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kompoz [17]
3 years ago
14

What is the complete factorization of x2 - 6x + 9?

Mathematics
2 answers:
KatRina [158]3 years ago
7 0

Answer:

C

Step-by-step explanation:

I know because i just took the test

lord [1]3 years ago
3 0

Answer:

D(x-3)2

Step-by-step explanation:

(x - 3)2 ➡ (x - 3) × (x - 3) if you multiply each expression it will be like this

x^2 - 3x -3x + 9 ➡ x^2 - 6x + 9

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What is the solution to the system of linear equations graphed below?
Lelechka [254]

Answer: The answer was A,

(3 1/2 , -4 )

For people who are taking the test on edge.

Step-by-step explanation:

5 0
3 years ago
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True or false a square has both the characteristics of a rectangle and a rhombus
Serga [27]
The answer is true hop that helped
3 0
3 years ago
Twice a real number is 6 times more than half that number. Determine this<br> number
Jet001 [13]

Answer:

4

Step-by-step explanation:

Assign x for the number. Write an equation.

2x = 6+.5x (I'm guessing you means "6 more than half that number")

1.5x = 6 -->

x = 4

5 0
3 years ago
The life times of light bulbs produced by a particular manufacturer have a mean of 1,200 hours and a standard deviation of 400 h
Nezavi [6.7K]

Answer:

a. 1200hours

b.  σ² = 400² =160000hour

c. standard error = 133.33

d. for 9 lightbulb it is likely that 9*0.146 = 1.31 bulbs will have lives of fewer than 1,050 hours?

Step-by-step explanation:

mean of 1,200 hours

σ, a standard deviation of 400 hours.

Sample size, N =  nine bulbs,

a) mean of the sample mean lifetime: is given as 1,200 hours

b) variance of the sample mean is the square of the  σ, a standard deviation of 400 hours.

σ² = 400² =160000hours

c) What is the standard error of the sample mean?

The standard deviation of a sampling distribution of mean values is called the standard error of the means,

standard error of the means,  σx = σ √N

The formula for the standard error of the means is true for all values infinite number of sample, N.

σx = σ √N

     =400  √9 = 400/3 =133.3333

d) the probability that, on average, those nine lightbulbs have lives of fewer than 1,050 hours

The area under part of a normal probability curve is  directly proportional to probability and the value is calculated as

z = ( x₁−x) /σ

where z = propability of normal curve

x₁ = variate mean = 1050hours

x = mean of 1200hours

σ = standard deviation = 400

applying the formula,

z= (1050-1200)/400

z = 150/400 =0.375

Using a table of partial areas beneath the standardized normal curve (see Table of normal curve, a z-value of 0.375 corresponds to an area of 0.1460 between the mean value.

Thus the probability of a lightbulbs having lives of fewer than 1,050 hours is 0.1460.

for 9 lightbulb it is likely that 9*0.146 i.e. 1.31 bulbs will have lives of fewer than 1,050 hours?  

8 0
3 years ago
A case of soda has 24 cans in it. There are 12 cases of soda. 1) What is the total number of cans of soda there are? 2) The soda
ElenaW [278]

Answer:

1) 288 cans

2) about 41 cans per team

Step-by-step explanation:

For number one you would multiply the numbers

24x12=288

there are 288 cans in total

2) divide 288 by 7 to distribute the cans evenly

each team gets about 41 cans

6 0
3 years ago
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