All categories

2 years ago

The perimeter of the triangle is 40 units.Which of the following equations could be used to find the value of x?

Mathematics

1 answer:

Artyom0805 [142]2 years ago

5 0

Answer:

13x + 112 = 320.

Step-by-step explanation:

The perimeter is the sum of the 3 sides:

1/2 x + 3/8 x + 11 + 3/4 x + 3 = 40

1/2 x + 3/8 x + 3/4 x + 3 + 11 = 40

1/2 x + 3/8 x + 3/4 x + 14 = 40

Multiply through by 8 to remove the fractions:

4x + 3x + 6x + 14 = 40

13x + 112 = 320.

You might be interested in

How do I solve 8x+5y=-20 ?

Vlad [161]

Answer: y=-8/5x-4

Step-by-step explanation:

8x+5y=-20

-8x -8x

5y=-8x-20

/5 /5

y=-8/5x-4

4 0

3 years ago

Combine Like Terms: x^2 + y^2 + 3y^2 + 4x + 2x + 2 + 2

Serga [27]

Answer:

x^2 + 4y^2 + 6x + 4

Step-by-step explanation:

Arranging the terms;

x ^ 2 + y^2 + 3y^2 + 4x + 2x + 2 + 2

x^2 + 4y^2 + 4x + 2x + 2 + 2

x^2 + 4y^2 + 6x + 2 + 2

x^2 + 4y^2 + 6x + 4

8 0

2 years ago

Hey someone who knows this want to give me the answer thanks

rewona [7]

The answer is C. (x+6)(x+8)

7 0

3 years ago

Read 2 more answers

What is the angle that is half of its own complement?

Cerrena [4.2K]

If you have an angle and want to know its complement, you subtract it from 90 degrees. What angle, when subtracted from 90 degrees, gives the same value?

90 - x = x

The supplement of x is the angle that you add to x to make 180 degrees. In other words, 180 - x = the supplement of x.

4 0

3 years ago

Jack and Jill start driving from the same location. Jack drives 30 miles south while Jill drives west. If Jack and Jill are 78 m

arsen [322]

Answer:

72 mles

Step-by-step explanation:

For better understanding, I'll make use of an attachment.

From the attachment,

O represents the start point

$OB = 30$ --- Jack

$AB = 78$ -- Distance between them

Required

Find OA; Jack's distance

To do this, we make use of Pythagoras theorem

$AB^2 = OA^2 + OB^2$

This gives:

$78^2 = OA^2 + 30^2$

$6084 = OA^2 + 900$

Subtract 900 from both sides

$OA^2= 6084 - 900$

$OA^2= 5184$

Take square roots

$OA = \sqrt{5184}$

$OA = 72$

<em>Hence, Jill drove 72 miles</em>

5 0

3 years ago