The area of a square playground (in square feet) can be represented by x2 - 30x + 225. How many feet is the perimeter of the playground if x = 25?

Answers

Answer 1

Answer:

40

Step-by-step explanation:

Substitute 25 for x

[tex] {25}^{2} - 30(25) + 225 = 100[/tex]

100 is the area of the square so that means

10 is the side length of each side of the square.

Multiply 4 by 10 to get the perimeter.

[tex]4 \times 10 = 40[/tex]


Related Questions

Please answer this question.

See picture attached.

Just question C please.

Answers

Diagram B because the points are all over the place.

Answer:

Diagram B

Step-by-step explanation:

Diagram A makes sense to have a line of best fit because there is a common amount of data for where the next points probably will be. The points are close to the line of best fit, and there are pretty much an even amount of points on each side of the line. So, Diagram A’s line of best fit makes sense.

Diagram C makes sense to have a line of best fit because about the line, all the points are right next to it, and the line of best fit gives a nice representation of the data. So, Diagram C’s line of best fit makes sense.

For Diagram B, all of the points all scattered across the graph and none of them are close to the line of best fit, and a line a best fit is usually made to make an estimat of where the data will be, but for example, the point (20,90) is nowhere near the line of best fit. So, Diagram B’s line of best fit should not have been drawn.

Sam needs to figure out how much purple paint to buy.
Calculate for her the total area, in square feet, of the four walls.
She will not paint the door or windows.

Answers

Answer: 322 square feet

Answer: The Answer is 322

Step-by-step explanation:

I have done this test before :)

answer to 7x^2 - 3x + 6 = 0

Answers

Answer: 2.7

Step-by-step explanation: Hope this helps!

Answer:

(3 - [tex]\sqrt{159}[/tex]) / 14 ≈ -0.7

(3 + [tex]\sqrt{159}[/tex]) / 14 ≈ 1.1

Step-by-step explanation:

this quadratic has no real roots because of the negative square root

-3.41 is located between which of the letters on
the number line?
K
L
M
N
e
R
S
+
0 P
+
0 1
-5
-4
-3
-2
- 1
2
3
4
5
a
Kand L
Ob
Mand N
Panda
Od
Rands

Answers

Answer:

k and l....................

what's 1.187939392 to the nearest tenth?

Answers

Answer:

1.2

Step-by-step explanation:

For this, everything after 8 doesn't matter.

Because 8 is bigger than 5, we will round the number to the left up.

It is because 8 is the hundreth.

=1.2

Use elimination to solve this

Answers

The solution is (-7/2 , 3)

Explanation:
#1 : I eliminated the x value which will leave me with the y value.

#2: now that you have the y value,, to look for the x value, pick one equation from the equations given. (I used 2x + 4y = 5)

#3: now put your y value into the equation in order to get the x value. (2x + 4(3) = 5)

#4: now just solve for x.

Factor the given expression using the GCF monomial please!

I actually need to understand this so please show your work as well, thank you!

Answers

Answer:

9a^4b^10 ( 4 - 9a^12b^20)

Step-by-step explanation:

The greatest common factor of the two terms is 9a^4b^10

You can now remove the greatest common factor outside the brackets.

Inside the brackets, you place the value obtained by dividing 36a^4b^10- 81a^16b^20 by 9a^4b^10

That is = 4 - 9a^12b^20

Please note that the laws of indices i used for the above division is: n^a divided by n^b = n^(a-b)

Now, the factorised answer for your question =  9a^4b^10 ( 4 - 9a^12b^20)

Hope thos helps  

A fisherman is standing on the left bank of a stream that is 115 ft wide. The angle of depression from the edge where he stands to the bottom of the stream on the opposite edge is 52˚. How deep is the river at this point? (round to nearest foot).

Answers

Answer:

Step-by-step explanation:

A fisherman is standing on the left bank of a stream that is 115 ft wide. The angle of depression from the edge where he stands to the bottom of the stream on the opposite edge is 52˚. How deep is the river at this point? (round to nearest foot).

Select the situation below that can be represented by the expression 1/6 divided by 3

Answers

1/6 means "one-sixths"

÷ 3 means "divided by three"

Full sentence

One-sixths divided by three

Find the similar sentence in the options.

It's letter (D) One-sixths of a yard cut into 3 equal lengths.

Cutting into equal lengths is the same as saying "Divide"

5x +3=8 i need the value of x​

Answers

Answer: x=1

Step-by-step explanation:

5x+3-3=8-3

5x=5

5x/5x=5/5x

x=1

2) What is the measure of

Answers

Answer:

I thought it is 44 since ACB is 88 and it is a central angle with respect to the arc AB while ADB is inscribed angle then it is 1/2 of arc AB then it is 1/2 of 88 which is 44

U will be marked as brainlest if u solve this question


give a fraction equals to 36/90 and having the sum of the numerator and the denominator equal to 28​

Answers

Answer:

8/20

Explanation:

36/90 = 0.4

8/20 = 0.4
and
8 + 20 = 28

Fin.ish the lyr.ics: What can I say exce.pt your​

Answers

Answer:

go pico yeah yeah ahhahshdhxhxxj

Which numbers are solutions to the equation 30=x2
? Select all that apply.

x=15

x is equal to 15
x=30−−√
x is equal to square root of 30
x=900
x is equal to 900
x=−15
x is equal to negative 15
x=−30−−√
x is equal to negative square root of 30
x=−900

Answers

Answer:

x = +√30

Step-by-step explanation:

Please write 30 = x squared as 30 = x^2.

If x^2 = 30, there are two solutions:  x = +√30 and x = -√30.

