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3 years ago

|z-1| greater than or equal to 8 |z-1|>8

1 answer:

4 0

Divide this into 2 equations. (z-1 is less than -8) and (z-1 is greater than 8). than solve the inequalities separately. you should get (z is less than -7) and (z is greater than 9).

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a 12 foot piece of string is cut into two pieces so that the longer piece is 3 feet longer than twice the shorter piece. find th

aleksandr82 [10.1K]

Use the equation
12= 3+2x

8 0

3 years ago

Solve for x -2x + 4 = 6x - 12

aleksklad [387]

Answer:

x=2

Step-by-step explanation:

-2x+4=6x-12 Add 2x to both sides.

+2x +2x

4=8x-12 Add 12 to both sides.

+12 +12

16=8x Divide by 8 on both sides.

/8 /8

2=x

Hope this helps you out and have a great day (～^▽^)～

5 0

3 years ago

Read 2 more answers

The polynomial given below has _____ root(s).2x2 + 5x + 2

Nastasia [14]

2x^2 + 5x + 2 = 0
(x + 2)(2x + 1) = 0
x = -2 x = - 1/2
Letter C

8 0

3 years ago

What is the value of X I don’t understand this

mash [69]

Answer:

X=4

Step-by-step explanation:

28+8=36

36/9=4

9*4=36

36-8=28

x=4

4 0

3 years ago

A recent survey indicated that the average amount spent for breakfast by business managers was $9.33 with a standard deviation o

olasank [31]

Answer:

$t=\frac{\bar X-\mu_o}{\frac{s}{\sqrt{n}}}$ (1)

Replacing the info given we got:

$t=\frac{9.41-9.33}{\frac{0.24}{\sqrt{81}}}=3$

Step-by-step explanation:

Information given

$\bar X=9.41$ represent the sample mean

$s=0.24$ represent the sample standard deviation

$n=81$ sample size

$\mu_o =9.33$ represent the value to verify

$\alpha=0.05$ represent the significance level

t would represent the statistic

$p_v$ represent the p value

Hypothesis to test

We want to test if the true mean is higher than 9.33, the system of hypothesis would be:

Null hypothesis: $\mu \leq 9.33$

Alternative hypothesis: $\mu > 9.33$

The statistic is given by:

$t=\frac{\bar X-\mu_o}{\frac{s}{\sqrt{n}}}$ (1)

Replacing the info given we got:

$t=\frac{9.41-9.33}{\frac{0.24}{\sqrt{81}}}=3$

4 0

3 years ago