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3 years ago

The perimeter of the triangular park is 16x-4. What is the missing length? (Simply the answer)

Mathematics

2 answers:

blagie [28]3 years ago

7 0

Answer:

9x - 5

Step-by-step explanation:

Let the missing length is a

We have:

a + (5x-3) + (2x+4) = 16x - 4

=> a = (16x - 4) - (5x-3) - (2x+4)

a = 16x - 4 - 5x + 3 - 2x - 4

a = (16x - 5x - 2x) - ( 4 - 3 + 4)

a = 9x - 5

aksik [14]3 years ago

4 0

Answer:

9x-5

Step-by-step explanation:

5x+2x=7x -3+4-1

7x+1

16x-7x=9x

4-3-5=-4

2x+5x+9x=16x

16x-4

If I got it right branliest would be nice!!

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Read 2 more answers

A rectangular pool 18 meters by 12 meters is surrounded by a walkway of width x

vesna_86 [32]

Answer:

x=3 meters

Step-by-step explanation:

step 1

Find the area of the rectangular pool

$A=LW$

we have

$L=18\ m\\W=12\ m$

substitute

$A=18(12)=216\ m^2$

step 2

Find the area of rectangular pool including the area of the walkway

Let

x ----> the width of the walkway

we have

$L=(18+2x)\ m\\W=(12+2x)\ m$

substitute

$A=(18+2x)(12+2x)$

step 3

Find the area of the walkway

To find out the area of the walkway subtract the area of the pool from the area of rectangular pool including the area of the walkway

$A=(18+2x)(12+2x)-216$

step 4

Find the value of x if the area of the walkway equal the area of the pool

$(18+2x)(12+2x)-216=216$

Solve for x

$(18+2x)(12+2x)=432\\216+36x+24x+4x^{2}=432\\4x^{2} +60x-216=0$

Solve the quadratic equation by graphing

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see the attached figure

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3 years ago

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sertanlavr [38]

Answer:

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Step-by-step explanation:

If you're not familiar with the squares of small integers, your calculator can help you figure this.

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