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MrMuchimi
3 years ago
14

A bicycle shop sells only bicycles and tricycles. Altogther there are 23 seats and 50 wheels. How many bicycles and tricycles ar

e there?
Mathematics
1 answer:
slamgirl [31]3 years ago
8 0

Answer:

The number of bicycles is 19.

and the number of tricycles is 4.

Step-by-step explanation:

As we know that the number of seats in bicycles as well as in tricycles is 1.

The number of wheels in bicycles is 2

and the number of wheels in tricycles is 3.

Let the number of bicycles be x.

and the number of tricycles be y.

Thus using the given information we can make equation as,

x + y = 23

and, 2x + 3y = 50

Solving these two equations:

We get, x = 19 and y = 4

Thus the number of bicycles is 19.

and the number of tricycles is 4.

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A semi-circle with a diameter of 4 is rotated around its diameter one full rotation, what is the volume of the solid generated b
iris [78.8K]

The volume of the solid generated by the revolution is 33.5 cubic units.

<u>Step-by-step explanation:</u>

It is given that, the diameter of the semi-circle is 4 and it is rotated to one full rotation around its diameter.

A solid generated when a semicircle is being rotated about its diameter is called a "SPHERE".

Therefore, the volume of the solid generated by the revolution is the volume of the sphere.

The formula for volume of the sphere is given by,

Volume of sphere = (4/3)πr³

where, r is the radius and π has the default value of 3.14

Here, the given diameter is 4.

To find the radius = diameter/2

radius = 4/2 = 2.

Now, to calculate volume of sphere substitute r=2 and π=3.14

volume of the sphere = (4/3)×3.14×2³

⇒ (4/3)×3.14×8

⇒ 100.48 / 3

⇒ 33.49 (approximately 33.5)

Therefore, the volume of the solid generated by the revolution is 33.5 cubic units.

8 0
3 years ago
The variable q represents a positive integer. Does 3(59 + 9) + 5q represent a number that is greater than, less than, or equal t
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Depends on the value of q.

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7 0
3 years ago
Can I get help on each one and not just answers please
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1. To get the decimal, you divide 8 by 7 and add that to the back of ten. One eighth is .125. .125*7= 0.875, so your answer is 10.875.

2. A fifth is .2, so your answer is 9.8.

3. One ninth is .11..., which that repeating forever, so 8/9 is .89. You round the last eighth up.

4. 11 goes into 24 twice. Subtract 22 to get 2. Add a decimal and a zero. 11 goes into 20 once. Subtract 11 to get 9. Add another zero. 11 goes into 90 8 times. Subtract 88 to get 2. So your answer is 9.2. Sorry, it's hard to do long division on Brainly haha.

5. 6/27 is equal to 3*2/3*9, which is equal to 2/9. 2/9s is .22...

6. I can't see this one.

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10. Move the decimal over the left three times: .00247

11. Move the decimal over to the left three times: .00039

12. Can't read all of this one.

Hope I helped!

4 0
4 years ago
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