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Alika [10]
3 years ago
7

What is the value of the expression below when z=2 b.

Mathematics
2 answers:
Yakvenalex [24]3 years ago
6 0

14 is your answer

Answer:

5z²-z-4 when z=2

5×2²-2-4

5×4-6

20-6

14

yan [13]3 years ago
5 0

14

Step-by-step explanation:

5(2)^2 -2 -4

5(4)-6

20-6

14

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Hunter-Best [27]

Answer:

See below  

Step-by-step explanation:

It looks like

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3 0
3 years ago
P(t) = t^2- t; Find p(6)
Mars2501 [29]

Answer:

P(t)=30

Step-by-step explanation:

Plug in t=6 into the equation: P(t)=t^2-t

So P(t)= (6)^2-6

P(t)=36-6

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4 0
2 years ago
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2 years ago
a researcher at a major clinic wishes to estimate the proportion of the adult population of the united states that has sleep dep
Anna11 [10]

Answer:

The estimate of a population proportion is approximately 541.

Step-by-step explanation:

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As, p is not defined so we use the standard p and q which is 0.5 and 0.5.

The reason for this is we have to choose form 0.1 to 0.9 both values of p and q, we will find the maximum value of pq occurs when they both are 0.5.

Next, we will find the value of (Z/2) by looking at the Z-table, we will find that at 98% confidence (Z/2) = 2.326. Now we start substituting the values in the above formula

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5 0
3 years ago
First examples pt 1 no one answer
andrew11 [14]

Answer:

  It takes the second worker 11 hours to do the job alone  

Step-by-step explanation:

The problem tells you how to work it.

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x = 11 tells you the second worker takes 11 hours to do the job alone.

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You can also work directly with the fractions. Subtract 1/11 and you have ...

  1/x = 1/11

It should not be a real stretch to see that x=11. If you need, you can multiply both sides by 11x to get 11=x.

3 0
3 years ago
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