Evaluate 4xy+7y-9x+21-3x^2 when x=2 and y=-1 pour answer​

Answer:

Follows are the python code to this question:

import math as m #import package  

n=int(input('Enter the number of sides:'))#defining n variable for input number of side

s= float(input('Enter the side: '))#defining s variable for input side value

area = (s*s *n)/(4 * (m.tan(m.pi/n)))#defining formula for calcaulting area

print (area)#print area

Output:

please find the attached file.

Step-by-step explanation:

In the above code, firstly, we import the math package as m, and after that, two-variable "n and s" is defined, which uses for input integer and float value from the user end.

Answer:

1) m=2/9; y-intercept= 17/3

2) m=7 ; y-intercept= 22

3) m= -2/11 ; y-intercept= 100/11

4) m= 13/19 ; y-intercept= -53/13

Step by Step Explanation:

Use the slope formula to find the slope m.

Answer:  U

Step-by-step explanation:

Looking at the graphs, U is skewed right and SHSAT is more of a normal distribution. Generally, this means the standard deviation would be greater for the data set that is skewed.

Let's find the standard deviation for each data set to confirm our theory.

Step 1) Find the mean number of hours

Step 2) Subtract each data value from the mean

Step 3) Find the mean of Step 2

U

hours x frequency: 1(3) + 2(5) + 3(4) + 4(3) + 5(3) + 6(2) + 9(1) = 72

Step 1: mean = (hours x frequency)/frequency = 72/21 = 3.4

Step 2: 2.4(3) + 1.4(5) + 0.4(4) + 0.6(3) + 1.6(3) + 2.6(2) + 5.6(1) = 33.2

Step 3: standard deviation = (sum from step 2)/ frequency = 33.2/21 = 1.58

SHSAT

hours x frequency: 1(1) + 2(3) + 3(4) + 4(5) + 5(3) + 6(3) + 7(2) = 86

Step 1: mean = (hours x frequency)/frequency = 86/21 = 4.1

Step 2: 3.1(1) + 2.1(3) + 1.1(4) + 0.1(5) +0.95(3) + 1.9(3) + 2.9(2) = 28.5

Step 3: standard deviation = (sum from step 2)/ frequency = 28.5/21 = 1.36

The calculations confirm that U has the greater standard deviation

Answer:2 x 2 x 2 x 11 = 88. It can also be written in exponential form as 23 x 111.

Step-by-step explanation:

Answer:

i think so

Step-by-step explanation:

17‒8n=‒2(4n‒7)‒3

17‒8n=‒8n+14‒3(add ‒17 on both sides)

‒8n=‒8n+14‒3‒17

‒8n=‒8n‒6

‒8n+8n=‒6

0=‒6

so the equation doesn't have solution

Answer:

The answer is D. Natural

Step-by-step explanation:

A subset, mathematically, means a category within another set. This can be shown from the picture below.

As you can see, the subset of whole numbers is, in fact, natural numbers.

Answer:

please mark brainliest!

Step-by-step explanation:

[tex]\frac{2}{3}x + 6 = 9[/tex]

2/3 of x is (2/3x)

6 added to that makes it (2/3 +6).

Saying this is 9 means it is equal to 9.

 2/3x +6 = 9

Answer:

2/3x+6=9

Step-by-step explanation:

Answer:

0

Step-by-step explanation:

−6−(−6)

=−6−(−6)

=−6+6

=0

Answer:

-12 is the answer

Step-by-step explanation:

Answer:

B. Z, K, R

Step-by-step explanation:

Z, K, R are in a line so i think it's them im actually not sure but im pretty sure it is

Answer:

?

Step-by-step explanation:

they are all multiplied by 6. I.e: 102/17 is 6

Step-by-step explanation:

5/8 hr = 5/9 mile

1 hr = 5/9 ÷ 5/8

= 8/9 mile

Speed = distance / time

= 5/9 mile / 5/8 hr

= 8/9 miles per hr?

Answer:

It depends on how the question is structured.

