All categories

2 years ago

The length of a rectangle is (x - 9) feet. Its width is x feet. Write an expression you could use to find the perimeter

Mathematics

1 answer:

steposvetlana [31]2 years ago

6 0

Answer:

The expression for the perimeter of the rectangle is: $P = 4x - 18$

Step-by-step explanation:

Perimeter of a rectangle:

A rectangle has length l and width w. It's perimeter is given by:

$P = 2(l + w)$

In this question:

$l = x - 9, w = x$

$P = 2(x - 9 + x) = 2(2x - 9) = 4x - 18$

The expression for the perimeter of the rectangle is: $P = 4x - 18$

You might be interested in

HELP! LOOK AT THE IMAGES BELOW

sineoko [7]

Answer:

(g+f)(x)=(2^x+x-3)^(1/2)

Step-by-step explanation:

Given

f(x)= 2^(x/2)

And

g(x)= √(x-3)

We have to find (g+f)(x)

In order to find (g+f)(x), both the functions are added and simplified.

So,

(g+f)(x)= √(x-3)+2^(x/2)

The power x/2 can be written as a product of x*(1/2)

(g+f)(x)= √(x-3)+(2)^(1/2*x)

We also know that square root dissolves into power ½

(g+f)(x)=(x-3)^(1/2)+(2)^(1/2*x)

We can see that power ½ is common in both functions so taking it out

(g+f)(x)=(x-3+2^x)^(1/2)

Arranging the terms

(g+f)(x)=(2^x+x-3)^(1/2) ..

5 0

3 years ago

ΔMNP is an isosceles triangle with MN ≈NP. If ∠ M = 3x + 1 and ∠ N = x - 11. What is the measure of ∠P?

s2008m [1.1K]

Start with an equation summing all the angles in this triangle:

180 = <M + <N + <P

we are given <M and <N but not <P. But, since MN=NP, the angle <P is the same as the angle <M (isosceles, make a drawing to see). So

180 = 2<M + <N

180 = 2(3x+1) + x-11

180 = 7x - 9

x = 27

<P = 3*27+1 = 82 degrees

4 0

3 years ago

How do I factorise 42x-18

ikadub [295]

6 (7x - 3)

You have to factor 6 out of 42x - 18.

Hope this Helps!!

7 0

2 years ago

Read 2 more answers

Please help me A.S.A.P.

Vikentia [17]

Answer:

700 Dollars

Step-by-step explanation:

The expression for solving this is I = prt

So lets start with P, that is our principal or amount of money we start with, and we want to multiply it by our rate, or r , which is 3.5, so we would do 5000 x 0.035 to get 175, then we multiply that by our time or t, which is 4 years, so 175 x 4 = 700 dollars :D

5 0

2 years ago

Read 2 more answers

Simon has a scale model of the Concorde airplane. The actual length of the Concorde is approximately 200 feet. If the ratio of t

Verizon [17]

The answer is: "40 cm " .
_________________________________________________________
<u>Note</u>:
_________________________________________________________

$\frac{200 ft }{ (x) cm} = \frac{5}{1}$ ;

Solve for "x" (in "cm" ) ;

→ 5x = 200 * 1 ;

→ 5x = 200 ;

Divide each side of the equation by "5" ;
to isolate "x" on one side of the equation; & to solve for "x" ;

→ 5x / 5 = 200 / 5 ;

to get:

→ x = 40 .
___________________________________________________________
The answer is: " 40 cm " .
___________________________________________________________

6 0

3 years ago

Read 2 more answers