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Hatshy [7]
2 years ago
12

I think the answer is A Correct?

Mathematics
2 answers:
Salsk061 [2.6K]2 years ago
8 0
To answer this question, you would divide the number of rock CDs by the total number of CDs or in other words "part over whole". Then you multiply this number by 100 to make it into a percent instead of a decimal.

Total Number of Rock CDs = 6

Total Number of CDs = 6+12+8+4+10 = 40

6/40 = .15
.15 × 100 = 15 %

This means that the correct answer is indeed A!

I hope this helps :D
xeze [42]2 years ago
4 0

You can see that there are 6 rock CDs, over a total of

6+10+4+8+12 = 40

So, the ratio of rock CDs over the total number of CDs is

\dfrac{6}{40} = 0.15

Which is 15%.

So, yes, the answer is A

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jane paid $40 for an item after she received a 20% discount. janes friend says this means that the original price of the item is
olga55 [171]
48x0.2= $9.6
$48-9.6=$38.40 Her friend is incorrect. 
40/48 =0.83 or about 83% So, in this case she only got 17% off. :)
<span>Hope I helped </span>
3 0
3 years ago
Y=2x-4 -21x + 3y = 3
JulijaS [17]

Answer:

It's a stretch, but I'm gonna guess Y = 12.

Step-by-step explanation:

3 0
3 years ago
Anyone who plays or watches sports has heard of the "home field advantage." Teams tend to win more often when they play at home.
AveGali [126]

Answer:

H0 : μ = 0.5

H0 : μ > 0.5

Kindly check explanation

Step-by-step explanation:

H0 : μ = 0.5

H0 : μ > 0.5

We perform a right tailed test :

Sample proportion :

Number of games won, x = 142

Number of games, n = 250

phat = x / n = 142 / 250 = 0.568 = 56.8%

Yes, it is consistent

Test statistic :

(phat - p) * √Phat(1-Phat)/n

1 -Phat = 1 -0.568 = 0.432

(0.568 - 0.5) /√(0.568*0.432)/250

0.068 / 0.0313289

= 2.17

The Pvalue using the z test statistic :

Pvalue = 0.015

α = 0.03

Since ;

Pvalue < α ; We reject the null and conclude that teams tend to win more often when they play at home.

8 0
3 years ago
Drag the tiles to the correct boxes to complete the pairs. Not all tiles will be used.
Misha Larkins [42]

Answer:

divide the determine by 2 and your answer will match the radius

4 0
2 years ago
Please help, need answer fast!
AleksandrR [38]
The answer is
B. 13ab

5ab+9ab-ab
=(5ab+9ab)-ab
14ab-ab
=13ab

Hope it helped : )
3 0
3 years ago
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