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svlad2 [7]
2 years ago
9

7x +9y for x=-3 and y=2

Mathematics
1 answer:
Rama09 [41]2 years ago
5 0

7x + 9y, \: where \: x =  - 3, \: and \: y = 2 \\

Plugging in our values,

7( - 3) + 9(2)

Evaluating our values,

- 21 + 18 =  - 3

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The participants in a research study self-report their sleep quality levels by choosing the response option that best characteri
Bad White [126]

Answer:

This is a Categorical variable and the measurement scale is ordinal scale.

Step-by-step explanation:

The measurement scale that is being used to classify sleep is the ordinal measurement. In this question, the variable that is called sleep quality is a categorical variable. categorical variables are variables that have the data representing groups. sleep quality has been given this categorical order extremely low very low low and extreme high.

The ordinal scale is a scale that denotes order it has all variables in a specific order.

6 0
2 years ago
Are these all correct?
sladkih [1.3K]
Problem 1) Line n is the line of symmetry (not line o) because we can fold the lower half to match up with the upper half. The folding line is over line n.

Problem 2) I agree. Nice work on getting the correct answer. The folding line is a vertical line through the center

Problem 3) It's hard to say for sure, but I think the top left corner is NOT reflective over any line of symmetry no matter how you rotate it. So I would uncheck that box. I agree with your other choices though. Great job with those. 
4 0
3 years ago
A coat that usually costs $123 is marked 1/3 off.What is the sale price of the coat. Round to the nearest dollar
Brut [27]

Answer:

$82

Step-by-step explanation:

If the coat is 1/3 off then you pay 2/3 of the price. To find a sale price, multiply the cost by 2/3.

123(2/3) = 246/3 = 82

7 0
2 years ago
Mr. Gentry teaches two science classes. There are 28 students in his biology class and 21 students in his environmental science
saveliy_v [14]

Answer:

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Gjqziqgzi1gzva j1vziqvzn1gaigakhixg1z

8 0
2 years ago
Examine the data below for a stalk of corn. Logarithmic regression Use logarithmic regression to find an equation of the form y
masya89 [10]

The value of <em>a</em> and <em>b</em> for the data values of stalk of corn using the logarithmic regression is -76.2038 and 37.6735 respectively.

<h3>What is logarithmic regression?</h3>

Logarithmic regression is a type of regression which is used to model the statement in which the growth or decay initially at rapid rate, and then slow down with respect to time.

The data of the table for the day and height of the stalk of corn is listed below.

Day (<em>x</em>)                9    12    22    40    

Height (<em>y</em>) in        5    17    45    60  

Mean of x values,

m_x=\dfrac{9+12+22+40}{4}\\m_x=17.5581

Mean of y values,

m_y=\dfrac{5+17+45+60}{4}\\m_y=31.75

For the above table, the value of correlation coefficient is 0.99133. For these values, the logarithmic regression can be given as,

y = -76.2038+37.6735\ln(x)

Compare it with the following logarithmic regression equation, we get

y = a+b\ln(x)

a=-76.2038\\b=37.6735

Hence, the value of <em>a</em> and <em>b</em> for the data values of stalk of corn using the logarithmic regression is -76.2038 and 37.6735 respectively.

Learn more about the logarithmic regression here;

brainly.com/question/25226042

5 0
2 years ago
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