Several possible answers are given.    x=30−−√ is closest to the correct one, but must be written as x = √30.  Please ask someone how to find the "√" operator in Brainly.  Or, just write "sqrt(      )" instead.

is x the slope , and what is y

Answers

Answer:

wheres the picture?

Step-by-step explanation:

Answer:

y intercept  

Step-by-step explanation:

the point where the graph crosses the y -axis

{67, 68, 68, 71, 73, 73, 73, 74, 74, 74, 74, 75, 75, 77, 78, 79, 79, 80, 80}
What is the median of the data?
68
71
74
75

Answers

the answer would be 74 i believe sorry if i am wrong

Answer:

74

Step-by-step explanation:

hajahabajsj abshahhahss

PLEASE HELP Write a one chunk paragraph explaining the steps to solve for the equation 3(2x+1)=4x+5

Answers

Answer:

x = 1

Step-by-step explanation:

First perform the indicated multiplication:  

3(2x+1)=4x+5 becomes 6x + 3 = 4x + 5.

Consolidate like terms:   2x = 2

Solve for x:  x = 1

Answer:

Step-by-step explanation:

To solve the equation, first you would multiply 3 times 2x and 3 times 1.  Then, you would write 6x plus 3 on the right side of the equation.  Then, you would subtract 3 from both sides of the equation.  You then will have 6x=4x+2.  Lastly, you would get an answer of x=1

Solve the linear equation.
[tex] \frac{3}{4}x - 7 = 3( \frac{1}{6}x + 1)[/tex]

Answers

X=40

Let me know if it’s wrong I’ll re work the question out .

Last year, Mr. Ledger used 18 donuts during the lessons. This year, he used 22 donuts. Place points on the graph to show how many donuts are left at the end of last year's lesson and this year's lesson.

Answers

Answer:

(22,2) and (18,6)

Step-by-step explanation:

Heyyyy so the equation is y=24-x

So let's do 24-x to get y

24-18=6

Same thing

24-22=2

I also did this on Khan so yeah its right :D

Question 1 (1 point)
Which inequality is a true statement?

Select each correct answer.

Question 1 options:

−3≤−1

−3>−1

−3=−1

−3<−1

−3≥−1-

Question 2 (1 point)
Which statement is true?

Question 2 options:

7.11<−7.1

7.11≤−7.1

7.11>−7.1

7.11=−7.1
Question 3 (1 point)
Which value of x is a solution of the inequality?

x−(−3)≥7


Question 3 options:

x=−5

x=8

x=2

x=3.5
Question 4 (1 point)
Which value of x is a solution of the inequality?

x−6>−2


Question 4 options:

x=24

x=11

x=20

x=18
Question 5 (1 point)
Which value of x is a solution of the inequality?

−2x<−18


Question 5 options:

x=32

x=8

x=−27

x=2

0 of 5 questions saved

Answers

False.                            7.11 < 7.1       x=8     x=11    x=8

True.

False.

False.

True.

A.100
B.180
C.112
D.68
E.94
F.56
G.90

Answers

94

112-18=94
vertical angles equal each other
the answer is E. 94

hope this helps!

2) W
All of the following situations can be
represented by the integer 10, except
which one?
A a balloon rises 10 ft into the air
B the stock market gains 10 points
C The town lies 10 It below sea level. Please help!
D Jon received a gift of $10

Answers

B. Hope it helps
#CoL

For which of the following is x = -5 a solution? Select all that apply.

Answers

Answer:

Options 2, 3, 4, 5 are the solutions.

Step-by-step explanation:

Option 1).

x + 10 = -5

x = -10 - 5

x = -15

Therefore, x = -5 is not the solution.

Option 2).

-x² + 50 = 25

-x² = 25 - 50

-x² = -25

x² = 25

x = ±5

Therefore, x = -5 is a solution

Option (3)

|2x| = 10

2x = ± 10

x = ± 5

Therefore, x = -5 is a solution.

Option (4)

x < 0

Since, -5 < 0

Therefore, x = -5 is a solution.

Option (5)

2x < 10

x < 5

Since, -5 < 5

Therefore, x = -5 is a solution.

Options 2, 3, 4, 5 are the solutions.

Given that ac=22 and bc=7, find ab

Answers

Answer:

I'll look into that answer

What is the answer please!

Answers

Answer:

rectangle

Step-by-step explanation:

Answer:

b!

Step-by-step explanation:

a. does not have a base or hight

c. is BxHxL

d. not sure

Which expressions are equivalent to the expression 18b+24? Select all that apply. *

A.6(3b+4)
B.6(3b+8)
C.2(96-12)
D.3(6b+8)
E.3(6b+4)
F.2(9b+12)

Answers

Answer:

A, D, F

Step-by-step explanation:

6(3b+4)=18b+24

6(3b+8)=18b+48

2(96-12)=192-24

3(6b+8)=18b+24

3(6b+4)=18b+12

2(9b+12)=18b+24

can you help me with this ,please?​

Answers

Answer : B. 11.4 Units

In a department store, a $190 phone is marked, "Save 15%."

a)What is the amount of the discount?

b) What is the sale price of the phone?

Pls help
work out or just help me

Answers

15% of 190 = 28.5

190-28.5=161.5

A: 28.5

B: 161.5

4sqrt(98) + sqrt(150) - 2sqrt(32)

Answers

Answer:

40.53171996

Step-by-step explanation:

Used a calculator


Find the scale factor that was used

Answers

scale factor is 2
30/15 = 2
20/10 = 2
The scale factor is 1.5.

15/10=1.5

30/20=1.5

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