what is a polygon. explain

Answer:

-142

Step-by-step explanation:

Plug in 9 into x

-(9)^2-9(9)+20

-81-81+20

-162+20

-142

The required value of f(9) is -142.

In mathematics, a function from a set X to a set Y assigns to each element of X exactly one element of Y.

Now the given function is,

f(x) = -x^2 - 9x + 20

Now for finding f(9), putting x = 9 in f(x) we get,

f(9) = -9^2 - 9*9 + 20

Solving we obtain,

f(9) = -81 - 81 + 20

Simplifying we get,

f(9) = -162 + 20

Thus,

f(9) = -142

this is the required solution for f(9).

Thus, the required value of f(9) is -142.

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Answer:

Hello!

Welcome to Brainly :D

      My name is Euijin and the Answer is:

1. 1

2. -3

Or you can use it Backwards.

Step-by-step explanation:

Answer:

1) 39

2) 59

3) 53

4) 38

5) 9

6) 12

7) 15

8) 11

Step-by-step explanation:

if the angles together is a right angle than you just subtract the angle that is known from 90 and you get your other angle.

1) 90 - 51 = b = 39

2) 90 - 31 = b = 59

3) 90 - 37 = b = 53

4) 90 - 52 = b = 38

5) 90 - 56 = 34

34 = 3x + 7

3x + 7 - 7 = 3x

34 - 7 = 27

3x = 27

3x  / 3 = x

27 / 3 = 9

6) 90 - 48 = 42

42 = 3x + 6

3x + 6 - 6 = 3x

42 - 6 = 36

3x = 36

3x / 3 = x

36 / 3 = 12

7) 90 - 47 = 43

43 = 2x + 13

2x + 13 - 13 = 2x

43 - 13 = 30

2x = 30

2x / 2 = x

30 / 2 = 15

8) 3x +  5x + 2 = 90

8x + 2 = 90

8x + 2 - 2 = 8x

90 - 2 = 88

8x = 88

8x / 8 = x

88 / 8 = 11

Answer:

-3/8

Step-by-step explanation:

-3/8 = -0.375

-5/11 = -4545...

-4545... > -0.375

Best of Luck!

Answer: 12 cm will be the base of the triangle

Answer:

230

Step-by-step explanation:

Answer:

[tex]displacemnt \: = 4432.5m \: (left)[/tex]

Step-by-step explanation:

[tex]velocity = \frac{displacemnt}{time} \\ - 98.5m {s}^{ - 1} = \frac{x}{45.0 \: s } \\ x = - 98.5 \times 45.0 \\ displacemnt \: = 4432.5m \: (left)[/tex]

Answer:

-4432.5 m

Step-by-step explanation:

-98.5 × 45 = -4432.5 m

brainliest pls, it's for my next rank <:

Answer:

b

Step-by-step explanation:

Answer:

83

Step-by-step explanation:

9² + 1 × 2

81 + 2

83

By the way, I am Nancy.

Answer:

9 or 8.25

Step-by-step explanation:

27/3=9

35/4=8 3/4

To find the price of one pizza, we can set up a system of equations based on the given information. Let's assume that the price of one pizza is "x" dollars.

From the first scenario, we know that Diego paid $27 to have 3 pizzas delivered. Thus, we can write the equation:[tex]3x = 27[/tex] From the second scenario, we know that Diego paid $35 to have 4 pizzas delivered. Thus, the equation becomes: [tex]4x = 35[/tex] To solve this system of equations, we can use the substitution method .

From the first equation, rearranging it to solve for "x," we find: [tex]x = 27/3 x = 9[/tex]Substituting the value of "x" into the second equation, we find:[tex]4(9) = 35 36 = 35[/tex] This means there is no solution, indicating that there might be an error in the given information.

However, if we assume an average price for each pizza, we can calculate it. The average price per pizza can be found by dividing the total amount spent by the number of pizzas. Thus, for both scenarios combined, Diego spent $62 on 7 pizzas, leading to an average price of: [tex]62/7 ≈ $8.86[/tex]Therefore, the estimated price of one pizza is approximately $8.86.