Answer:

1/6

Step-by-step explanation:

Answer:

- 25

Step-by-step explanation:

Step 1:

3/5m = - 15      Equation

Step 2:

m = - 15 ÷ 3/5     Divide

Step 3:

m = - 15/1 × 5/3       Multiply

Answer:

m = - 25

Hope This Helps :)

Answer:

m=-25

Step-by-step explanation:

To solve, make the variable "m" by itself. To do that, multiply the fraction "5/3" (or divide 3/5) to both sides.

3/5(5/3)m=-15(5/3)<--- 3/5 and 5/3 are reciprocals and cancel out. -15 times 5/3 equals -25.

m=-25

Answer:

4

Step-by-step explanation:

2+2 is

Answer:

a

start at the (0,-4) and go up 3 and over one.  answer "A" fits this criteria

Answer:

About 90 seats per section.

hope this helps!

Your Answer will be:

The ship from the shore is 250 Km away by most direct path.

The Pythagoras theorem states that the square of a triangle's hypotenuse is equal to the sum of its other two sides' squares.

Given:

Base= 240

Perpendicular= 70

so, distance between ship from shore by the most direct path

= √70² + 240²

=√ 4900+ 57600

= √62500

= 250

Hence, The ship from the shore is 250 Km away by most direct path.

Learn more about Pythagoras theorem here:

https://brainly.com/question/343682

#SPJ2

6 (x+5)

I hope this helps :))

Answer:

your answer is c

Step-by-step explanation:

what grade is this

Answer:

the first one is 713/100

the second one is a reapeating decimal

Step-by-step explanation:

Answer: Mr. Ratchett died approximately at 2AM.

Step-by-step explanation: Newton's Law of Cooling shows the cooling rate between a body and the environment, by stating that the rate is proportional to the difference in temperatures between them.

Mathematically, it is represented as:

[tex]\frac{dQ}{dt}=\alpha.A.(T_{s}-T)[/tex]

This differential equation solved, gives the solution:

[tex]T(t)=T_{s}+(T_{0}-T_{s})e^{-kt}[/tex]

where

[tex]T_{s}[/tex] is temperature of the environment

[tex]T_{0}[/tex] is the initial temperature of the body

k is a parameter dependent of heat transfer coefficient, heat capacity and area of the body

t is time required to change the temperature

For the murder on the Orient Express, first determine parameter k.

In 1 hour, Mr. Ratchett's body decrease 1°:

[tex]27=22+(28-22)e^{-1k}[/tex]

[tex]5=6e^{-k}[/tex]

[tex]e^{-k}=\frac{5}{6}[/tex]

[tex]ln(e^{-k})=ln(0.834)[/tex]

k = 0.1823

Using the parameter, find estimate time:

[tex]28=22+(37-22)e^{-0.1823t}[/tex]

[tex]6=15e^{-0.1823t}[/tex]

[tex]ln(e^{-0.1823t})=ln(0.4)[/tex]

0.1823t = 0.9163

[tex]t=\frac{0.9163}{0.1823}[/tex]

t ≈ 5 hours

The body was found at 7AM. So, it took approximately 5 hours to cool down to 28° at that time. Therefore, Mr. Ratchett died at 2AM.

Answer:

this is a straight line aka 180

Step-by-step explanation:

it is over 180 and it becomes flat

Answer

straight angle

Step-by-step explanation:

Answer: it’s correct tyy

Step-by-step explanation:

Answer:

C

Step-by-step explanation:

Answer:

a. 60° it is opposite the other 60° angle

b. 120° it is supplementary with the 60° angle

c. 120° it is supplementary with the 60° angle

Answer:

6110

Step-by-step explanation:

Answer:

30

Step-by-step explanation:

1.5 x 20 is 30

Answer:

0

Step-by-step explanation:

slope= (y2-y1)/(x2-x1)

= [-2-(-2)]/[9-3]

=[-2+2]/6

=0/6

=0

Hope it helps:)

Answer:

y = -4/3x +4

Step-by-step explanation:

6y + 8x = 24

Subtract 8x from each side

6y + 8x-8x = -8x+24

6y = -8x+24

Divide each side by 6

6y/6 = -8x/6 +24/6

y = -4/3x +4