PLZ HELP!!! It’s timed

Answer:=0,4

Step-by-step explanation:

Answer:

n=15

Step-by-step explanation:

20n=300

divide by 20 on both sides

20n/20=n

300/20=15

n=15

Answer:

a is the correct answer in e2020

Step-by-step explanation:

Based on the calculations, the row operation (-2R₁ + R₂ → R₂) is equal to:[tex]\left[\begin{array}{cccc}3&12&8&102\\0&-6&-6&-42\\0&15&5&85\end{array}\right][/tex]

First of all, we would write a matrix to represent the number of tickets sold and the total cost of the tickets for three performances as follows:

                   [tex]\left[\begin{array}{cccc}3&12&8&102\\6&10&6&102\\0&15&5&85\end{array}\right][/tex]

Next, we would perform this row operation (-2R₁ + R₂ → R₂):

[tex]\left[\begin{array}{cccc}3&12&8&102\\(-2\times 3+6)&-2\times 12+18)&-2\times 6+6)&-2\times 102+162)\\0&15&5&85\end{array}\right][/tex]

Evaluating further, we have:

[tex]\left[\begin{array}{cccc}3&12&8&102\\0&-6&-6&-42\\0&15&5&85\end{array}\right][/tex]

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Complete Question:

The drama club at a local high school sells adult, teen, and child tickets for a school play. The matrix below represents the tickets sold and the total cost of the tickets for three performances.

[tex]\left[\begin{array}{cccc}3&12&8&102\\0&-6&-6&-42\\0&15&5&85\end{array}\right][/tex]

What is the result of performing the row operation (-2R₁ + R₂ → R₂) on this matrix?

Answer:

455 miles

Step-by-step explanation:

Answer:

(4,-3)

Step-by-step explanation:

This is where the 2 lines meet

Answer:

- 1/2

Step-by-step explanation:

edit (sorry i was wrong)

Answer:

49.9

Step-by-step explanation:

Given that an object with a mass of 54kg travels at 15m/s^2, determine the kinetic energy of the object.

KE =  0.5 x mv^2

M (mass) = 54kg

V (velocity) = 15m/s^2

Then, we plug the values in.

KE =  0.5 x 54(15^2)

Now, we solve.

KE = 0.5 x 54(225)

KE = 0.5 x 12150

KE = 6075

Now, that we have solved the formula, we can see that the kinetic energy of the object is 6,075J.

Thus, the kinetic energy of the object is 6,075J.

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

(m^2-m-4)+(m+5)​

Remove parentheses:

m^2-m-4 + m+5

Group like terms:

m^2-m+m-4+5

Add similar elements:

m^2-4+5

Add/subtract the numbers:

m^2+1

Your Answer Is m^2+1

plz mark me as brainliest if this helped :)

Answer:

[tex]m^{2} -9[/tex]

Step-by-step explanation:

add the subtracted 4 and 5

Answer: I believe that answer is D.

Step-by-step explanation:

-The angle below it is also 120 degrees.

-It definitely can’t be 35 or 60 degrees because the angle is bigger than a right angle.

Right angle-is 90 degrees exactly

Hope this helps!

Answer:

yeah its most definitly D

Step-by-step explanation:

...

Answer:

c

Step-by-step explanation:

Answer:

The answer is c look at the picture below

Step-by-step explanation:

Answer:

168in

Step-by-step explanation:

We have been given that a new car, originally worth $35,795, depreciates at a rate of 17% per year. The value of the car can be represented by the equation [tex]y=35795(0.83)^x[/tex], where x represents the number of years since purchase and y represents the value (in dollars) of the car.

To find the value of car of after 5 years, we will substitute [tex]x=5[/tex] in our given equation as:

[tex]y=35795(0.83)^5[/tex]

[tex]y=35795\cdot (0.3939040643)[/tex]

[tex]y=14099.79598[/tex]

Upon rounding to nearest tenth, we will get:

[tex]y\approx 14099.8[/tex]

Therefore, the car will be worth $14,099.8 after 5 years it is first purchased.

Since $14,099.8 is less than original value of car, therefore, we know hat value of car is depreciating and $14,099.8 is correct answer.

We also know that an exponential decay function is in form [tex]y=a(1-r)^x[/tex], where,

y = Final value after t years,

a = Initial value,

r = Decay rate in decimal form,

x= Time.

[tex]17\%=\frac{17}{100}=0.17[/tex]

[tex]y=35795(1-0.17)^x[/tex]

[tex]y=35795(0.83)^x[/tex]

Answer:

D

Step-by-step explanation:

Answer:

n+ (n + 6) = 24

Step-by-step explanation:

Answer:

12 people fit in a van, 5 fit in a car

Step-by-step explanation:

v is people in a van, c is people in a car

5v+2c=70

3v+4c=56

5v+2c=70

2c=70-5v

c=35-2.5v

now use substitution to plug in c

3v+4(35-2.5v)=56

3v+140-10v=56

140-7v=56

-7v=-84

v=12

now we know v, plug it in to find c

5(12)+2c=70

60+2c=70

2c=10

c=5

12 people fit in a van, 5 fit in a car

Answer:

No, she will go $3.15 above 40.

Step-by-step explanation:

1. Since the tip is 15%, you can either multiply 37.52 by 1.15 or 0.15. In the route of multiplying by 0.15, you need to add it to 37.52. I will multiply by 1.15 to make it easier.

2. 37.52x1.15 = 43.148 or about $43.15 (rounded).

