  • Presley is marking the lines for a soccer field. She needs to form a right triangle near the goal. She measures the lengths of h
    9·2 answers
  • Can someone help. Please!
    14·1 answer
  • Do children prefer purple juice or yellow juice? Two different supplements, which have no effect on taste, are used on identical
    6·2 answers
  • 3. Given ABCD ≅ FGHJ and mC = 9x - 7, mH = 5x + 13, find the value of x and the measures of angle C and angle H. Show all work
    12·1 answer
  • Find the sum of vectors u = &lt;-2, 6&gt; and v = &lt;4, -9&gt;, and then find the magnitude of u + v.
    11·1 answer
  • P​ = a​ + b​ + c for a
    14·1 answer
  • Which of these systems of equations would be best solved using the subtraction​ method?
    8·1 answer
  • What is 12x^2 + 16x^3
    14·1 answer
  • PLZ HELP I BEG U!!!!!! ILL MARK U BRAINLIEST
    6·1 answer
  • Please Help Asap Please And Thank You!
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!