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Marysya12 [62]
3 years ago
14

The table displays the mean for seven random samples.

Mathematics
2 answers:
Vikentia [17]3 years ago
8 0

Answer with explanation:

Mean of seven Distinct random Samples are : →23.2, 26.7,24.9,24.6,28.0, 26.3, 23.4.

Mean of Population is equal to Mean of seven Distinct random Samples of Population.

      =\frac{23.2+26.7+24.9+24.6+28.0+26.3+23.4}{7}\\\\=\frac{177.1}{7}\\\\=25.3

⇒The Value which is the best estimate of the mean of the population is:

  Option B:→ 24.2

Alborosie3 years ago
7 0

Answer:

B 24.2

Step-by-step explanation:

your welcome

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Write words to match the expression (5x2) x (3x15)
Katena32 [7]

<span><span>Answer by </span>nerdybill(7384)   (Show Source):You can put this solution on YOUR website!
<span>The sum of 5 times a number and -2, added to nine times a number.
.
Looking at the first part:
The sum of '5 times a number' and '-2'
we get
5x + (-2)

or
5x - 2
.
The above is then "added to nine times a number" to get:
5x - 2 + 9x
Combining x's we get:
14x - 2 
</span>
<span>Answer by </span>mizjoice(22)   (Show Source):You can put this solution on YOUR website!
<span>Take it piece by piece: 
5 times a number, rewrite as 5x 
plus -2, nothing to rewrite there, that's already simplified, 

added to nine times a number, rewrite as 9x. 
Now, rewrite as an equation: 
5x-2+9x = (See, it already looks better!) 
Now combine like terms: 
5x + 9x -2= 14x - 2</span></span>
5 0
3 years ago
~Can someone please help me with these questions?~
konstantin123 [22]

Answer:

the answer is B, complementary angles

Step-by-step explanation:

complementary angles are two angles that add up to 180 degrees

105 + 75 = 180

8 0
3 years ago
Um terreno retangular possui o comprimento cinco vezes maior que a largura. Sabendo que o perímetro desse terreno é igual a 180
icang [17]

Responder:

15 m e 75 m

Explicação passo a passo:

Deixar :

Largura = x

Comprimento = 5x

Perímetro = 180

Já o terreno tem uma forma retangular; usamos a relação;

Perímetro = 2 (comprimento + largura)

180 = 2 (5x + x)

180 = 2 (6x)

180 = 12x

180/12 = x

15 = x

Largura = x = 15 metros

Comprimento = 5x = 15 * 5 = 75 metros

Medida de largura e comprimento, respectivamente:

15 m e 75 m

6 0
3 years ago
Karen earns $62.25 for working 9 hours. if the amount she earns varies with the number of hours she works how much will she earn
nata0808 [166]

Answer:

$103.75

Step-by-step explanation:

we know that

Karen earns $62.25 for working 9 hour

so

using proportion

Find out  how much she will  earn for working 15 hours

\frac{62.25}{9}\ \frac{\$}{h}=\frac{x}{15}\ \frac{\$}{h}\\\\x=62.25(15)/9\\\\x=\$103.75

6 0
3 years ago
4. The time taken for passengers to be checked-in for a flight is inversely proportional
Alla [95]

Answer:

90minutes

Step-by-step explanation:

Let the time taken for passengers to be checked-in be t

Let the number of staff working be w;.

If the time taken for passengers to be checked-in for a flight is inversely proportional to the number of staff working then;

t = kw

when t = 30, w = 5

30 = 5k

k = 30/5

k = 6

to get t when w = 15

t = kw

t = 6(15)

t = 90minutes

Hence it will take 90minutes long

6 0
3 years ago
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