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Natali [406]
3 years ago
8

I don’t understand how to factor trinomials

Mathematics
2 answers:
noname [10]3 years ago
5 0
3. (X-8)(x+3)
6. (X-4)(x+2)
I don't know if the symbol are correct but I know that the numbers are. I hope this can help you
gayaneshka [121]3 years ago
3 0
When the X term is one, and doesn't have a leading coefficient, then you can factor it using the box and diamond method. look up videos on Khan Academy of the box and diamond method for solving trinomials. For number 9, you have a difference of squares. That means you can factor to just 2 terms. (x+4)(x-4) this works because 16 has an easy square root, and the sign in between is a negative(difference)
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Determine whether the statement is true or false. If it is false, rewrite it as a true statement. The method for selecting a str
RUDIKE [14]

Answer:

The method for selecting a stratified sample is to order a population in some way and then select members of the population at regular intervals. - FALSE.

This can be re written as :The method for selecting a systematic sample is to order a population in some way and then select members of the population at regular intervals.

Explanation for stratified sampling:

In stratified sampling, the members of a population are divided into two or more strata with similar characteristics and then a random sample is selected from each strata. This way ensures that members of each group within a population will be sampled.

Explanation for cluster sampling:

The method for selecting a cluster sample is to order a population in some way and then select members of the population at regular intervals.

In cluster sampling, the population is divided into​​ clusters, and all of the members of one or more​ clusters are selected.

7 0
4 years ago
Noah wants to buy a skateboard that usually sells for $79.99. All merchandise is discounted by 12%. What is the total cost of th
beks73 [17]

Answer:

$74.36 sorry all i got

Step-by-step explanation:

First, we need to determine the sales price of the skateboard. The formula for find the discounted prices is:

Where:

is the sales price of the item: what we are solving for in this part of the problem.

is the regular price of the item: $79.16 for this problem.

is the discount rate: 12% for this problem. "Percent" or "%" means "out of 100" or "per 100", Therefore 12% can be written as  

12

100

Substituting and calculating  

gives

79.16

79.16

12

100

79.16

949.92

100

79.16

9.4992

69.6608

69.66

rounded to the nearest cent.

Now we can find the total price of the item with tax included. The formula for this is

#t = p + (p * r)

Where, this time:

is the total price: what we are solving for in this problem.

is the price of the item: it is the sales price of the item for this problem which is $69.66

is the tax rate: 6.75% or, using the same rule as in the formula above:  

6.75

100

Substituting and calculating  

gives:

69.66

69.66

6.75

100

69.66

470.205

100

69.66

4.70205

74.36205

74.36

rounded to the nearest cent.

Noah would pay a total cost (with the discount and after tax) of $74.36

5 0
3 years ago
Read 2 more answers
See image for question
MAXImum [283]
A,
C(x)= 39x +95
B,
After 61 months
6 0
3 years ago
A lawn mower has a fuel tank that holds 8 gallons
Anna007 [38]
Then it holds 8 gallons.
Comment the rest of the answer if you want. Thanks!
4 0
3 years ago
Aaron tracks the time it takes him to mow lawns by writing coordinate points relating x, the time in hours it takes to mow a law
Alika [10]

Answer:

2 acres/hour

Step-by-step explanation:

Please share the possible answer choices.  Thank you.

If two points on this straight line graph are (3, 1.5) and (5, 2.5), then we can find the slope of this line as follows:

As we move right from x = 3 to x = 5, x (the "run") increases by 2 and y (the "rise") increases by 1.  Thus, the slope of this line is m = rise / run = 2/1, or

m = 2.

                                                                    area mowed

The units of measurement here are m = ----------------------

                                                                     time spent

and so we could conclude that the rate is 2 acres per hour.

5 0
3 years ago
Read 2 more answers
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