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Komok [63]
3 years ago
14

| 18 - (-13) | it’s subtracting integers

Mathematics
1 answer:
Anna35 [415]3 years ago
7 0
Answer: 31

How: If there are two negative signs like this, you would connect them together and make it into a addition sign where you then can add them.
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Find the domain of the function. Express the exact answer using interval notation.
Naya [18.7K]

Answer:

(-oo, -8/3) U (-8/3, oo)

Step-by-step explanation:

Hope this helps.

8 0
2 years ago
Please help me online school isnt fit for me lol
worty [1.4K]

Answer:

The answer is A!!

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
A researcher studying reaction time of drivers states that, "A 95% confidence interval for the mean time it takes for a driver t
torisob [31]

Answer:

The answer to the question is

Point Estimate = 1.5

Margin of error = 0.3

Step-by-step explanation:

A point estimate as opposed to an interval estimate, presented in the question which consist of a range of values, is a specific point or single value to describe a given set of collected data. An example of a point estimate is the mean of a range of values hence the point estimate is given as

(1.2 + 1.8) ÷ 2 which is equal to 1.5

The margin of error is used to describe the required allowance in terms of statistical points or percentage points by which a given set of result could vary from the actual sample. It represents the expected error between the actual population and the survey result

In this case the margin of error from the mean  is

1.5 - 1.2 = 0.3

Margin of error formula is z ×σ/√(n)

where z = z-score

σ = standard deviation

n = number of sampled data

4 0
3 years ago
If x, y, and z are positive integers such that xyz+30xy+21xz+2yz+105x+10y+7z=812, find x+y+z.
Ket [755]

Answer:

x= 2, y= 2, and z= 6

Step-by-step explanation:

If this is a Diophantine equation, add 35 to both sides and factor the left:

(3x+1)(2y+7)(z+5) = 847 = 7 times 112

Each integer factorization of 847 into 3 factors leads to a different number/value of x, y, and z. If the first factor, (3x+1), is 1 more than a multiple of 3, and the second factor, (2y+7), is odd, then x, y, and z will be integers.

For example:

847 = 121 times -7 times -1 gives (x, y, z) = (40, -7, -6) because 121 times -7 times -1 is 847 as well, it checks out.

If x, y, and z need to be positive, then the three numbers/factors need to be greater than 1, 7, and 5. The only combination that works is 7 times 11 times 11, which gives (x, y, z) = (2, 2, 6).

:)

6 0
3 years ago
Find the function p(x) = f(x) × g(x). f(x)=3, g(x)=6x-4
trasher [3.6K]

Answer:

p(x) = 18x - 12

Step-by-step explanation:

given p(x) = f(x) × g(x), then

p(x) = 3(6x - 4 ) ← distribute by 3

p(x) = 18x - 12


6 0
3 years ago
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