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gogolik [260]
3 years ago
5

Consider this topic for a survey: How far do students at Alpha Elementary jump? Which of the following would lead to a biased sa

mple? Randomly choose several students from each grade to test. Test eight 6 th graders. Test the first 5 people listed on each class list. Test everybody in school.
Mathematics
1 answer:
Cloud [144]3 years ago
8 0

The correct answer is c. Biased samples are NOT random. If you choose a couple people from <em>each grade </em>therefor the answer is c.

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Araceli recorded the height (in centimeters) of a pea plant over a 10-day
Bogdan [553]
C is the answer.......
6 0
3 years ago
Two ratios that are equivalent to 5/7
grigory [225]

You could pick just about anything 3/8 is not the same thing as 5/7 and neither is 3/4

Something that is equivalent would be something like 10/14 or 20/28

3 0
3 years ago
What is the product of 7.951x 1.314
gladu [14]

Answer:

10.447614

Step-by-step explanation:

The product of  7.951x 1.314 is 10.447614.

7 0
3 years ago
Expand:<br> 4(5x+5) - 3(2x + 4)
aliina [53]

Answer:

14x + 8

Explanation:

⇒ 4(5x+5) - 3(2x + 4)

distribute inside parenthesis

⇒ 4(5x) + 4(5) - 3(2x) - 3(4)

multiply the variables

⇒ 20x + 20 - 6x - 12

collect like terms

⇒ 20x - 6x + 20 - 12

subtract like term

⇒ 14x + 8

3 0
2 years ago
Read 2 more answers
The area of the square, the
const2013 [10]

Answer:

B.

Step-by-step explanation:

I think your question is missed of key information, allow me to add in and hope it will fit the original one.  

Please have a look at the attached photo.  

My answer:

As given in the question, we know that:

The ratio of the area of the circle to the area  of the square is π/4

  • The formula to find the volume of the cone is:

V = 1/3*the height*the base area

<=> V1 = 1/3*h*πr^{2}

  • The formula to find the volume of the pyramid is:

V2 = 1/3*the height*the base area

<=> V =  1/3*h*4r^{2}

=> the ratio of volume of the cone to the pyramid is:

= \frac{V1}{V2}

= (1/3*h*πr^{2} ) / ( 1/3*h*4r^{2} )

= π/4

S we can conclude that the volume of the cone equals π/4  the volume of the  pyramid

Hope it will find you well.

7 0
3 years ago
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