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3 years ago

Which sample is biased?

Mathematics

2 answers:

Vinil7 [7]3 years ago

7 0

Answer:

1) interviews of random teenagers who attended a rock concert to find out which musician teens enjoy most

Step-by-step explanation:

cluponka [151]3 years ago

6 0

I say it is 2, because they are surveying just 7th graders instead of making it a school wide survey

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What is the axis of symmetry of h(x) = 6x2 − 60x + 147?

Shalnov [3]

Hello :
h(x) = 6x² − 60x + 147= (x² -2(30)x+30²)-30²+147
h(x) = (x-30)²-753 .....(vertex form)
the axis of symmetry is the line of equation : x=30

4 0

3 years ago

Read 2 more answers

If a:b =2:3 write b as a fraction of a

Hatshy [7]

Answer:

given ,

$\fbox{a:b = 2:3}$

According to Question ,

we've to write b as a fraction of a.

thus , we know that

$a:b = \frac{a}{b} \\ \\ \dashrightarrow{2:3 = \frac{2}{3} }$

now to represent b as a fraction of a ,

we'll have to consider the ratio as b : a

which means ,

$b:a = inverse \: of \: a:b \\ \dashrightarrow{ b:a = \frac{b}{a} = \frac{3}{2} }$

_____________________________

hope helpful :D

6 0

3 years ago

Read 2 more answers

How does finding the square root of a number compare to finding the cube root of a number?

Setler79 [48]

Answer:

See explanation below

Step-by-step explanation:

To find the principal square root of a number, we the number with an index of 2. The base then become the principal square root.

In the same way, we find the cube root of a number by writing the number with an index of 3 and the base becomes the cube root of the given number.

For instance:

$64=8^2\implies 8=\sqrt{64}$

$64=4^3\implies 4=\sqrt[3]{64}$

8 0

3 years ago

Simplify 2y^2 + 2y + 2y + 2x^2.

klio [65]

Answer:

2x^2+2y^2+4y would be your answer

Step-by-step explanation:

7 0

3 years ago

How many yards equals 765 inches?

DerKrebs [107]

1 yard = 3 feet

1 foot = 12 inches

so 36 inches = 1 yard

765 / 36 = 21.25 yards

8 0

3 years ago