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olasank [31]
3 years ago
5

Solve using substitution. 3x + 8y = 19 y = 2 ( , )

Mathematics
2 answers:
Kobotan [32]3 years ago
8 0
X=1, (1,2) is the answer
satela [25.4K]3 years ago
4 0
3x + 8(2) = 19, 3x + 16= 19 , 3x=3 , x =1
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Compare and contrast exponential and linear functions using both graphs and tables. How would you determine if a function is lin
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3 years ago
What is the value of this expression when m=3 and n=-5 (6m^-1n^0)^-3
Mandarinka [93]
This is

(6(3)^-1 (-5)^0)^-3

=  (6/3 * 1)^-3

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= 1/8  Answer
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3 years ago
Read 2 more answers
Find the slope of the line through the given points.<br> (-2,7) and (2,-5)
Andreyy89

Answer:

y = -3x + 1

Step-by-step explanation:

hope this is right!

4 0
3 years ago
Or a very large set of data the measured mean is found to be 288.6 with a standard deviation of 21.2. assuming the data to be no
SashulF [63]

The 68-95-99.7 rule tells us 68% of the probability is between -1 standard deviation and +1 standard deviation from the mean. So we expect 75% corresponds to slightly more than 1 standard deviation.

Usually the unit normal tables don't report the area between -σ and σ but instead a cumulative probability, the area between -∞ and σ. 75% corresponds to 37.5% in each half so a cumulative probability of 50%+37.5%=87.5%. We look that up in the normal table and get σ=1.15.

So we expect 75% of normally distributed data to fall within μ-1.15σ and μ+1.15σ

That's 288.6 - 1.15(21.2) to 288.6 + 1.15(21.2)

Answer: 264.22 to 312.98


8 0
3 years ago
What is the distance between (-5, 5) and (1, -2)
Murrr4er [49]

Answer:

\displaystyle d=\sqrt{85}\text{, or about 9.22 units}

Step-by-step explanation:

          We will use the distance formula to solve.

\displaystyle d=\sqrt{(x_{2}-x_{1})^2 +(y_{2}-y_{1})^2}

\displaystyle d=\sqrt{(1--5)^2 +(-2-5)^2}

\displaystyle d=\sqrt{(6)^2 +(-7)^2}

\displaystyle d=\sqrt{36+49}

\displaystyle d=\sqrt{85}\text{, or about 9.22 units}

<em>Read more about using the </em><em>distance formula</em><em> here: brainly.com/question/15691280</em>

6 0
1 year ago
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