Answer:

c = Circumference=pid= 81.64   To find the radius of a circle you can just divide the diameter by 2.

pi = 3.14

d = diameter=c/3.14                  Pi is always 3.14 or 22/7.

d = 81.64/3.14

d = 26

r= radius= 26/2

radius=13 cm

Step-by-step explanation:

Answer:

Well, since we are not given any graphics or additional information, I'll resort to listing four triangle area formulas:

1) triangle area = (1/2) * base * height

2) Heron's Formula  ("s" = semiperimeter, which is the sum of all 3 sides divided by two)

triangle area = square root [s * (s - side a) * (s - side b) * (s - side c)]

3) For 2 sides and the INCLUDED Angle:

Area = side 1 * sine (angle A) * side 2

Step-by-step explanation:

Answer: 30degrees

Step-by-step explanation:

Answer:

Yes, the two events are independent because  P(NF | PB) = P(NF)

Step-by-step explanation:

                     Paperback           Hardcover      Total

Fiction            20                        10                      30    

Nonfiction     60                        30                     90

Total              80                        40                     120

P(NF | PB) = 60/80 = 3/4

P(NF) = 90/120 = 3/4

Answer:

840 cm³

Step-by-step explanation:

In the figure attached, the prism is shown.

The prism can be divided into two rectangular prisms, one at the top, with dimensions 5 x 4 (= 12 - 8) x 6 cm, and the other one at the bottom with dimensions 15 x 6 x 8 cm.

Area of the first prism: 5*4*6 = 120 cm³

Area of the second prism: 15*6*8 = 720 cm³

Then, the volume of the complete prism is 120 + 720 = 840 cm³

The required total volume of the complete prism is 840 cm³.

We have to determine, The volume of the prism 5cm,12,cm 15cm,6cm 8cm.

According to the question,

The prism can be divided into two rectangular prisms,

First part at the top, with dimensions [tex]= 5 \times 4 \times( 12 - 8) = 5\times 4 \times 6 cm,[/tex]

And the other part one at the bottom with dimensions [tex]= 15 \times 6 \times 8 cm.[/tex]

Area of the first prism: [tex]5\times4\times6 = 120 cm^{3}[/tex]

Area of the second prism: [tex]15\times6\times8 = 720 cm^{3}[/tex]

Then, The Total volume of the complete prism is 120 + 720 = 840 cm³

Hence,  The required total volume of the complete prism is 840 cm³.

For more information about Area click the link given below.

https://brainly.com/question/19305981

Answer:

DB is a chord, CG is the radius, AB is the diameter, and MN is a secant.

Answer:

see below

Step-by-step explanation:

The diameter goes from one side to the other passing through the middle

AB is the diameter

Radius goes from one side to the middle

AC or BC is the radius

The chord connects two points on the circles edge

BD AB  are chords

Secant is a line that intersects the circle at two points

MN is the secant

Answer:

Mark earns 12 dollars an hour, and Steven earns 15 dollars.

Mark earned 6*12=72 dollars, and Steven earned 15*5=75 dollars.

Step-by-step explanation:

Let's set Mark's salary as x.

Steven=x+3

Last Friday, Steven earned 5(x+3) dollars, while Mark earned 6x dollars.

We can write the sum of these salaries as:

5(x+3)+6x=147

5x+15+6x=147

11x+15=147

11x=132

x=12

Then, we can substitute x with 12.

Mark earns 12 dollars an hour, and Steven earns 15 dollars.

Mark earned 6*12=72 dollars, and Steven earned 15*5=75 dollars.

Answer: Mark earns 12 dollars an hour, and Steven earns 15 dollars.

Mark earned 6*12=72 dollars, and Steven earned 15*5=75 dollars

Step-by-step explanation:

Answer:

(+,-)

Step-by-step explanation:

On the x axis it is negative and on the y axis it is positive

hope this helps!!!

Answer:

its 6

Step-by-step explanation:

The answer is 6 because inequality means -Inequality (mathematics), a relation between two values when they are different.

Answer:

Step-by-step explanation:

-7

Answer:

80⁰

Step-by-step explanation:

x = sum of alternate angles

x = 50 + 30

x = 80⁰

Answer:

4/5

Step-by-step explanation:

took it on edg

The value of cos(M) is determined as Four-fifths (4/5).

The length of the adjacent side of the right triangle is calculated as follows;

adj² = hyp² - opp²

adj² = 25² - 15²

adj² = 400

adj = √400

adj = 20

Value of cos(M)

Cos (M) = adj/hypo

Cos (M) = 20/25

Cos (M) = 4/5

Thus, the value of cos(M) is determined as Four-fifths (4/5).

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Answer:

this is a no solution

Step-by-step explanation:

Answer:

It would cost $232.32, this answer is rounded.

Step-by-step explanation:

The formula for the volume of a square pyramid is:

[tex]V=a^2\frac{h}{3}[/tex]

So its just:

[tex]8.8^2\frac{12.5}{3} = 322.67 cm^3[/tex]

Then you just multiply the volume by the cost per cubic centimetre:

[tex]322.67cm^3*$0.12=$38.704[/tex]

After just multiply the cost of one by how many you want, which is 6:

[tex]38/704*6=232.32[/tex]

The cost to manufacture 6 paper weight is $232.32

where

b = base

h = height

Therefore,

v =  1 / 3 × 8.8² × 12.5

v = 1 / 3 × 77.44 × 12.5

v = 968 / 3

v = 322.666666667 cm³

1 cm³ = $0.12

322.67 cm³ = ?

cost of a paperweight = 322.67 × 0.12 = $38.72

Therefore,

1 paper weight = $38.72

6 paper weight = ?

cross multiply

cost of 6 paper weight = 6 × 38.72

cost of 6 paper weight = $232.32

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