3 years ago

Please help!!!!!!!!!

Mathematics

1 answer:

ra1l [238]3 years ago

4 0

Answer:

Step-by-step explanation:

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How do I start this?? what is the answer, im not really good at math

storchak [24]

-12 would be it because 2 negatives make a positive so -11+23 is -12

8 0

3 years ago

Find the z score that cuts-off the largest 9% under the standard normal curve. a) -1.34 b) 1.34 c) 0.536 d) 1.28

topjm [15]

Answer:

b) 1.34

Step-by-step explanation:

The z score is used to determine the number of standard deviations by which the raw score is above or below the mean. If the z score is positive then the z score is above the mean while for a negative z score implies that it is below the mean. The z score is given by:

$z=\frac{x-\mu}{\sigma}$

For the largest 9%, the score is 100% - 9% = 91% = 0.91

From the normal distribution table, the z score that corresponds to 0.91 is 1.34

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3 years ago

A powdered drink mix calls for a ratio of powder to water of 1:8. If there are 32 cups of powder, how many total cups of water a

Kruka [31]

256 are needed because 32x1=32 that means the ratio would be 32:256 because 8 x 32 = 256
The final ratio would stay the same as 1:8 though because it would be simplified.
Hope this helped.

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3 years ago

Emma works in a department store selling

IceJOKER [234]

Answer:

$320

Step-by-step explanation:

She made $800 of sales right and her paid commision is 15% so there she receives:15%×$800=$120+a guaranteed $200 dollars each week =$320

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3 years ago

Help plz. 6th grade math

evablogger [386]

Answer:

2.5z^2+3z+4.2

Step-by-step explanation:

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3 years ago

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