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3 years ago

Please someone help me i’m taking a quiz and just please help

Mathematics

1 answer:

kkurt [141]3 years ago

5 0

Answer:

X= $4\sqrt 3$ and Y= 8

Step-by-step explanation:

i hope this helps and i hope you have a good day and I also hope you do well on your quiz

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I need the answer to this problem. For math 3(5y+2)

Anni [7]

Answer:

15y +6

Step-by-step explanation:

3(5y+2)

Distribute

3*5y +3*2

15y +6

6 0

3 years ago

Un paese contava 12000 abitanti all'inizio del 2007 durante l'anno i nati sono 1,7 % del totale degli abitanti e morti sono 2% c

grandymaker [24]

Step-by-step explanation:

12000 abitanti all'inizio del 2007

nati: 1.7% × 12000 = 204

morti: 2% × 12000 = 240

popolazione all'inizio del 2008: 12000 + 204 - 240 = 11964

6 0

2 years ago

Stefania has a collection 1432 mp3s. Of those songs, 25% are rock songs and 55% are rap songs. How many songs are other types of

Katena32 [7]

Start answering here

7 0

3 years ago

(Small sample confidence intervals for a population mean) suppose you are taking a sampling of 15 measurements. you find that x=

Luda [366]

Answer:

The 99% confidence interval is $71.67 < \mu < 78.33$

Step-by-step explanation:

From the question we are told that

The sample size is $n = 15$

The sample mean is $\= x = 75$

The standard deviation is $s = 5$

Given that confidence is 99% then the level of significance is mathematically represented as

$\alpha = 100 - 99$

$\alpha = 1\%$

$\alpha = 0.01$

Next we obtain the critical values of $\frac{ \alpha }{2}$ from the normal distribution table

The value is

$Z_{\frac{ \alpha }{2} } = 2.58$

Generally the margin for error is mathematically represented as

$E = Z_{\frac{ \alpha }{2} } * \frac{ s}{ \sqrt{n} }$

=> $E = 2.58 * \frac{ 5}{ \sqrt{15} }$

=> $E = 3.3307$

The 99% confidence interval is mathematically represented as

$\= x -E < \mu < \= x +E$

=> $75 - 3.3307 < \mu$

=> $71.67 < \mu < 78.33$

3 0

3 years ago

(3) There are 2 mixtures of light purple paint. Mixture A is made with 5 cups of

ivann1987 [24]

Answer:

Mixture A

Step-by-step explanation:

besause it uses less portion of white paint

6 0

2 years ago