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3 years ago

6|3-2z| = 42??How do we answer this??

Mathematics

1 answer:

lorasvet [3.4K]3 years ago

4 0

$6(3 - 2z) = 42 \\ 18 - 12z = 42 \\ - 12z + 18 - 42 = 0 \\ - z + \frac{3}{2} - 2 = 0 \\ z = - \frac{3}{2} + 2$

the answer is ....

i hope it helps u

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7x² + 6x - 1<br> Algebra 3|factoring

GaryK [48]

Answer:

(7 x - 1) (x + 1)

Step-by-step explanation:

Factor the following:

7 x^2 + 6 x - 1

Factor the quadratic 7 x^2 + 6 x - 1. The coefficient of x^2 is 7 and the constant term is -1. The product of 7 and -1 is -7. The factors of -7 which sum to 6 are -1 and 7. So 7 x^2 + 6 x - 1 = 7 x^2 + 7 x - x - 1 = (7 x - 1) + x (7 x - 1):

(7 x - 1) + x (7 x - 1)

Factor 7 x - 1 from (7 x - 1) + x (7 x - 1):

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4 years ago

An agency is studying the income of store managers in the retail industry. A random sample of 25 managers reveals a sample mean

aalyn [17]

Answer:

The Confidence Interval = ($44,745.55 , $46,094.45)

Step-by-step explanation:

The formula for Confidence Interval =

Confidence Interval = Mean ± z × Standard deviation/√n

Where n = number of samples = 25 managers

Standard deviation = $2,050

Mean = $45,420

z = z score of the given confidence interval

= z score of 90% confidence interval

= 1.645

Confidence Interval = $45,420 ± 1.645 × $2,050/√25

= $45,420 ± 1.645 × $2,050/5

= $45,420 ± 674.45

Confidence Interval =

$45,420 - 674.45 = $44,745.55

$45,420 + 674.45 = $46,094.45

Therefore, the Confidence Interval = ($44,745.55 , $46,094.45)

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3 years ago

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4 years ago

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Answer:

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Step-by-step explanation:

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3 years ago

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dusya [7]

Solution:

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The clock loses 10 minutes each hour,

so it loses 5 minutes every half-hour,

and it loses 1 minute very 6 minutes.

It is 12:50 PM at 1:00 o'clock.

It is 1:40 PM at 2:00 o'clock.

It is 2:30 PM at 3:00 o'clock.

It is 2:55 PM at 3:30 o'clock.

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7 0

3 years ago

6|3-2z| = 42??How do we answer this??​

6|3-2z| = 42??How do we answer this??