All categories

3 years ago

Write and simplify an expression for the perimeter of each figure

Mathematics

2 answers:

Nostrana [21]3 years ago

4 0

Answer:

20a - 2b - 1

Step-by-step explanation:

The perimeter is the sum of the 3 sides of the triangle, that is

perimeter = 9a - 4 + 7a + 3 + 4a - 2b ← collect like terms

= (9a + 7a + 4a) - 2b + (- 4 + 3)

= 20a - 2b - 1

kolbaska11 [484]3 years ago

3 0

The picture is a bit blurry but the perimeter of a shape is the lengths added.

(4a - 2b) + (7a + 3) + (9a - 4) = perimeter, I added the sides together

Combine like terms to get:

4a + 7a + 9a = 20a

-2b is left along becuase there are no other like terms

3 - 4 = -1

The perimeter is 20a - 2b - 1

You might be interested in

Which of the following describes the “p/2” in the expression above?

julia-pushkina [17]

Option B. Quotient is the right answer

Step-by-step explanation:

Given expression is:

p/2 +4(7+p)

Let us look at the options one by one

A. factor

p/2 is not a factor as the factor is always multiplied with another factor

B. quotient

This is the right answer as p is being divided by 2. The quotient of both will be used for further calculations

Hence,

Option B. Quotient is the right answer

Keywords: MCQs, Expressions

Learn more about polynomial expressions at:

#LearnwithBrainly

5 0

2 years ago

Complete the square and graph: 9y²−x − 18y +10=0

Nitella [24]

Answer:

See below ~

Step-by-step explanation:

Completing the square :

9y² - x - 18y + 10 = 0
9y² - 18y + 9 - 9 - x + 10 = 0
(3y - 3)² - x + 1 = 0

Graph :

4 0

1 year ago

Read 2 more answers

If a bottle rotates through 250 degrees in 50 min,how many degress will it rotate in 5 min

sp2606 [1]

There is more than one way to solve this.
250° : 50min.
You can divide each side by ten for 5 minutes.
50/10 = 5 minutes
250/10 = 25°

3 0

3 years ago

Please help me idk this

kupik [55]

Answer:

A. Twice the radius, d = 2r

Step-by-step explanation:

The diameter is a line that splits a circle in half, while the radius is only half of that.

4 0

2 years ago

Find the rectangular coordinates of the point with the polar coordinates (3, 3 divided by 2 pi ). (1 point)

kifflom [539]

Answer:

The correct choice is (0,-3)

Step-by-step explanation:

To convert from polar coordinates to rectangular coordinates, we use the parametric equations:

$x=r\cos \theta$ and $y=r\sin \theta$

The point given to us in polar coordinates is $(3,\frac{3}{2}\pi)$ .

where $r=3,\theta=\frac{3\pi}{2}$

$x=3\cos (\frac{3\pi}{2})$ and $y=3\sin( \frac{3\pi}{2})$

$x=3(0)$ and $y=3(-1)$

$x=0$ and $y=-3$

The correct choice is (0,-3)

5 0

2 years ago

Write and simplify an expression for the perimeter of each figure​

Write and simplify an expression for the perimeter of each figure