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anzhelika [568]
4 years ago
11

Alexander is building a rectangular pen in his backyard for his dog. The pen will have a length of 13 feet and a width of 2x fee

t. What expressions represent the total amount of fencing needed for the pen?
Mathematics
1 answer:
faust18 [17]4 years ago
3 0

Answer:

4x+26

Step-by-step explanation:

to buy fencing, you need to find the perimeter of the pen. The perimeter is found by adding all sides together.

So, 13+13+2x+2x=4x+26

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How would i solve Simplify. -6(x-3)-4(y+5)+(-5)(7-2b) because i had it ona test and put it in wolfram alpha but for the first ti
Alexeev081 [22]

The distributive properties applies every time you want to multiply a whole parenthesis by a number.

As the name suggests, you "distribute" the number to all terms in the parenthesis: you perform as many multiplication as many terms in the parenthesis.

So, for example, we begin with

-6(x-3)

So, we multiply -6 times both terms in the parenthesis, and sum the results:

-6(x-3) = -6\cdot x + (-6)\cdot(-3) = -6x+18

And so on with the other terms:

-4(y+5) = -4\cdot y + (-4)\cdot5 = -4y-20

(-5)(7-2b) = -5\cdot 7 + (-5)\cdot(-2b) = -35+10b

Now sum all the pieces together:

-6(x-3)-4(y+5)+(-5)(7-2b) = -6x+18 + (-4y-20) + (-35+10b) = -6x-4y+10b + 18 - 20 - 35 =-6x-4y+10b -37

3 0
4 years ago
Read 2 more answers
Jo's collection contains US, Indian and British stamps. If the ratio of US to Indian stamps is 5 to 2 and the ratio of Indian to
andreev551 [17]

Answer:(E). 25:2

Step-by-step explanation:

First ratio:

Us : India is 5 : 2

Second ratio

India : British is 5 : 1

multiply(5:2) by 5 and multiply (5:1) by 2 to balance the India stamps.

Therefore now

Us : India is 25 : 10

India : British is 10 : 2

The ratio of us : British is 25:2

5 0
3 years ago
Find the net change in the value of the function between the given inputs. h(t) = t2 + 2; from −5 to 8
pashok25 [27]

Answer:

39

Step-by-step explanation:

Given the function :

h(t) = t² + 2

From t = 5 to t = 8

when, t = 5

h(5) = 5² + 2

h(5) = 25 + 2

h(t) at t = 5 ; equals 27

when, t = 8

h(5) = 8² + 2

h(5) = 64 + 2

h(t) at t = 8 ; equals 66

Net Change :

h(8). - h(5)

66 - 27 = 39

3 0
3 years ago
John is 5 years older than Mary. In 10 years, twice John's age decreased by Mary's age is 35, and John's age will be
Digiron [165]

Answer:

M=15

J=20

Step-by-step explanation:

Let J and M be the present age of John and Mary respectively:

J=M+5

2(J+10)−(M+10)=35

2(M+5+10)−(M+10)=35

2M+30−M−10=35

M=15

J=20

6 0
3 years ago
PLEASE HELP ASAP, DUE IN AN HR!!!
rusak2 [61]

Answer:

\dfrac38 \text{ sq in}

Step-by-step explanation:

plug 1/4 into the formula for surface area and simplify to get 6/16, or 3/8.

7 0
3 years ago
Read 2 more answers
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