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MakcuM [25]
3 years ago
13

Evaluate the expression below for x =4 and y = 5.

Mathematics
1 answer:
Ivanshal [37]3 years ago
3 0

Answer:

positive 35

Step-by-step explanation:

x2 + 3(x + y)        given

4(2) + 3(4+5)         problem

4(2) + 3(9)

8 + 27= 35

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A collection of numerical information, such as the scores on a test, is referred to as simple random sampling.True / False.
Nimfa-mama [501]

Answer:

False. See explanation below.

Step-by-step explanation:

False

A simple random sample "is a subset of a statistical population in which each member of the subset has an equal probability of being chosen"

In other words that means in order to apply a random sampling we need to ensure that we have the same probability of inclusion for every possible element of the population of interest.

And for this case a collection of any numerical information is not referred as random sampling since we don't know if these scores are representative of the population of interest.

And we don't know if this information is obtained using any sampling frame or sampling methodology.  

8 0
3 years ago
Write the equation of a line that is parallel to y=0.6x+3 and that passes through the point
a_sh-v [17]
A line parallel to y = 0.6x + 3 will be of the form:

y = 0.6x + k

where k is a constant.

It passes through (-3,-5)

Thus,

y = 0.6x + k \\ \\ -5 = 0.6 \times (-3) + k \\ \\ -5 = -1.8 + k \\ \\k = -5 + 1.8 \\ \\ k = -3.2

\textbf{The equation is \: \: y = 0.6x - 3.2}
3 0
3 years ago
The following table shows values from a linear function. What is the
Naddik [55]

Answer:

9

Step-by-step explanation:

The equation graphed from these points is y=3x+9, therefore the y-intercept is 9.

4 0
3 years ago
The amount of a 500 g sample of a radioactive substance that remains over time is given by the equation , where d is the number
Vlada [557]
Non-linear

The line should be an exponential function, as it halves in mass every time a certain amount of time has passed.
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3 years ago
I have 10 apples, I give away 2, how many apples do I have left
Volgvan
This would be 10-2 which would equal 8
5 0
3 years ago
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