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alexandr402 [8]
3 years ago
7

Find the perimeter of a rectangular strip of board is 3.28m long and 7.5m

Mathematics
1 answer:
OLEGan [10]3 years ago
8 0

Answer:

21.56 m

Step-by-step explanation:

2(3.28) + 2(7.5)

(twos represent the sides)

6.56 + 15

= 21.56 m

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System of equations<br><br>y=1/2x +5<br>y=3x -5​
Art [367]

Answer: 4

Step-by-step explanation:

Set them equal to each other since they're both equal to y

3x-5=.5x +5

add 5 to both sides

3x=.5x+10

subtract .5x from both sides

2.5x=10

divide both sides by 2.5

x= 4

5 0
3 years ago
The difference of 2 squared numbers equals 53, what are the numbers​
Eva8 [605]

Answer:

  27, 26

Step-by-step explanation:

  27^2 -26^2 = 729 -676 = 53

If the numbers are integers, they must differ by an odd number. For some odd number k, we will have ...

  (x +k)^2 -x^2 = 53

  2xk +k^2 = 53

  x = (53 -k^2)/(2k)

  x = 53/(2k) -k/2

The second term is an odd multiple of 1/2. The first term will be an odd multiple of 1/2 only for k=1. For k = 1, we have ...

  x = (53 -1)/2 = 26

The two numbers are 26 and 27.

8 0
3 years ago
The annual fixed costs of owning a small sedan are $4407, assuming the car is completely paid for. The cost to drive the car is
vodomira [7]

Answer:

y(Cost)=.17x(x=miles)+4407

y=.17x+4407

Step-by-step explanation:

The cost of the vehicle is 4407$ fixed, with .17$ per mile. A liner equation, y=mx+b can be substituted with m being the cost per mile and 4407$ being the fixed annual value. Y is the total Cost of everything.

7 0
1 year ago
1. Which is the inverse of the function f(x)= = 1/3x + 5?​
kotykmax [81]

Answer:0

Step-by-step explanation:

0

5 0
3 years ago
Find the value of f'(4) when<br> f(x)=5/3x^3/2+8x^1/2
Gala2k [10]
To figure this out plug in 4 for x

f(4)=5/3(4)^3/2+8(4)^1/2 = 5/3(8) + 8(2)
= 5/3 x 8 + 16 = 40/3 +16 = 88/3

Hope this helps!
5 0
3 years ago
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