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nikklg [1K]
3 years ago
12

A wooden toy kit has different painted solids. One solid is a cylinder with diameter 2cm and height 2cm. what is it's volume

Mathematics
2 answers:
jarptica [38.1K]3 years ago
4 0
V=pi (r^2) (h)
v= 3.14  * 1 * 2
V= 6.28
Flauer [41]3 years ago
4 0
The answer is four (4) because you need to multiply 2x2=4



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You earned 90% on a science quiz. You answered 27 questions correctly. How many questions were on the test?
Scilla [17]

Answer:

There were 30 questions on the test.

Step-by-step explanation:

1. Set up your equation: 27/90 = y/100

2. Next you want to cross multiply: 2700 = 90y or 270 = 9y

3. Divide 270 by 9 to find your y: y = 30

There were 30 questions on the test.

7 0
3 years ago
A researcher studying public opinion of proposed Social Security changes obtains a simple random sample of 35 adult Americans an
Liula [17]

Answer:

Adult required in the case of “a” 28 and in the case of “b” the adult requirement is 19.

Step-by-step explanation:

(a) The percentage of adult that support the change is 20 percent.

Now calculate the number of adult required.

Given p = 0.20

Use the below condition:

np(1 – p) \geq 10 \\n \times 0.20 (1 – 0.20) = 10 \\n = 63 round off

Since 35 adults are already there so required adults are 63 -35 = 28

(b) The percentage of adult that support the change is 25 percent.

Now calculate the number of adult required.

Given p = 0.25

Use the below condition:

np(1 – p) \geq 10 \\n \times 0.25 (1 – 0.25) = 10 \\n = 54 (round off)

Since 35 adults are already there so required adults are 54 -35 = 19 .

6 0
3 years ago
Simplify: 0.810×0.00048 all over 0.000400×0.027
elixir [45]

Answer:

36

Step-by-step explanation:

Okay! This question is a very simple one, but without a calculator, your answer could easily vary from others! So, let´s do this one together!

The equation:

0.810x0.00048/0.000400x0.027

Let´s do the top :

0.810 x 0.00048 = 0.0003888

I will leave these numbers the same until the last part, lets not round them.

Bottom:

0.0004 x 0.027 = 0.0000108

And again I am not going to round this number.

Now we can divide!

0.0003888/0.0000108 = 36

I hope this helped!

4 0
3 years ago
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Question 17 (2 points)
qwelly [4]
The answer is T
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4 0
2 years ago
Find the slope and y intercept of -3x+2y=24
zavuch27 [327]
Slope is 3/2
The Y intercept is 12
5 0
2 years ago
Read 2 more answers
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