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3 years ago

Find the perimeter of a triangle with sides 12 inches, 9 inches, and 15 inches.

2 answers:

7 0

If its perimeter, it should be quite easy to find. Just add 12+9+15. Which equals 36. So the perimeter is 36 inches. -Hope it helps!

kogti [31]3 years ago

7 0

Hi there! P=L+W+H. It really doesn't matter what the length, width, and height is when your dealing with perimeter. In this case, the length is 12 inches, the width is 9 inches and the height is 15 inches. 12 inches+9inches+15inches=36 inches. Therefore, the answer is 36 inches.

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3/x+1 -1/2 = 1/3x+3 please help solve

mash [69]

$\frac{3}{x+1}^{(6}-\frac{1}{2}^{(3x+3}=\frac{1}{3x+3}^{(2} \\\\ 18-3x-3=2 \\\\ -3x+15=2\\\\ -3x=2-15 \\\\-3x=-13 \\\\ \boxed{x=\frac{13}{3}}$

4 0

2 years ago

One side of a triangle is 2 times the second side. The third side is 15 feet longer than the second side. The perimeter of a

ch4aika [34]

Answer:

16, 8, 23

Step-by-step explanation:

2x+x+x+15=47

4x+15=47

4x=32

x=8

2x=16

x+15=23

7 0

2 years ago

the equation y= - 5.131x2+ 31.821x - 3.333 approximates the number of people standing in line to catch a commuter train x hours

ehidna [41]

We are given function: y= $- 5.131x^2+ 31.821x - 3.333$

Where, x is the number of hours after 5a.m.

We need to approximates the number of people standing in line to catch a commuter train at 7 a.m.

From 5 a.m. to 7 a.m. total number of hours = 7-5 = 2 hours.

So, we need to plug x=2 in the given function.

Plugging x=2 in $y=- 5.131x^2+ 31.821x - 3.333$ , we get

$y=- 5.131(2)^2+ 31.821(2) - 3.333$

Let us simplify it now.

2^2= 4.

Therefore,

$y=- 5.131(4)+ 31.821(2) - 3.333$

= -20.524 + 63.642 - 3.333.

= 39.785 or 40 approximately.

Therefore, the number of people in line at 7 a.m. is approximately 40 people.

Option D.40 is correct option.

3 0

3 years ago

2(15 + q ) = __ + 2q

Rzqust [24]

Answer:

Step-by-step explanation:

use distribution property

7 0

3 years ago

Read 2 more answers

Solve the following factorize and the en- equation of quadrate equation X² + 5x + 7 x = 0

nlexa [21]

Answer:

{-12,0}

Step-by-step explanation:

first to solve this can collect like terms and add

X² +12x=0

and solve it by factorization method

X² +12x=0

x(x+12)=0

it means x multiplied by x = X² then x multiplied by 12 = 12x

so this means x or (x+12) equals to zero

x=0 and (x+12)=0

x+12=0

x=-12

so the solution set is {-12,0}

but can also be done by formula method

8 0

2 years ago