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3 years ago

5. Brody bought 12 books. Two-thirds of the books are science fiction.

Mathematics

2 answers:

Stella [2.4K]3 years ago

7 0

Answer:

Step-by-step explanation:

12 divided by 3 is 4 and since its 2/3 you multiple 4 times 2 giving you 8

DIA [1.3K]3 years ago

7 0

Answer:

Step-by-step explanation:

Multiply amount of books by the fraction of

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You intend to draw a random sample in order to test a hypothesis about an unknown population mean. You will use a hypothesis tes

Gre4nikov [31]

Answer:

The correct order is :

1. Determine the null and alternative hypothesis.

2. Select a sample and compute the z - score for the sample mean.

3. Determine the probability at which you will conclude that the sample outcome is very unlikely.

4. Make a decision about the unknown population.

Step-by-step explanation:

The correct order of the steps of a hypothesis test is given following

1. Determine the null and alternative hypothesis.

2. Select a sample and compute the z - score for the sample mean.

3. Determine the probability at which you will conclude that the sample outcome is very unlikely.

4. Make a decision about the unknown population.

These steps are performed in the given sequence to test a hypothesis.

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3 years ago

6x-1=11 solve equation

marin [14]

Answer:

x = 2

Step-by-step explanation:

6x-1=11

Add 1 to each side

6x-1+1=11+1

6x = 12

Divide by 6

6x/6 = 12/6

x = 2

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3 years ago

Read 2 more answers

A stack of two hundred ten cards is placed next to a ruler, and the height of the stack is measured to be 7/8 inches. How thick

Naily [24]

(7/8) divided by 200
each card is 0.004375 inches thick

3 0

3 years ago

Need help with this.

sweet [91]

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Let t as y² + 5y .

${y}^{2} + 5y = t$

Rewrite the equation :

$t - \frac{36}{t} = 0 \\$

Multiply sides by t

$t \times (t - \frac{36}{t} ) = t \times 0 \\$

${t}^{2} - 36 = 0$

Add sides 36

${t}^{2} - 36 + 36 = 0 + 36$

${t}^{2} = 36$

$t = ± \: 6$

_________________________________

So :

${y}^{2} + 5y = 6$

Subtract sides 6

${y}^{2} + 5y - 6 = 6 - 6$

${y}^{2} + 5y - 6 = 0$

$(y + 6)(y - 1) = 0$

$y = - 6 \: \: or \: \: y = 1$

##############################

${y}^{2} +5y = - 6$

$No \: \: solution$

_________________________________

Thus (( y = 1 )) and (( y = - 6 )) are the roots of the equation .

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3 years ago

Please help

Tamiku [17]

Add 6 7 and two you get 15 xy subtract -11 and -4 you get positive 7xy add 15 and 7 and you get 22xy

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