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DerKrebs [107]
3 years ago
11

Solve the equation 12 + 0.35x = 20.05

Mathematics
2 answers:
zubka84 [21]3 years ago
7 0
X=23 First, you have to subtract 12 by 12 to cancel it out. Next, you have to do the same thing to 20.05. 20.05 minus 12 is 8.05. All you have left is .35x. To get rid of the this you have to divide .35x by .35. Now all you have left is x. Finally you have to do the same thing to 8.05. 8.05 divided by .35 is 23. So, x=23
lapo4ka [179]3 years ago
4 0
12+0.35x=20.05
12 x 100+0.35x x 100= 20.05 x 100
1200+35x=2005
1200+35x-1200=2005-1200
35x=805
x=23

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A road bike has a wheel diameter of 622 mm. What is the circumference of the wheel? Use 3.14 for pi
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Answer:

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Step-by-step explanation:

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Since Diameter = 2*radius we can replace that in the circumference equation giving us:

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We know Diameter = 622 mm and pi = 3.14 so:

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3 years ago
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Classwork 12.1 surface area
s344n2d4d5 [400]

Answer:

6) LA = 90 units² and SA = 202 units²

7) LA = 377 units² and SA = 477.5 units²

8) LA = 208 units² and SA = 232 units²

9) LA = 455 units² and SA = 591 units²

Step-by-step explanation:

* Lets revise the rules of lateral area and surface area

- Lateral area of the solid = perimeter of its base × its height

- Surface area = lateral area + 2 × area of its base

* Now lets solve the problems

6) The solid is a rectangular prism

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∵ Perimeter of the rectangle = 2(L + W)

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7) The solid is a cylinder

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- Its height is 15 units

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∴ Area of the base = 1/2 × 6 × 4 = 12 units²

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