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Luba_88 [7]
3 years ago
13

PLZ ANSWER PIC INCLUDED​

Mathematics
1 answer:
Alchen [17]3 years ago
4 0

Answer:

28 feet

Step-by-step explanation:

We know that the perimeter of a square is 2l + 2w, where l is the length and w is the width.

We also know that the perimeter of a triangle is all of its sides added up.

Since the perimeters will be equal to each other, we can make both of these statements an equation that are equal to each other.

Basically:

(3x - 3) + (3x - 3) + (x - 3) + (x - 3) = (2x - 1) + (2x - 1) + (2x)

We can combine like terms to get a <em>less scary</em><em>  </em>equation.

8x - 12 = 6x - 2

Our goal is to now isolate x so we can find it's value.

Add 2 to both sides:

8x - 10 = 6x

Subtract 6x from both sides:

2x - 10 = 0

Add 10 to both sides:

2x = 10

Divide both sides by 2:

x = 5

Now we know the value of x, however, our work isn't done. They want to know the perimeter, so we need to substitute x in as 5.

Let's do it on the triangle.

6x-2 (remember, this is our simplified version of the triangle)

6(5) - 2\\\\30 - 2\\\\28

Hope this helped!

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<img src="https://tex.z-dn.net/?f=%5Csqrt%7B%20x%5E%7B2%7D-10x%2B25%7D%2B25%2B12%5Csqrt%7Bx%7D%20%3D15%5Csqrt%7Bx%7D" id="TexFor
vodomira [7]

Step-by-step explanation:

\sqrt{ x^{2}-10x+25}+25+12\sqrt{x} =15\sqrt{x} \\  \\  \therefore \: \sqrt{ x^{2}-10x+ {5}^{2} }+25 =15\sqrt{x} - 12\sqrt{x}\\  \\  \therefore \: \sqrt{( x - 5)^{2}}+25 =3\sqrt{x}  \\  \\ \therefore \:  x - 5+ 25 = 3 \sqrt{x}  \\  \\ \therefore \: x + 20 = 3 \sqrt{x}  \\  \\ squaring \: both \: sides \\ (x + 20)^{2}  = ( {3 \sqrt{x} })^{2}  \\ \therefore \:  {x}^{2}  + 40x + 400 = 9x \\ \therefore \:  {x}^{2}  + 40x + 400  - 9x = 0 \\  \therefore \:  {x}^{2}  + 31x + 400  = 0 \\

8 0
3 years ago
(2.5×10-8)(9×10-10)​
IgorC [24]

Answer:

1360

Step-by-step explanation:

First, you do all the operations inside the parenthesis, and then you multiply the two. Also, remember the order of operations. Multiplication always comes before addition and subtraction.

(2.5x10-8)(9x10-10)

(25 - 8)(90 - 10)

(17)(80) = 17x80 = 1360

4 0
3 years ago
A=1/2h(b+c) solve for h
pogonyaev
<span>1) Multiply both sides of the equation by 2:

2(A)=2[1/2h(b+c)
2A=2/2h(b+c)
2A=1h(b+c)
2A=h(b+c)

2) Divide both sides of the equation by (b+c):
(2A)/(b+c)=[h(b+c)]/(b+c)
2A/(b+c)=h
h=2A/(b+c)

 Answer: </span>h=2 \frac{A}{(b+c)}
5 0
3 years ago
Need help 2x = 2(x-3)
GenaCL600 [577]

Answer:

0=-6 There can't be an answer for x

Step-by-step explanation:

1: distribute: 2x=2x-6

2: isolate x by subtracting 2x from both sides: 0=-6

3 0
3 years ago
Read 2 more answers
You want to buy some groceries there is a coupon that offers a %15 discount on your total bill your bill comes to $76 how much
Anna71 [15]

Answer:

$64.6

Step-by-step explanation:

15% off $76 = -$11.4 = $64.6

3 0
2 years ago
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