All categories

4 years ago

Write and simplify an expression for the perimeter of each figure

Mathematics

2 answers:

Nostrana [21]4 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]4 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 possibilities will form a triangle? (1 point)

kotykmax [81]

Answer:

Side = 12 cm, side = 5 cm, side = 8 cm

Step-by-step explanation:

a+c>b

a+b>c

c+b>a

To make all these statements true, the only set of number which works is 12, 5 and 8

4 0

3 years ago

Read 2 more answers

What are reports usually used for?

Vinil7 [7]

Homework, studying, or even law documents

5 0

4 years ago

Read 2 more answers

Log base2 log base 25

UkoKoshka [18]

I think it’s 5. Since logarithms are used to find the original value of a power. Therefore you reverse it and do square root of 25 which is +5 or -5

4 0

3 years ago

Inverse notation f^-1 used In a pure mathematics problem is not always used when finding inverses of applied problems. Rather, t

solong [7]

Answer:

a) 75.4 kg

b) $h(W)=\frac{W+83}{2.2}$

Step-by-step explanation:

a) The ideal weight of a 6-foot (72 inches) male is given by simply applying h= 72 in to the expression:

$W(72) = 49+2.2(72-60)\\W(72) =75.4\ kg$

b) Expressing height as a function of weight:

$W(h)= 49+2.2(h-60)\\2.2h-132+49=W\\h(W)=\frac{W+83}{2.2}$

Verifying with W(h(W)):

$W(h(W))= 49+2.2(\frac{W+83}{2.2} -60)\\W(h(W))= 49-132+W+83\\W(h(W))=W$

Verifying with h(W(h):

$h(W(h))=\frac{(49+2.2(h-60))+83}{2.2}\\h(W(h))=\frac{(49+2.2h-132+83)}{2.2}\\h(W(h))=h$

8 0

3 years ago

Sum of two number is 120. If the larger number is four times the smaller number, wbat are the two numbers

tankabanditka [31]

x+y=120_______1

x=4*y_________2

x=4y

substitute 4y for x in equation 1

`4y+y=120

5y=120

eliminate the coefficient of y

y=120/5

y=24

now,input 24 for y in equation 2

`x=4y

x=4*24

x=96

thus, the numbers are

96 and 24

3 0

3 years ago

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

Write and simplify an expression for the perimeter of each figure