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vesna_86 [32]
3 years ago
12

The expression 2l 2w is used to find the perimeter of a rectangle with length l and width w. what is the perimeter of a rectangl

e with length 14 cm and width 4 cm?9 cm18 cm28 cm36 cm

Mathematics
2 answers:
svetlana [45]3 years ago
6 0

Answer:

The perimeter is 36 cm.

Step-by-step explanation:

The expression 2l +2w is used to find the perimeter of a rectangle with length l and width w.

Now, when the length is 14 cm and width is 4 cm, the perimeter will be :

2(14)+2(4)

= 28+8

= 36 cm

Hence, the perimeter is 36 cm.

AnnyKZ [126]3 years ago
3 0
Just plug the values into the equation and solve

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Mademuasel [1]
We have to find the values of F.
In this case. F is unlikely to be a polynomial.
But the problem is, we can’t calculate the values of F directly.
There is no real value of x for which x = x−1 x because F isn’t defined at 0 or 1. so,
substituting x = 2.
F(2) + F(1/2) = 3.

Substitute, x = 1/2
F(1/2) + F(−1) = −1/2.
We still are not getting the required value,
therefore,
Substitute x = −1

As, F(2) +F(−1) = 0.
now we have three equations in three unknowns, which we can solve.
It turns out that:
F(2) = 3/4
F(3) = 17/12
F(4) = 47/24
and
F(5) = 99/40

Setting
g(x) = 1 − 1/x
and using
2 → 1/2
to denote
g(2) = 1/2
 we see that :
x → 1 - 1/x → 1/(1-x) →x

so that:
g(g(g(x))) = x.

Therefore, whatever x 6= 0, 1 we start with, we will always get three equations in the three “unknowns” F(x), F(g(x)) and F(g(g(x))).
Now solve these equations to get a formula for F(x)

As,
h(x) = (1+x)/(1−x)
which satisfies h(h(h(h(x)))) = x

Now, mapping x to h(x) corresponds to rotating the circle by ninety degrees.

7 0
3 years ago
I need some help with math
Valentin [98]

Answer:

PT, VP

Step-by-step explanation:

if p is the center and T V and W are on the circle

the radius goes from the center of the circle to the edge of the circle

then PW PT and PW are radii of the circle


6 0
3 years ago
You know that a number 8 less than 60 is the number 52. so, you could rewrite your answer from the previous part as, "what numbe
svetoff [14.1K]
I'm a little confused by your question. 

You said 60-8 = 52 which is true.

Then, you asked 4x = 52 in an integer form
                           x = 52/4
                           x = 13. (Is that what you're asking?)

I'm not sure if this helps, but please comment if you need any help! Hope this helps though! :D
4 0
3 years ago
27.) Find the sum of the length of line segments EF and CD
Lelechka [254]

Answer:

5√10

Step-by-step explanation:

The distance between two points A(x_1,y_1) and B(x_2,y_2) on the coordinate plane is given by:

|AB|=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2 }

From the image attached the coordinates of the points are E(-1, -1), F(8, -4), C(-7, -4) and D(-1, 2).

Hence the lengths of the line segment EF and CD are:

|EF|=\sqrt{(8-(-1))^2+(-4-(-1))^2} =\sqrt{90}=3\sqrt{10} \\\\CD=\sqrt{(-1-(-7))^2+(-2-(-4))^2}=\sqrt{40}  =2\sqrt{10} \\\\Therefore:\\\\|EF|+|CD|=3\sqrt{10} +2\sqrt{10} =5\sqrt{10}

6 0
3 years ago
Y/5 = 8/7 solve for y.
Mariana [72]
Y is 40/7
that will be <span>5.71428571429

</span>
7 0
3 years ago
Read 2 more answers
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