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SVEN [57.7K]
3 years ago
7

a rectangle has a length of 2x+ 7 and a width of3x+8y. write and simplify an express for the perimeter of that rectangle

Mathematics
1 answer:
musickatia [10]3 years ago
8 0
You got to add like terms so 2x+3x =5x then you add the 7 to it and you get 12 then you take 8y and divide 12 and you should get 1.5
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A piece of wire 5 m long is cut into two pieces. one piece is bent into a square and the other is bent into an equilateral trian
laiz [17]
They should use 5 meters of tape since u syarted off but now u will use 2 and a half of wire i mean wire
6 0
4 years ago
The radius of the circle is increasing at a rate of 2 meters per minute and the sides of the square are increasing at a rate of
Lunna [17]

Answer:

Change in area=24\pi-48

Step-by-step explanation:

Let s will be the side of square and r will be the radius of circle.

Then two given conditions are

1)dr/dt=2 m/s

2)ds/dt=1 m/s

Area enclosed=(Area of square)-(Area of circle)

Area of square=s^{2}

Area of circle=\pi r^{2}

Area enclosed=(\pi  r^{2})-s^{2}

dA/dt=2\pir(dr/dt)-2s(ds/dt)

At s=24,and r=6

dA/dt=2(\pi)(6)(2)-2(24)(1)

Change in area=24\pi-48

6 0
3 years ago
-0.5 = -4/7<br> True<br> False
taurus [48]

Answer:

Step-by-step explanation:

false

7 0
3 years ago
Read 2 more answers
I need help guys plsss
malfutka [58]

Answer:

6. r = 21 cm

7. A = 155.5 m²

Step-by-step explanation:

7: Formula for arc length is;

S = (θ/360) × 2πr

We are given;

S = 51 cm

θ = 139°

Thus;

51 = (139/360) × 2π × r

Making r the subject;

r = (51 × 360)/(2π × 139)

r ≈ 21 cm

8) Area of sector is gotten from the formula;

A = (θ/360) × πr²

A = (220/360) × (π × 9²)

A = 155.5 m²

8 0
3 years ago
Pls answer clearly thank you will be marking smartest correct answer!
balandron [24]

Number 9 is no because if you were to divide that it be a decimal and a decimal is an irrational number.

Number 10 is yes. When divide 2 by 5 you get 0.4 which is a terminating number because it never ends

3 0
3 years ago
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