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Answer:

segment point is 6 look at the a and b

Answer:

(-1/2,0)

Step-by-step explanation:

(-3+2  ,  -5+5)

(    2          2  )

(-1/2, 0/2)

(-1/2,0)

Answer:

Asia- Asya

Step-by-step explanation:

English- What is the largest continent in the world?

Filipino- Ano ang pinakamalaking kontinente sa buong daigdig?​

Answer:

35

Step-by-step explanation:

14 of these people gave Crew B a rating of high.

A relative frequency reflects how frequently a certain type of occurrence occurs in relation to the overall number of observations. It is a frequency type that employs percentages, proportions, and fractions.

Given that, A total of 70 people responded about the quality of the work of Crew B. relative frequency of crew B getting high as the rating is 0.200.

Hence,

the number of people who gave B a rating of "high" = 0.200* 70 = 14

Therefore, from the survey owner get to know that 14 out of 70 people think that crew B does work of high quality.

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Answer: 4 tenths, 3 hundredths, and 7 thousandths.

what do you mean

it's just 0.437

Answer:

15%

Step-by-step explanation:

Answer:

Im pretty sure its D

Step-by-step explanation:

Given :

Emily sells erasers for $2 per package and pencils for $5 per package. she sells 220 total packages and earns $695.

To Find :

The number of packages of erasers and pencils that were sold .

Solution :

Let, number of erasers are x and pencils are y.

So, x + y = 220    ....1

Also, 2x + 5y = 695   ....2

Solving equation 1 and 2, we get :

[tex]2(220-y)+5y = 695\\\\440 - 2y + 5y = 695\\\\3y = 255\\\\y=85[/tex]

x = 220 - 85 = 135

Therefore, the number of packages of erasers and pencils that were sold are 135 and 85 respectively.

Hence, this is the required solution.

​

Answer:

x= 20

Step-by-step explanation:

did it on edg2020 a while ago

The value of x using vertical angle is 20.

Thus, option (A) is correct.

Vertical angles are a pair of non-adjacent angles formed by two intersecting lines. When two lines intersect at a point, they create four angles around that point. The two pairs of opposite angles are called vertical angles.

Each pair of vertical angles is congruent, meaning they have equal measures.

Given:

<TRS = x + 40

<VRW = 3x

From the figure, the angles <TRS and <VRW are vertical angles.

So, <TRS = <VRW

x+ 40 = 3x

To do this, subtract x from both sides of the equation:

x + 40 -x = 3x - x

40 = 2x

Dividing both sides of the equation by 2:

40 /2 = x

x= 20

So, the solution is x= 20.

Thus, option (A) is correct.

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Answer:

70 degrees

Step-by-step explanation:

Answer:

60 degrees

Step-by-step explanation:

A complementary angles add up to 90 degrees.

If an angle measure 30 degrees less than its complementary angle it must be 60 degrees.

30 degrees less than 60 is 30.

This is the answer :)

x = 24

Step-by-step explanation:

isolate the variable

Answer:

First one- x=0

Second=All real numbers

Step-by-step explanation:

Answer:A

Step-by-step explanation:

Answer: A

Step-by-step explanation:

Answer:

232

Step-by-step explanation:

First you do 220.83 - 18.99 which is 201.84 so you know the price he spent for the miles driven.

Then you divide that number by .87 which gives you 232 for the number of miles driven.

Answer:232

Step-by-step explanation:First of all 87 cents in a decimal it is .87 on to the summery of the question.220.83-18.99=101.84/.87=and the answer is 232.

18.99 needs to be subtracted from 220.83.It will equal 101.84.You will need to divide .87 in to 101.84 to get the answer 232

3 feet = 1 yard

(3 feet)^3 = (1 yard)^3 ... cube both sides

27 cubic feet = 1 cubic yard

So her claim is false. There are 27 cubic feet in 1 yard.

Answer:

No, 13.439 is not a repeating decimal, and,

Yes, it is a rational number because, it can be represented as p/q where q ≠ 0

The p/q form of this number = 13439/100

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Thanks!!

Answer: point t is on line segment su. given su= 5x , tu= 2x, and st= 4x-3, determine the numerical length of TU.

i did not know of the measurements. sorry!!!

Step-by-step explanation: