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Aleksandr [31]
2 years ago
10

Plz help will mark brainlest if right

Mathematics
1 answer:
vovangra [49]2 years ago
4 0
The first arrow diagram, A, represents this relation.
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A rectangular public park has an area of 3,600 square feet. It is surrounded on three sides by a chain link fence. If the entire
Dafna11 [192]

Answer:

If length of the field is 30 ft, then width is 120 ft.

If the  length of the field is 60 ft, then width is 60 ft.

Step-by-step explanation:

Let us assume the length of the rectangular park = L ft

Let us assume the breadth of the rectangular park = B  ft

Now, AREA of the given park =  L x B

⇒ L x B  = 3,600 sq ft   ... (1)

Also, the perimeter of three sides  = 180 ft

⇒ 2 L +  B  = 180  ..... (2)

Now, from (1) and (2), we get:

L x B  = 3,600

2 L +  B  = 180   ⇒ B  = 180 - 2 L

Substitute this in(1) , we get:

L x B  = 3,600   ⇒ L x (180 - 2 L)  = 3600

\implies  180 L - 2L^2 = 3600\\\implies L^2 -90L + 1800 = 0\\\implies (L-30)(L-60)= 0

⇒ L = 30 or L  = 60

So, if L  = 30  ft , then B = 180 - 2L  =  180 - 60 = 120 ft

So, if L  = 60  ft , then B = 180 - 2L  =  180 - 120 = 60 ft

So, if length of the field is 30 ft, then width is 120 ft.

And if the  length of the field is 60 ft, then width is 60 ft.

4 0
3 years ago
Help me with my math please, it’s 6th grade
sashaice [31]
The one that has -7 and -13 on the first line.

Itd be the 2nd answer from the top.
8 0
3 years ago
Help? please tysvm!!!
trapecia [35]

Answer:

C

Step-by-step explanation:

It's the mean, I hope this helps! :)

6 0
3 years ago
For the right Triangle below, Find the exact values of the side lengths c and a.
vladimir2022 [97]

c=3\sqrt{3}\\a=4\sqrt{2}

Step-by-step explanation:

The trigonometric ratios will be used used for finding the values of given variable

For c

We have to use a ratio that has perpendicular and base in it. so we will use tan x

tan\ 60 = \frac{P}{B}\\tan\ 60=\frac{c}{3}\\\sqrt{3}=\frac{c}{3}\\3*\sqrt{3}=c\\c=3\sqrt{3}

similarly for a

sin\ 45 = \frac{b}{h}\\\frac{\sqrt{2}}{2}=\frac{a}{8}\\\frac{\sqrt{2}}{2}*8=a\\a=4\sqrt{2}

Hence,

c=3\sqrt{3}\\a=4\sqrt{2}

Keywords: Triangles, Trigonometric Ratios

Learn more about triangle at:

  • brainly.com/question/10879401
  • brainly.com/question/10940255

#LearnwithBrainly

4 0
3 years ago
Cos (90 - x) = -0.2. What is sin(x)?
Aloiza [94]

Answer:

-0.2

Step-by-step explanation:

Sine and cosine are co-functions.

That means, cos(90-x)=sin(x) or sin(90-x)=cos(x).

So here since cos(90-x)=-0.2, then sin(x)=-0.2.

4 0
2 years ago
Read 2 more answers
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